grepcent / static financial knowledge base

WESCO INTERNATIONAL INC (WCC)

CIK: 0000929008. SIC: 5063 Wholesale-Electrical Apparatus & Equipment, Wiring Supplies . Latest 10-K as of: 2026-02-13.

SIC breadcrumb: Wholesale Trade > SIC Major Group 50 > SIC 5063 Wholesale-Electrical Apparatus & Equipment, Wiring Supplies

SEC company page: https://www.sec.gov/edgar/browse/?CIK=929008. Latest filing source: 0000929008-26-000008.

Informational only - descriptive public-record data, not investment advice.

Business

Read WCC's verbatim Item 1 Business section from its latest 10-K: Business.

Risk Factors

Read WCC's verbatim Item 1A Risk Factors from its latest 10-K: Risk Factors.

Selected Fundamentals

MetricValueUnitFYFiled
Revenue23,510,900,000USD20252026-02-13
Net income640,200,000USD20252026-02-13
Assets16,494,900,000USD20252026-02-13

Financials

Annual standardized facts from SEC companyfacts as of latest extracted filing date 2026-02-13. Source: https://data.sec.gov/api/xbrl/companyfacts/CIK0000929008.json. Derived margins, ratios, and free cash flow are computed from the extracted annual SEC facts.

Download these verified figures (annual + quarterly, with per-value filing provenance): JSON · CSV

Flow metrics use full-year FY periods from 10-K/10-K/A filings; balance-sheet metrics use FY-end instants. Free cash flow = operating cash flow - capital expenditures. Missing metrics are omitted rather than fabricated.

Metric2016201720182019202020212022202320242025
Revenue7,336,017,0007,679,021,0008,176,601,0008,358,917,00012,325,995,00018,217,500,00021,420,100,00022,385,200,00021,818,800,00023,510,900,000
Net income101,588,000163,460,000227,343,000223,426,000100,560,000465,400,000860,500,000765,500,000717,600,000640,200,000
Operating income330,546,000319,040,000352,440,000346,217,000347,038,000801,900,0001,438,100,0001,406,400,0001,223,200,0001,233,000,000
Diluted EPS2.103.384.825.141.517.8415.3313.5413.0513.05
Operating cash flow300,235,000149,122,000296,721,000224,367,000543,931,00067,100,00011,000,000493,200,0001,101,200,000125,000,000
Capital expenditures17,957,00021,507,00036,210,00044,067,00056,671,00054,700,00099,400,00092,300,00094,700,00099,800,000
Dividends paid0.000.0076,600,00081,500,00088,400,000
Share buybacks4,818,000106,792,000127,169,000150,000,0000.000.0011,100,00075,000,000425,000,00075,000,000
Assets4,431,841,0004,735,468,0004,605,036,0005,017,635,00011,880,214,00012,617,699,00014,811,700,00015,060,900,00015,061,400,00016,494,900,000
Liabilities2,468,210,0002,619,325,0002,475,310,0002,758,964,0008,543,825,0008,841,488,00010,362,100,00010,029,000,00010,095,900,00011,468,500,000
Stockholders' equity1,966,900,0002,119,739,0002,135,310,0002,265,483,0003,343,722,0003,782,524,0004,454,200,0005,037,100,0004,970,700,0005,031,600,000
Free cash flow282,278,000127,615,000260,511,000180,300,000487,260,00012,400,000-88,400,000400,900,0001,006,500,00025,200,000

Ratios

ROE and ROA use period-end equity/assets. Liabilities / equity uses total liabilities divided by stockholders' equity. Current ratio uses current assets divided by current liabilities when both are reported.

Metric2016201720182019202020212022202320242025
Net margin1.38%2.13%2.78%2.67%0.82%2.55%4.02%3.42%3.29%2.72%
Operating margin4.51%4.15%4.31%4.14%2.82%4.40%6.71%6.28%5.61%5.24%
Return on equity5.16%7.71%10.65%9.86%3.01%12.30%19.32%15.20%14.44%12.72%
Return on assets2.29%3.45%4.94%4.45%0.85%3.69%5.81%5.08%4.76%3.88%
Liabilities / equity1.251.241.161.222.562.342.331.992.032.28
Current ratio2.412.312.252.341.842.082.182.482.202.20

Financial Bridges

Waterfall figures reconcile reported SEC companyfacts components. Missing bridges are omitted when required components are not present for the same fiscal year.

Free cash flow = operating cash flow - capital expenditures

WCC FY2025 free cash flow bridge from reported figures.WCC FY2025 free cash flow bridge from reported figures.WCC free cash flow bridgeFY2025: operating cash flow less capital expendituresSource: SEC companyfacts FY2025.Free cash flow bridgeReported amount$0.0B$125.0M$250.0M$125.0MOperating cash flow-$99.8MCapex$25.2MFree cash flow

Figure provenance: SEC companyfacts FY 2025. Operating cash flow: accession 0000929008-26-000008; concept NetCashProvidedByUsedInOperatingActivities; source concepts us-gaap:NetCashProvidedByUsedInOperatingActivities | Capital expenditures: accession 0000929008-26-000008; concept PaymentsToAcquireProductiveAssets; source concepts us-gaap:PaymentsToAcquireProductiveAssets | Free cash flow: accession 0000929008-26-000008; concept NetCashProvidedByUsedInOperatingActivities - PaymentsToAcquireProductiveAssets; source concepts us-gaap:NetCashProvidedByUsedInOperatingActivities; us-gaap:PaymentsToAcquireProductiveAssets

Financial Charts

WCC revenue, last 5 periods. Source: SEC companyfacts FY2025.WCC revenue, last 5 periods. Source: SEC companyfacts FY2025.WCC RevenueLatest point: FY2025 = $23.5BSource: SEC companyfacts FY2025.Fiscal yearReported revenue$0.0B$15.0B$30.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: RevenueFromContractWithCustomerExcludingAssessedTax. Source concepts: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.

WCC net income, last 5 periods. Source: SEC companyfacts FY2025.WCC net income, last 5 periods. Source: SEC companyfacts FY2025.WCC Net incomeLatest point: FY2025 = $640.2MSource: SEC companyfacts FY2025.Fiscal yearNet income$0.0B$500.0M$1.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: NetIncomeLoss. Source concepts: us-gaap:NetIncomeLoss.

WCC operating income, last 5 periods. Source: SEC companyfacts FY2025.WCC operating income, last 5 periods. Source: SEC companyfacts FY2025.WCC Operating incomeLatest point: FY2025 = $1.2BSource: SEC companyfacts FY2025.Fiscal yearOperating income$0.0B$1.0B$2.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: OperatingIncomeLoss. Source concepts: us-gaap:OperatingIncomeLoss.

WCC diluted eps, last 5 periods. Source: SEC companyfacts FY2025.WCC diluted eps, last 5 periods. Source: SEC companyfacts FY2025.WCC Diluted EPSLatest point: FY2025 = $13.05/shareSource: SEC companyfacts FY2025.Fiscal yearDiluted EPS (USD/share)$0.00/share$10.00/share$20.00/shareFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: EarningsPerShareDiluted. Source concepts: us-gaap:EarningsPerShareDiluted.

WCC operating cash flow, last 5 periods. Source: SEC companyfacts FY2025.WCC operating cash flow, last 5 periods. Source: SEC companyfacts FY2025.WCC Operating cash flowLatest point: FY2025 = $125.0MSource: SEC companyfacts FY2025.Fiscal yearOperating cash flow$0.0B$1.0B$2.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: NetCashProvidedByUsedInOperatingActivities. Source concepts: us-gaap:NetCashProvidedByUsedInOperatingActivities.

WCC capital expenditures, last 5 periods. Source: SEC companyfacts FY2025.WCC capital expenditures, last 5 periods. Source: SEC companyfacts FY2025.WCC Capital expendituresLatest point: FY2025 = $99.8MSource: SEC companyfacts FY2025.Fiscal yearCapital expenditures$0.0B$125.0M$250.0MFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: PaymentsToAcquireProductiveAssets. Source concepts: us-gaap:PaymentsToAcquireProductiveAssets.

WCC dividends paid, last 5 periods. Source: SEC companyfacts FY2025.WCC dividends paid, last 5 periods. Source: SEC companyfacts FY2025.WCC Dividends paidLatest point: FY2025 = $88.4MSource: SEC companyfacts FY2025.Fiscal yearDividends paid$0.0B$125.0M$250.0MFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: PaymentsOfDividendsCommonStock. Source concepts: us-gaap:PaymentsOfDividendsCommonStock.

WCC share buybacks, last 5 periods. Source: SEC companyfacts FY2025.WCC share buybacks, last 5 periods. Source: SEC companyfacts FY2025.WCC Share buybacksLatest point: FY2025 = $75.0MSource: SEC companyfacts FY2025.Fiscal yearShare buybacks$0.0B$250.0M$500.0MFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: PaymentsForRepurchaseOfCommonStock. Source concepts: us-gaap:PaymentsForRepurchaseOfCommonStock.

WCC assets, last 5 periods. Source: SEC companyfacts FY2025.WCC assets, last 5 periods. Source: SEC companyfacts FY2025.WCC AssetsLatest point: FY2025 = $16.5BSource: SEC companyfacts FY2025.Fiscal yearAssets$0.0B$10.0B$20.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: Assets. Source concepts: us-gaap:Assets.

WCC liabilities, last 5 periods. Source: SEC companyfacts FY2025.WCC liabilities, last 5 periods. Source: SEC companyfacts FY2025.WCC LiabilitiesLatest point: FY2025 = $11.5BSource: SEC companyfacts FY2025.Fiscal yearLiabilities$0.0B$10.0B$20.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: Liabilities. Source concepts: us-gaap:Liabilities.

WCC stockholders' equity, last 5 periods. Source: SEC companyfacts FY2025.WCC stockholders' equity, last 5 periods. Source: SEC companyfacts FY2025.WCC Stockholders' equityLatest point: FY2025 = $5.0BSource: SEC companyfacts FY2025.Fiscal yearStockholders' equity$0.0B$3.0B$6.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: StockholdersEquity. Source concepts: us-gaap:StockholdersEquity.

WCC free cash flow, last 5 periods. Source: SEC companyfacts FY2025.WCC free cash flow, last 5 periods. Source: SEC companyfacts FY2025.WCC Free cash flowLatest point: FY2025 = $25.2MSource: SEC companyfacts FY2025.Fiscal yearFree cash flow-$250.0M$0.0B$2.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0000929008-26-000008; filed 2026-02-13. Concept: NetCashProvidedByUsedInOperatingActivities - PaymentsToAcquireProductiveAssets. Source concepts: us-gaap:NetCashProvidedByUsedInOperatingActivities; us-gaap:PaymentsToAcquireProductiveAssets.

Quarterly

Quarterly standardized facts from SEC companyfacts as of latest extracted filing date 2026-04-30. Source: https://data.sec.gov/api/xbrl/companyfacts/CIK0000929008.json.

Flow metrics use discrete quarter-length periods from 10-Q/10-Q/A filings. Q4 revenue and net income are derived only when annual FY and nine-month YTD facts exist for the same fiscal year; derived Q4 values are labeled. EPS Q4 is not derived.

QuarterEnd DateRevenueNet IncomeDiluted EPSMethod
2022-Q22022-06-303.95reported discrete quarter
2022-Q32022-09-304.30reported discrete quarter
2023-Q12023-03-313.48reported discrete quarter
2023-Q22023-03-31197,100,000reported discrete quarter
2023-Q22023-06-305,745,500,0003.41reported discrete quarter
2023-Q32023-06-30193,100,000reported discrete quarter
2023-Q32023-09-305,644,400,0004.20reported discrete quarter
2023-Q42023-12-315,473,400,000141,900,000derived Q4 = FY annual - nine-month YTD
2024-Q12024-03-315,350,000,000115,800,0001.95reported discrete quarter
2024-Q22024-03-31115,800,000reported discrete quarter
2024-Q22024-06-305,479,700,0004.28reported discrete quarter
2024-Q32024-06-30232,100,000reported discrete quarter
2024-Q32024-09-305,489,400,0003.81reported discrete quarter
2024-Q42024-12-315,499,700,000165,400,000derived Q4 = FY annual - nine-month YTD
2025-Q12025-03-315,343,700,000118,400,0002.10reported discrete quarter
2025-Q22025-03-31118,400,000reported discrete quarter
2025-Q22025-06-305,899,600,0003.83reported discrete quarter
2025-Q32025-06-30174,500,000reported discrete quarter
2025-Q32025-09-306,199,100,0003.79reported discrete quarter
2025-Q42025-12-316,068,500,000159,900,000derived Q4 = FY annual - nine-month YTD
2026-Q12026-03-316,080,100,000153,800,0003.11reported discrete quarter

Quarterly Charts

WCC quarterly revenue, last 12 periods. Source: SEC companyfacts 2026-Q1.WCC quarterly revenue, last 12 periods. Source: SEC companyfacts 2026-Q1.WCC Quarterly RevenueLatest point: 2026-Q1 = $6.1BSource: SEC companyfacts 2026-Q1.Fiscal quarterQuarterly Revenue$0.0B$4.0B$8.0B2023-Q22023-Q32023-Q42024-Q12024-Q22024-Q32024-Q42025-Q12025-Q22025-Q32025-Q42026-Q1

Figure provenance: SEC companyfacts. Latest point: FY 2026 ended 2026-03-31; accession 0000929008-26-000014; filed 2026-04-30. Concept: RevenueFromContractWithCustomerExcludingAssessedTax. Source concepts: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.

WCC quarterly net income, last 12 periods. Source: SEC companyfacts 2026-Q1.WCC quarterly net income, last 12 periods. Source: SEC companyfacts 2026-Q1.WCC Quarterly Net incomeLatest point: 2026-Q1 = $153.8MSource: SEC companyfacts 2026-Q1.Fiscal quarterQuarterly Net income$0.0B$125.0M$250.0M2023-Q22023-Q32023-Q42024-Q12024-Q22024-Q32024-Q42025-Q12025-Q22025-Q32025-Q42026-Q1

Figure provenance: SEC companyfacts. Latest point: FY 2026 ended 2026-03-31; accession 0000929008-26-000014; filed 2026-04-30. Concept: NetIncomeLoss. Source concepts: us-gaap:NetIncomeLoss.

WCC quarterly diluted eps, last 12 periods. Source: SEC companyfacts 2026-Q1.WCC quarterly diluted eps, last 12 periods. Source: SEC companyfacts 2026-Q1.WCC Quarterly Diluted EPSLatest point: 2026-Q1 = $3.11/shareSource: SEC companyfacts 2026-Q1.Fiscal quarterQuarterly Diluted EPS (USD/share)$0.00/share$3.00/share$6.00/share2022-Q22022-Q32023-Q12023-Q22023-Q32024-Q12024-Q22024-Q32025-Q12025-Q22025-Q32026-Q1

Figure provenance: SEC companyfacts. Latest point: FY 2026 ended 2026-03-31; accession 0000929008-26-000014; filed 2026-04-30. Concept: EarningsPerShareDiluted. Source concepts: us-gaap:EarningsPerShareDiluted.

Macro Cross-References

Latest quarter (10-Q)

Latest 10-Q source: 0000929008-26-000014.

Extracted structurally from real Item 2 body heading to real Item 3/4 boundary. Confidence: high. Filing date: 2026-04-30. Report date: 2026-03-31.

Item 2.    Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the unaudited condensed consolidated financial statements and notes thereto included in Item 1 of this Quarterly Report on Form 10-Q and WESCO International, Inc.’s audited Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations included in its Annual Report on Form 10-K for the fiscal year ended December 31, 2025. The matters discussed herein may contain forward-looking statements that are subject to certain risks and uncertainties that could cause actual results to differ materially from expectations. Certain of these risks are set forth in Item 1A of WESCO International, Inc.’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, as well as WESCO International, Inc.’s other reports filed with the Securities and Exchange Commission. In this Item 2, “Wesco” refers to WESCO International, Inc., and its subsidiaries and its predecessors unless the context otherwise requires. References to “we,” “us,” “our” and the “Company” refer to Wesco and its subsidiaries.

In addition to the results provided in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), our discussion and analysis of financial condition and results of operations includes certain non-GAAP financial measures, which are defined further below. These financial measures include Organic sales growth, Earnings before interest, taxes, depreciation and amortization (“EBITDA”), Adjusted EBITDA, Adjusted EBITDA margin, Financial leverage, Adjusted selling, general and administrative expenses, Adjusted income from operations, Adjusted other non-operating (income) expense, Adjusted provision for income taxes, Adjusted income before income taxes, Adjusted net income, Adjusted net income attributable to WESCO International, Inc., Adjusted net income attributable to common stockholders, and Adjusted earnings per diluted share. We believe that these non-GAAP measures are helpful to users of our financial statements as they provide a better understanding of our financial condition and results of operations on a comparable basis. Additionally, certain non-GAAP measures either focus on or exclude items impacting comparability of results, allowing users to more easily compare our financial performance from period to period. Management uses certain non-GAAP financial measures in its evaluation of the performance of the Company’s operating segments and in the determination of incentive compensation. Management does not use these non-GAAP financial measures for any purpose other than the reasons stated above.

Company Overview

Wesco, headquartered in Pittsburgh, Pennsylvania, is a leading provider of business-to-business distribution, logistics services and supply chain solutions.

We employ approximately 21,000 people, maintain relationships with more than 35,000 suppliers, and serve nearly 130,000 customers worldwide. With millions of products, end-to-end supply chain services and significant digital capabilities, Wesco provides innovative solutions to meet customer needs across commercial and industrial businesses, technology companies, telecommunications providers, and utilities. Our innovative solutions include supply chain management, logistics and transportation, procurement, warehousing and inventory management, as well as kitting and labeling, limited assembly of products and installation enhancement. We operate more than 700 sites, including distribution centers, fulfillment centers and sales offices in approximately 50 countries, providing a local presence for customers and a global network to serve multi-location businesses and global corporations.

We have operating segments comprising three strategic business units: Electrical & Electronic Solutions (“EES”), Communications & Security Solutions (“CSS”) and Utility & Broadband Solutions (“UBS”). These operating segments are equivalent to our reportable segments. The following is a description of each of our reportable segments and their business activities.

Electrical & Electronic Solutions

The EES segment, serving customers in over 50 countries, is a North American leader, and supplies a broad range of products and solutions primarily to construction, industrial and original equipment manufacturer (“OEM”) customers. The EES product portfolio includes a broad range of electrical equipment and supplies, automation and connected devices (the “Internet of Things” or “IoT”), security, lighting, wire and cable, safety, and maintenance, repair and operating (“MRO”) products from industry-leading manufacturing partners. The EES service portfolio includes solutions to improve project execution, direct and indirect manufacturing supply chain optimization programs, lighting and renewables advisory services, and digital and automation solutions to improve safety and productivity.

21

Table of Contents

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

Communications & Security Solutions

The CSS segment, serving customers in over 50 countries, is a global leader in data center, network infrastructure and security solutions. CSS sells directly to end-users or through an extensive network of channel partners, including data communications contractors, security and network integrators, professional audio/visual integrators, and systems integrators. CSS also provides a wide range of professional A/V, safety, facilities, and energy management solutions. The full CSS product portfolio is frequently coupled with services designed to enhance efficiency and productivity across all customer segments globally. These services include data center services, advisory, installation enhancement, project deployment, supply chain solutions, and management platforms.

Utility & Broadband Solutions

The UBS segment is a leader in North America, serving customers primarily in the U.S. and Canada, and provides products and services to investor-owned utilities, electric power cooperatives and municipalities, as well as global service providers, wireless providers, broadband operators and the contractors that service these customers. The products sold include wire and cable, transformers, transmission and distribution hardware, switches, protective devices, connectors, lighting, conduit, fiber and copper cable, connectivity products, pole line hardware, racks, cabinets, safety and MRO products, and point-to-point wireless devices. UBS also offers a complete set of service solutions to improve customer supply chain efficiencies.

Business Highlights

Our financial results reflect continued sales momentum in the first quarter of 2026, highlighted by a 13.8% year over year increase in reported Net sales driven by volume growth across all three segments. For the first quarter of 2026 compared to the first quarter of 2025, organic sales increased by 12.3%, which adjusts for fluctuations in foreign exchange rates. Our CSS segment data center solutions business is primarily driving this growth in sales. Our EES segment experienced continued growth and improved gross margin across its construction and OEM businesses, fueled in part by strong wire and cable demand, as well as continued demand for data center projects and increased infrastructure activity. Our UBS segment also delivered sales growth, driven by year-over-year increases in its utility business from investor-owned utility sales and continued momentum in grid services, along with growth in the United States broadband business. Our UBS segment experienced lower gross margin primarily driven by public power utility customers. We also saw record year-over-year backlog growth driven by our CSS and EES segments.

During the first quarter of 2026, we issued 5.250% Senior Notes due 2031 (the “2031 Notes”) and 5.500% Senior Notes due 2034 (the “2034 Notes” and, together with the 2031 Notes, the “2031 and 2034 Notes”) in part to support the planned redemption of our 7.250% senior notes due 2028 (the “2028 Notes”) in June 2026. Following the redemption of the 2028 Notes, we will have no significant debt maturities until 2029. We expect this redemption to create substantial net income, earnings per share, and cash flow benefit.

We are monitoring and evaluating the potential effects of the February 20, 2026 U.S. Supreme Court ruling that invalidated tariffs imposed under the International Emergency Economic Powers Act (“IEEPA”); however, due to uncertainty regarding the availability and timing of any potential refunds, we have not recorded any related amounts as of March 31, 2026.

We continued to execute on our multi-year, phased development and implementation of a new Digital and Data Platform (“DDP”). The DDP is intended to be a unified, technology-enabled operating model that spans all business functions, maintains and enhances the flow of financial information, and improves resource efficiency.

Taking the above highlights into consideration, we believe we are well positioned to benefit from enduring secular growth trends of AI-driven data centers, increased power generation, electrification, automation and reshoring.

22

Table of Contents

WESCO INTERNATIONAL, INC. AND SUBSIDIARIES

Results of Operations

First Quarter of 2026 versus First Quarter of 2025

Net Sales

The following table sets forth Net sales and organic sales growth for the periods presented:

Three Months EndedGrowth/(Decline)
March 31, 2026March 31, 2025Reported SalesAcquisitionForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$6,080.1$5,343.713.8%%1.5%%12.3%

Note: Organic sales growth is a non-GAAP financial measure of sales performance. Organic sales growth is calculated by deducting the percentage impact from acquisitions and divestitures for one year following the respective transaction, fluctuations in foreign exchange rates and number of workdays from the reported percentage change in consolidated Net sales. Workday impact represents the change in the number of operating days period-over-period after adjusting for weekends and public holidays in the United States; there was no change in the number of workdays in the first quarter of 2026 compared to the first quarter of 2025.

Net sales were $6.1 billion for the first quarter of 2026 compared to $5.3 billion for the first quarter of 2025, an increase of 13.8%. Organic sales for the first quarter of 2026 grew by 12.3%. This growth reflects an approximate 9% increase in volume driven by all three segments (CSS, EES and UBS), and an approximate 3% benefit from price.

Cost of Goods Sold

Cost of goods sold for the first quarter of 2026 was $4.8 billion compared to $4.2 billion for the first quarter of 2025, an increase of 13.5%. Cost of goods sold as a percentage of Net sales was 78.8% and 78.9% for the first quarter of 2026 and 2025, respectively. The favorable impact reflects improved gross margin in the EES segment partially offset by a decline in the UBS segment and to a lesser extent, the CSS segment.

Selling, General and Administrative Expenses

Selling, general and administrative (“SG&A”) expenses for the first quarter of 2026 totaled $947.6 million versus $836.3 million for the first quarter of 2025, an increase of $111.3 million, or 13.3%.

The following table reconciles SG&A expenses to Adjusted SG&A expenses, which is a non-GAAP financial measure, for the periods presented:

[[GREPCENT_TABLE]]
[["","Three Months Ended"],["","March 31, 2026","% of Net sales","March 31, 2025","% of Net sales"],["Adjusted SG&A Expenses:","(In millions)"],["SG&A expenses","$","947.6","15.6%","$","836.3","15.7%"],["Digital transformation costs(1)","(17.5)","","(

[Excerpt truncated for page length; source filing is linked above.]

Latest 10-K MD&A

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2026-02-13. Report date: 2025-12-31.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the audited consolidated financial statements and notes thereto included in Item 8 of this Annual Report on Form 10-K. The matters discussed herein may contain forward-looking statements that are subject to certain risks and uncertainties that could cause actual results to differ materially from expectations. Certain of these risks are set forth in Item 1A of this Annual Report on Form 10-K. In this Item 7, “Wesco” refers to WESCO International, Inc., and its subsidiaries and its predecessors unless the context otherwise requires. References to “we,” “us,” “our” and the “Company” refer to Wesco and its subsidiaries.

In addition to the results provided in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), our discussion and analysis of financial condition and results of operations includes certain non-GAAP financial measures, which are defined further below. These financial measures include organic sales growth, earnings before interest, taxes, depreciation and amortization (“EBITDA”), adjusted EBITDA, adjusted EBITDA margin, financial leverage, adjusted selling, general and administrative expenses, adjusted income from operations, adjusted other non-operating expense (income), adjusted provision for income taxes, adjusted income before income taxes, adjusted net income, adjusted net income attributable to WESCO International, Inc., adjusted net income attributable to common stockholders, and adjusted earnings per diluted share. We believe that these non-GAAP measures are helpful to users of our financial statements as they provide a better understanding of our financial condition and results of operations on a comparable basis. Additionally, certain non-GAAP measures either focus on or exclude items impacting comparability of results, allowing users to more easily compare our financial performance from period to period. Management uses certain non-GAAP financial measures in its evaluation of the performance of the Company’s operating segments and in the determination of incentive compensation. Management does not use these non-GAAP financial measures for any purpose other than the reasons stated above.

Company Overview

Wesco, headquartered in Pittsburgh, Pennsylvania, is a leading provider of business-to-business distribution, logistics services and supply chain solutions.

We employ approximately 21,000 people, maintain relationships with more than 35,000 suppliers, and serve nearly 130,000 customers worldwide. With millions of products, end-to-end supply chain services, and significant digital capabilities, Wesco provides innovative solutions to meet customer needs across commercial and industrial businesses, technology companies, telecommunications providers, and utilities. Our innovative solutions include supply chain management, logistics and transportation, procurement, warehousing and inventory management, as well as kitting and labeling, limited assembly of products and installation enhancement. We operate more than 700 sites, including distribution centers, fulfillment centers and sales offices, in approximately 50 countries, providing a local presence for customers and a global network to serve multi-location businesses and global corporations.

We have operating segments comprising three strategic business units: Electrical & Electronic Solutions (“EES”), Communications & Security Solutions (“CSS”) and Utility & Broadband Solutions (“UBS”). These operating segments are equivalent to our reportable segments. See Item 1, “Business” in this Annual Report on Form 10-K for a description of each of our reportable segments and their business activities.

Business Highlights

Our financial results reflect strong sales in 2025, highlighted by a 7.8% year-over-year increase in reported net sales. Organic sales increased by 8.6% year over year, which adjusts for the impact of acquisitions and divestitures, fluctuations in foreign exchange rates and number of workdays. Our CSS data center business is primarily driving this growth in sales, but also contributing to lower gross margins as compared to the prior year due to several large project sales. Our EES segment experienced continued growth across its Original Equipment Manufacturer (“OEM”) and construction businesses, fueled in part by rising demand for data center projects and increased infrastructure activity. Within the UBS segment, our Utility business experienced a year-over-year sales decline driven by reduced public power activity, while our Broadband business delivered year-over-year growth supported by continued network investments. We have also seen year-over-year backlog growth driven primarily by our CSS and UBS segments, with our EES segment contributing as well.

We continued to address supplier price increases in response, in part, to global tariffs, including but not limited to, passing through price increases, leveraging scale to provide locally sourced products, reducing imports from high tariff countries, optimizing supply chain logistics, and re-engineering our global supply chain. Although the long-term impact remains uncertain, tariffs did not have a material effect on our financial results for 2025.

After redeeming our Series A Preferred Stock in June 2025, we have no significant debt maturities until 2028 and have strong liquidity to execute our capital allocation priorities of debt reduction, stock buybacks and acquisitions.

29

Table of Contents

During 2025, we continued to execute on our multi-year, phased development and implementation of a new Digital and Data Platform (“DDP”). The DDP is intended to be a unified, technology-enabled operating model that spans all business functions, maintains and enhances the flow of financial information, and improves resource efficiency.

Taking the above highlights into consideration, we believe we are well positioned to benefit from enduring secular growth trends of AI-driven data centers, increased power generation, and supply chain re-shoring.

Critical Accounting Estimates

Our discussion and analysis of our financial condition and results of operations is based upon our consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates that involve a significant level of estimation uncertainty and have had or are reasonably likely to have a material impact on the financial condition or results of operations, including those related to goodwill and indefinite-lived intangible assets and income taxes. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. If actual market conditions are less favorable than those projected by management, additional adjustments to reserve items may be required. We believe the following accounting estimates are the most critical to the understanding of our consolidated financial statements as they require subjective or complex judgments by management.

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and indefinite-lived intangible assets are tested for impairment annually as of October 1, or more frequently if triggering events occur, indicating that their carrying values may not be recoverable. We test for goodwill impairment on a reporting unit level. We have the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset is less than its carrying value as a basis for determining whether it is necessary to perform quantitative impairment tests. When performing a qualitative assessment we consider several factors, including macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, other relevant events such as changes in key personnel, changes in the composition or carrying amount of the net assets of a reporting unit, and changes in share price.

We will perform a quantitative impairment test if we bypass the qualitative assessment, or if based on the qualitative assessment, it is more likely than not that the fair value of each reporting unit or indefinite-lived intangible asset is less than the carrying amount. For the year ended December 31, 2025, we performed annual impairment tests of goodwill and indefinite-lived intangible assets during the fourth quarter of 2025 by assessing the above-mentioned qualitative factors. As a result of these assessments, we determined that it was more likely than not that the fair values of our reporting units and indefinite-lived intangible assets continued to exceed their respective carrying amounts and, therefore, a quantitative impairment test was not necessary.

As it pertains to a quantitative impairment test, the determination of fair value involves significant management judgment, particularly as it relates to the underlying assumptions and factors around future expected revenues, operating margins and discount rate. This involves performing sensitivity analyses around certain of these assumptions in order to assess the reasonableness of the assumptions and resulting estimated fair values. Management applies its best judgment when assessing the reasonableness of financial projections. Fair values are sensitive to changes in underlying assumptions and factors, and as a result there can be no assurance that the estimates and assumptions made for purposes of the annual goodwill and indefinite-lived intangible assets impairment tests will prove to be an accurate prediction of future results.

See Note 2, “Accounting Policies” and Note 6, “Goodwill and Intangible Assets” of our Notes to Consolidated Financial Statements for additional disclosure regarding goodwill and indefinite-lived intangible assets.

Income Taxes

We recognize deferred tax assets consistent with amounts expected to be realized. To make such determination, management evaluates all positive and negative evidence, including but not limited to, prior, current and future taxable income, tax planning strategies and future reversals of existing taxable temporary differences. A valuation allowance is recognized if it is “more-likely-than-not” that some or all of a deferred tax asset will not be realized. We regularly assess the realizability of deferred tax assets.

We account for uncertainty in income taxes using a “more-likely-than-not” recognition threshold. Due to the subjectivity inherent in the evaluation of uncertain tax positions, the tax benefit ultimately recognized may materially differ from the estimate recognized in the consolidated financial statements. We recognize interest and penalties related to uncertain tax benefits as part of interest expense and income tax expense, respectively.

30

Table of Contents

See Note 2, “Accounting Policies” and Note 11, “Income Taxes” of our Notes to Consolidated Financial Statements for additional disclosure regarding income taxes.

Results of Operations

2025 Compared to 2024

Net Sales

The following table sets forth net sales and organic sales growth for the periods presented:

Year Ended December 31,Growth/(Decline)
20252024Reported SalesAcquisition/DivestitureForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$23,510.9$21,818.87.8%(0.2)%(0.2)%(0.4)%8.6%

Note: Organic sales growth is a non-GAAP financial measure of sales performance. Organic sales growth is calculated by deducting the percentage impact from acquisitions and divestitures for one year following the respective transaction, fluctuations in foreign exchange rates and number of workdays from the reported percentage change in consolidated net sales. Workday impact represents the change in the number of operating days period-over-period after adjusting for weekends and public holidays in the United States; 2025 had one less workday compared to 2024.

Net sales were $23.5 billion for 2025 compared to $21.8 billion for 2024, an increase of 7.8%. Organic sales for 2025 grew by 8.6%. This growth reflects an approximate 6% increase in volume driven by the CSS and EES segments, and an approximate 2% benefit from price.

Cost of Goods Sold

Cost of goods sold for 2025 was $18.5 billion compared to $17.1 billion for 2024, an increase of $1.4 billion. Cost of goods sold as a percentage of net sales was 78.9% and 78.4% for 2025 and 2024, respectively. The unfavorable increase of 50 basis points primarily reflects a decrease in gross margin across all three segments, most significantly in the UBS segment primarily due to competitive pressures in the public power market, as well as in the EES and CSS segments driven by large project sales.

Selling, General and Administrative (“SG&A”) Expenses

SG&A expenses for 2025 totaled $3.5 billion versus $3.3 billion for 2024, an increase of 7.1%.

The following table reconciles SG&A expenses to adjusted SG&A expenses, which is a non-GAAP financial measure, for the periods presented:

Year Ended December 31,
2025% of net sales2024% of net sales
Adjusted SG&A Expenses:(In millions)
SG&A expenses$3,541.415.1%$3,306.215.2%
Digital transformation costs(1)(35.2)(24.9)
Restructuring costs(2)(12.1)
Loss on abandonment of assets(3)(17.8)
Excise taxes on excess pension plan assets(4)(4.9)
Adjusted SG&A expenses$3,506.214.9%$3,246.514.9%

(1)    Digital transformation costs include costs associated with certain digital transformation initiatives.

(2)    Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

(3)    Loss on abandonment of assets represents the write-off of certain capitalized cloud computing arrangement implementation costs relating to a third-party developed operations management software product in favor of an application with functionality that better suits the Company’s operations.

(4)    Excise taxes on excess pension plan assets represent the excise taxes applicable to the excess pension plan assets following the final settlement of the Company's U.S. pension plan.

31

Table of Contents

SG&A payroll and payroll-related expenses for 2025 of $2,193.7 million increased by $144.2 million compared to 2024, primarily as a result of increased salaries of $69.8 million due to wage inflation and increased commissions and incentives of $42.2 million, partially offset by the impact of the divestiture of the WIS business.

SG&A expenses not related to payroll and payroll-related costs for 2025 were $1,347.7 million, an increase of $91.0 million compared to 2024, which primarily reflects increased costs to operate our facilities of $32.8 million, increased transportation costs of $32.1 million, and higher IT costs of $24.8 million.

Depreciation and Amortization

Depreciation and amortization for 2025 was $197.6 million compared to $183.2 million for 2024, an increase of $14.4 million. The increase was primarily driven by depreciation related to IT asset additions placed into service during 2025.

Interest Expense, net

Net interest expense totaled $386.7 million for 2025 compared to $364.9 million for 2024. The increase of $21.8 million, or 6.0%, was primarily driven by the issuance of the 6.375% Senior Notes due 2033 (the “2033 Notes”) and an increase in expense from adjustments for uncertain tax positions, partially offset by lower borrowings and lower interest rates on the Revolving Credit Facility throughout 2025 compared to 2024.

Other Income, net

Other non-operating income totaled $9.6 million for 2025 compared to $92.7 million for 2024. The year ended December 31, 2024 included a $122.2 million gain on the sale of our WIS business. We recognized $4.5 million of income in 2025 from adjustments to the fair value of the contingent consideration liability related to a recent acquisition. Due to fluctuations in the U.S. dollar against certain foreign currencies, we recognized a net foreign currency exchange loss of $0.3 million for 2025 compared to a net loss of $25.5 million for 2024. We recognized net benefits of $3.3 million and net costs of $1.6 million associated with the non-service cost components of net periodic pension cost (benefit) for 2025 and 2024, respectively. The year-over-year decrease in net periodic pension cost was due to the settlement of the Anixter Inc. Pension Plan in the first quarter of 2024.

The following table reconciles other non-operating income to adjusted other non-operating (income) expense, which is a non-GAAP financial measure, for the periods presented:

Year Ended December 31,
20252024
Adjusted Other (Income) Expense, net:(In millions)
Other income, net$(9.6)$(92.7)
Loss on termination of business arrangement(1)(0.3)(3.6)
Pension settlement cost(2)(2.5)
Gain on divestiture122.2
Adjusted other (income) expense, net$(9.9)$23.4

(1)    Loss on termination of business arrangement represents the loss recognized as a result of management's decision to terminate a business arrangement with a third party.

(2)    Pension settlement cost represents expense related to the final settlement of the Company's U.S. pension plan.

Income Taxes

The provision for income taxes was $213.4 million for 2025 compared to $231.6 million for 2024, resulting in effective tax rates of 24.9% and 24.4%, respectively.

Net Income and Earnings per Share

Net income and earnings per diluted share attributable to common stockholders were $645.8 million and $13.05, respectively, for 2025 compared to $660.2 million and $13.05, respectively, for 2024. Adjusted for the non-GAAP adjustments above and the related income tax effects, and the $32.9 million gain recognized as a result of the Company's redemption of its outstanding Series A Preferred Stock, net income and earnings per diluted share attributable to common stockholders were $638.9 million and $12.91, respectively, for the year ended December 31, 2025 and $618.6 million and $12.23, respectively, for the year ended December 31, 2024.

32

Table of Contents

The increase in adjusted earnings per diluted share primarily reflects the favorable impact of the June 2025 Series A Preferred Stock redemption and the corresponding decrease in preferred dividends. Additionally, there was a positive impact from the reduction in outstanding common shares during the year ended December 31, 2025 as compared to the year ended December 31, 2024.

Adjusted EBITDA

Adjusted EBITDA, a non-GAAP financial measure, was $1,536.5 million for 2025 compared to $1,509.1 million for 2024, an increase of $27.4 million, or 1.8% year-over-year. The increase primarily reflects an increase in net sales, partially offset by an increase in cost of goods sold and an increase in SG&A expenses, as described above. The year ended December 31, 2024 included $17.8 million in SG&A expenses from loss on abandonment of assets and $4.9 million in excise taxes on excess pension plan assets. There was also a decrease in restructuring costs of $12.1 million in 2025, partially offset by a $10.3 million increase in digital transformation costs.

Segment Results

The following is a discussion of the financial results of our operating segments comprising three strategic business units consisting of EES, CSS and UBS for the year ended December 31, 2025. As further described below and in Note 16, “Business Segments” of our Notes to Consolidated Financial Statements, the Chief Operating Decision Maker (the “CODM”) allocates resources and evaluates the performance of the Company’s reportable segments based on adjusted EBITDA, which is the Company’s measure of segment profit or loss. Adjusted EBITDA and adjusted EBITDA margin percentage are non-GAAP financial measures. As discussed in Note 2, “Accounting Policies,” the reportable segment information for the year ended December 31, 2024 for the EES and CSS reportable segments has been recast to conform to the current year presentation.

Electrical & Electronic Solutions

Year Ended December 31,Growth/(Decline)
20252024Reported SalesAcquisitionForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$8,955.5$8,391.76.7%%(0.4)%(0.4)%7.5%
Adjusted EBITDA$717.6$699.8
Adjusted EBITDA margin %8.0%8.3%

EES reported net sales of $9.0 billion for 2025 compared to $8.4 billion for 2024, an increase of $563.8 million, or 6.7%. EES organic sales for 2025 grew by 7.5%, driven primarily by volume growth of approximately 4%, primarily as a result of growth in the OEM and construction businesses, and by the impact of changes in price, which favorably impacted organic sales by approximately 4%.

EES adjusted EBITDA increased $17.8 million, or 2.5% year-over-year. The increase primarily reflects an increase in volume and price, as described above. The decrease in adjusted EBITDA margin is attributable to an unfavorable change in product mix. Additionally, SG&A expenses increased $69.7 million as compared to the prior year, which was primarily attributed to increased salaries of $24.4 million, increased commissions and incentives of $15.0 million, increased transportation costs of $11.7 million, and increased operations expenses of $9.2 million.

Communications & Security Solutions

Year Ended December 31,Growth/(Decline)
20252024Reported SalesAcquisitionForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$9,101.0$7,692.118.3%1.9%0.1%(0.4)%16.7%
Adjusted EBITDA$799.4$638.8
Adjusted EBITDA margin %8.8%8.3%

CSS reported net sales of $9.1 billion for 2025 compared to $7.7 billion for 2024, an increase of $1.4 billion, or 18.3%, which is inclusive of a favorable impact from the acquisition of Ascent of 1.9%. CSS organic sales for 2025 grew by 16.7%, driven primarily by volume growth of approximately 15% as a result of the data center solutions business, and to a lesser extent, growth in the security solutions business, and by the impact of changes in price, which favorably impacted organic sales by approximately 1%.

33

Table of Contents

CSS adjusted EBITDA increased $160.6 million, or 25.1% year-over-year. The increase reflects an increase in volume, specifically within the data center solutions business and the security solutions business, as described above. Further, there was an increase in SG&A expenses of $97.2 million. The increase in SG&A expenses is primarily attributed to increased salaries of $28.7 million, increased transportation costs of $25.7 million consistent with higher sales, increased commissions and incentives of $17.8 million, increased operations expenses of $11.9 million, and increased benefits expense of $11.5 million.

Utility & Broadband Solutions

Year Ended December 31,Growth/(Decline)
20252024Reported SalesDivestitureForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$5,454.4$5,735.0(4.9)%(3.3)%(0.2)%(0.4)%(1.0)%
Adjusted EBITDA$562.8$643.4
Adjusted EBITDA margin %10.3%11.2%

UBS reported net sales of $5.5 billion for 2025 compared to $5.7 billion for 2024, a decrease of $280.6 million or 4.9%, which is inclusive of an unfavorable impact from the divestiture of the WIS business of 3.3%. UBS organic sales for 2025 declined by 1.0%, reflecting volume declines in the Utility business primarily as a result of reduced public power activity. The decline was partially offset by growth in the Broadband business from continued network investments. Changes in price did not have a material impact on the year-over-year decline in UBS organic sales.

UBS adjusted EBITDA decreased $80.6 million, or 12.5% year-over-year. The decrease primarily reflects a decline in volume, as described above. The decrease in adjusted EBITDA was partially offset by a decrease in SG&A expenses of $8.3 million as compared to the prior year, which was primarily attributed to lower commissions and incentives of $9.3 million.

The following tables reconcile net income attributable to common stockholders to adjusted EBITDA and adjusted EBITDA margin % by segment, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31, 2025
(In millions)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$646.5$649.1$531.0$(1,180.8)$645.8
Net income (loss) income attributable to noncontrolling interests0.52.9(1.1)2.3
Gain on redemption of Series A Preferred Stock(32.9)(32.9)
Preferred stock dividends27.327.3
Provision for income taxes(1)213.4213.4
Interest expense, net(1)386.7386.7
Depreciation and amortization50.577.732.636.8197.6
Other expense (income), net16.064.4(2.6)(87.4)(9.6)
Stock-based compensation expense4.15.31.829.340.5
Digital transformation costs(2)35.235.2
Cloud computing arrangement amortization(3)30.230.2
Adjusted EBITDA$717.6$799.4$562.8$(543.3)$1,536.5
Adjusted EBITDA margin %8.0%8.8%10.3%
(1) The reportable segments do not incur income taxes and interest expense as these costs are centrally controlled through the Corporate tax and treasury functions.
(2) Digital transformation costs include costs associated with certain digital transformation initiatives.
(3) Cloud computing arrangement amortization consists of expense recognized in selling, general and administrative expenses for capitalized implementation costs for cloud computing arrangements to support our digital transformation initiatives.

34

Table of Contents

Year Ended December 31, 2024
(In millions)EES(1)CSS(1)UBSCorporateTotal
Net income attributable to common stockholders$641.0$496.8$733.0$(1,210.6)$660.2
Net (loss) income attributable to noncontrolling interests(1.1)2.30.61.8
Preferred stock dividends57.457.4
Provision for income taxes(2)231.6231.6
Interest expense, net(2)364.9364.9
Depreciation and amortization46.471.928.536.4183.2
Other expense (income), net(3)9.161.2(121.2)(41.8)(92.7)
Stock-based compensation expense4.46.63.114.828.9
Digital transformation costs(4)24.924.9
Loss on abandonment of assets(5)17.817.8
Cloud computing arrangement amortization(6)14.114.1
Restructuring costs(7)12.112.1
Excise taxes on excess pension plan assets(8)4.94.9
Adjusted EBITDA$699.8$638.8$643.4$(472.9)$1,509.1
Adjusted EBITDA margin %8.3%8.3%11.2%
(1) As described in Note 2, “Accounting Policies,” the reportable segment information for the year ended December 31, 2024 for the EES and CSS reportable segments has been recast to conform to the current year presentation.
(2) The reportable segments do not incur income taxes and interest expense as these costs are centrally controlled through the Corporate tax and treasury functions.
(3) Other income for the UBS segment includes the gain on the divestiture of the WIS business as disclosed in Note 5, “Acquisitions and Divestitures”.
(4) Digital transformation costs include costs associated with certain digital transformation initiatives.
(5) Loss on abandonment of assets represents the write-off of certain capitalized cloud computing arrangement implementation costs relating to a third-party developed operations management software product in favor of an application with functionality that better suits the Company's operations.
(6) Cloud computing arrangement amortization consists of expense recognized in selling, general and administrative expenses for capitalized implementation costs for cloud computing arrangements to support our digital transformation initiatives.
(7) Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.
(8) Excise taxes on excess pension plan assets represent the excise taxes applicable to the excess pension plan assets following the final settlement of the Company's U.S. pension plan.

Note: Adjusted EBITDA and Adjusted EBITDA margin % are non-GAAP financial measures that provide indicators of the Company’s performance and its ability to meet debt service requirements. Adjusted EBITDA margin % is calculated by dividing Adjusted EBITDA by net sales.

35

Table of Contents

The following tables reconcile SG&A expenses, income from operations, other non-operating (income) expense, provision for income taxes, net income attributable to common stockholders, and earnings per diluted share to adjusted SG&A expenses, adjusted income from operations, adjusted other non-operating (income) expense, adjusted provision for income taxes, adjusted net income attributable to common stockholders, and adjusted earnings per diluted share, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31,
20252024
Adjusted SG&A Expenses:(In millions)
SG&A expenses$3,541.4$3,306.2
Digital transformation costs(1)(35.2)(24.9)
Restructuring costs(2)(12.1)
Loss on abandonment of assets(3)(17.8)
Excise taxes on excess pension plan assets(4)(4.9)
Adjusted SG&A expenses$3,506.2$3,246.5
Adjusted Income from Operations:
Income from operations$1,233.0$1,223.2
Digital transformation costs(1)35.224.9
Restructuring costs(2)12.1
Loss on abandonment of assets(3)17.8
Excise taxes on excess pension plan assets(4)4.9
Adjusted income from operations$1,268.2$1,282.9
Adjusted Other (Income) Expense, net:
Other (income) expense, net$(9.6)$(92.7)
Loss on termination of business arrangement(5)(0.3)(3.6)
Pension settlement cost(6)(2.5)
Gain on divestiture122.2
Adjusted other (income) expense, net$(9.9)$23.4
Adjusted Provision for Income Taxes:
Provision for income taxes$213.4$231.6
Income tax effect of adjustments to income from operations and other (income) expense, net(7)9.5(14.8)
Adjusted provision for income taxes$222.9$216.8
Adjusted Net Income Attributable to Common Stockholders:
Net income attributable to common stockholders$645.8$660.2
Digital transformation costs(1)35.224.9
Restructuring costs(2)12.1
Loss on abandonment of assets(3)17.8
Excise taxes on excess pension plan assets(4)4.9
Gain on divestiture(122.2)
Loss on termination of business arrangement(5)0.33.6
Pension settlement cost(6)2.5
Income tax effect of adjustments to income from operations and other (income) expense, net(7)(9.5)14.8
Gain on redemption of Series A Preferred Stock(32.9)
Adjusted net income attributable to common stockholders$638.9$618.6

(1)    Digital transformation costs include costs associated with certain digital transformation initiatives.

(2)    Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

(3)    Loss on abandonment of assets represents the write-off of certain capitalized cloud computing arrangement implementation costs relating to a third-party developed operations management software product in favor of an application with functionality that better suits the Company’s operations.

(4)    Excise taxes on excess pension plan assets represent the excise taxes applicable to the excess pension plan assets following the final settlement of the Company’s U.S. pension plan.

(5)    Loss on termination of business arrangement represents the loss recognized as a result of management’s decision to terminate a business arrangement with a third party.

(6)    Pension settlement cost represents expense related to the settlement of the Company’s U.S. pension plan.

(7)    The adjustments to income from operations and other (income) expense, net for the years ended December 31, 2025 and 2024 have been tax effected at rates of 26.6% and 26.2%, respectively.

36

Table of Contents

Year Ended December 31,
Adjusted Earnings Per Diluted Share:20252024
(In millions, except per share data)
Adjusted income from operations$1,268.2$1,282.9
Interest expense, net386.7364.9
Adjusted other (income) expense, net(9.9)23.4
Adjusted income before income taxes891.4894.6
Adjusted provision for income taxes222.9216.8
Adjusted net income668.5677.8
Net income attributable to noncontrolling interests2.31.8
Adjusted net income attributable to WESCO International, Inc.666.2676.0
Preferred stock dividends27.357.4
Adjusted net income attributable to common stockholders$638.9$618.6
Diluted shares49.550.6
Adjusted earnings per diluted share$12.91$12.23

Note: For the year ended December 31, 2025, SG&A expenses, income from operations, other non-operating (income) expense, the provision for income taxes, net income attributable to common stockholders, and earnings per diluted share have been adjusted to exclude digital transformation costs, restructuring costs, the loss on termination of business arrangement, and the related income tax effects, and the gain on redemption of the Company's Series A Preferred Stock. For the year ended December 31, 2024, SG&A expenses, income from operations, other non-operating (income) expense, the provision for income taxes, net income attributable to common stockholders, and earnings per diluted share have been adjusted to exclude digital transformation costs, the loss on abandonment of assets, restructuring costs, excise taxes on excess pension plan assets, the gain recognized on the divestiture of the WIS business, the loss on termination of business arrangement, pension settlement cost, and the related income tax effects. These non-GAAP financial measures provide a better understanding of our financial results on a comparable basis.

37

Table of Contents

Liquidity and Capital Resources

Our liquidity needs generally arise from fluctuations in our working capital requirements, information technology investments, capital expenditures, acquisitions, the payment of dividends, and debt service obligations. We finance our operating and investing needs primarily with borrowings under our Revolving Credit Facility and Receivables Facility, as well as uncommitted lines of credit entered into by certain of our foreign subsidiaries to support local operations, some of which are overdraft facilities. The Revolving Credit Facility has a borrowing limit of $1,725 million and the purchase limit under the Receivables Facility is $1,550 million. Our international lines of credit generally are renewable on an annual basis and certain facilities are fully and unconditionally guaranteed by Wesco Distribution. Accordingly, certain borrowings under these lines directly reduce availability under our Revolving Credit Facility. The maximum borrowing limits of our international lines of credit vary by facility and range between $1.0 million and $12.0 million. As of December 31, 2025, we had $5.6 million outstanding under our international lines of credit.

As of December 31, 2025, we had $581.5 million outstanding and $1,107.9 million in available borrowing capacity on the Revolving Credit Facility after giving effect to outstanding letters of credit and certain borrowings under our international lines of credit. Additionally, as of December 31, 2025, we had $1,300.0 million outstanding and $250.0 million of available borrowing capacity under our Receivables Facility, which combined with available cash of $282.1 million, provided liquidity of approximately $1.6 billion. Cash included in our determination of liquidity represents cash in certain deposit and interest-bearing investment accounts held in the United States and Canada. We monitor the depository institutions that hold our cash and cash equivalents on a regular basis, and we believe that we have placed our deposits with creditworthy financial institutions.

For information regarding amendments to the Receivables Facility and Revolving Credit Facility as well as disclosure of our debt instruments, including our outstanding indebtedness as of December 31, 2025, see Note 9, “Debt” of our Notes to Consolidated Financial Statements.

As described in Note 9, “Debt” of our Notes to Consolidated Financial Statements, on March 6, 2025, Wesco Distribution issued $800 million aggregate principal amount of 2033 Notes. We used the net proceeds from the issuance of the 2033 Notes to redeem all of the Company’s outstanding Series A Preferred Stock and all of the related depositary shares representing fractional interests in the Series A Preferred Stock in June 2025, and to repay a portion of the amounts outstanding under the Revolving Credit Facility.

We regularly review our mix of fixed versus variable rate debt, and we may, from time to time, issue or retire borrowings and/or refinance existing debt in an effort to mitigate the impact of interest rate and foreign exchange rate fluctuations, and to maintain a cost-effective capital structure consistent with our anticipated capital requirements. Interest rates remained stable in the first half of 2025 before the Federal Reserve reacted to economic conditions and reduced its benchmark interest rate at the end of the third quarter and twice more in the fourth quarter by 25 basis points, respectively, for a total reduction of 75 basis points in the second half of 2025. Future interest rate changes would raise or lower the rates we pay on our variable rate debt and would contribute to fluctuations in interest expense versus prior periods.

At December 31, 2025, approximately 66% of our debt portfolio consisted of fixed rate debt. We believe our capital structure has an appropriate mix of fixed versus variable rate debt and secured versus unsecured instruments.

Over the next several quarters, we expect that our excess liquidity will be directed primarily at debt reduction, the payment of dividends, share repurchases, digital transformation initiatives, and potential acquisitions and related integration activities. We expect to maintain sufficient liquidity through our credit facilities and cash balances. We continue to monitor the sufficiency of our liquidity given the potential impact of current economic conditions and uncertainty, including tariffs, interest rates, and inflation. While we did not face significant challenges with our sources or uses of cash in 2025, future market disruptions could occur which could potentially affect our liquidity. We believe cash provided by operations and financing activities will be adequate to cover our operational and business needs for at least the next twelve months.

We communicate on a regular basis with our lenders regarding our financial and working capital performance, and liquidity position. We were in compliance with all financial covenants and restrictions contained in our debt agreements as of December 31, 2025.

We also measure our ability to meet our debt obligations based on our financial leverage ratio, which was 3.4x as of December 31, 2025 and 2.9x as of December 31, 2024.

38

Table of Contents

The following table sets forth our financial leverage ratio, which is a non-GAAP financial measure, for the periods presented:

Twelve months ended
December 31, 2025December 31, 2024
(In millions of dollars, except ratios)
Net income attributable to common stockholders$645.8$660.2
Net income attributable to noncontrolling interests2.31.8
Gain on redemption of Series A Preferred Stock(32.9)
Preferred stock dividends27.357.4
Provision for income taxes213.4231.6
Interest expense, net386.7364.9
Depreciation and amortization197.6183.2
EBITDA$1,440.2$1,499.1
Other income, net(9.6)(92.7)
Stock-based compensation expense40.528.9
Digital transformation costs(1)35.224.9
Cloud computing arrangement amortization(2)30.214.1
Restructuring costs(3)12.1
Loss on abandonment of assets(4)17.8
Excise taxes on excess pension plan assets(5)4.9
Adjusted EBITDA$1,536.5$1,509.1
As of
December 31, 2025December 31, 2024
Short-term debt and current portion of long-term debt, net$25.0$19.5
Long-term debt, net5,756.45,045.5
Debt discount and debt issuance costs(6)48.047.2
Fair value adjustments to the Anixter Senior Notes(6)(0.1)
Total debt5,829.45,112.1
Less: Cash and cash equivalents604.8702.6
Total debt, net of cash$5,224.6$4,409.5
Financial leverage ratio3.42.9

(1)    Digital transformation costs include costs associated with certain digital transformation initiatives.

(2)    Cloud computing arrangement amortization consists of expense recognized in selling, general and administrative expenses for capitalized implementation costs for cloud computing arrangements to support our digital transformation initiatives.

(3)    Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

(4)    Loss on abandonment of assets represents the write-off of certain capitalized cloud computing arrangement implementation costs relating to a third-party developed operations management software product in favor of an application with functionality that better suits the Company’s operations.

(5)    Excise taxes on excess pension plan assets represent the excise taxes applicable to the excess pension plan assets following the final settlement of the Company’s U.S. pension plan.

(6)    Debt is presented in the Consolidated Balance Sheets net of debt issuance costs and debt discount, and includes adjustments to record the long-term debt assumed in the merger with Anixter at its acquisition date fair value.

Note: Financial leverage ratio is a non-GAAP measure of the use of debt. Financial leverage ratio is calculated by dividing total debt, excluding debt issuance costs, debt discount and fair value adjustments, net of cash, by adjusted EBITDA. EBITDA is defined as the trailing twelve months earnings before interest, taxes, depreciation and amortization.

39

Table of Contents

An analysis of cash flows for 2025 and 2024 follows:

Operating Activities

Net cash provided by operating activities for 2025 totaled $125.0 million, compared to $1,101.2 million in 2024. The $976.2 million decrease is primarily driven by a $507.3 million impact from changes in trade accounts receivable and a $428.1 million impact from changes in inventories. The impact from trade accounts receivable was primarily due to sales growth in the CSS and EES segments, as well as the timing of receipts from customers as compared to the prior year. The impact from inventories was primarily due to an increase in volume related to growth in large projects as compared to the prior year. These decreases were partially offset by an increase in net income as adjusted for certain non-cash items.

Investing Activities

Net cash used in investing activities in 2025 was $140.7 million compared to $40.4 million provided by investing activities in 2024. Included in 2025 were capital expenditures of $99.8 million compared to $94.7 million in 2024. Capital expenditures in 2025 and 2024 primarily comprised equipment and leasehold improvements to support our global network of locations, and internal-use computer software and information technology hardware to support our digital transformation initiatives.

Net cash used in investing activities in 2025 also included $36.3 million paid to acquire Industrial Software Solutions, net of cash acquired. Included in net cash provided by investing activities in 2024 were $354.9 million in proceeds from the divestiture of the WIS business, net of cash transferred, partially offset by $221.3 million paid to acquire Ascent, entroCIM and Independent Electric Supply, net of cash acquired.

Financing Activities

Net cash used in financing activities in 2025 was $92.7 million, compared to $928.3 million in 2024. During 2025, financing activities primarily comprised proceeds of $800 million related to the issuance of the 2033 Notes, net borrowings of $54.8 million related to our Revolving Credit Facility, net repayments of $150.0 million related to our Receivables Facility, and payment of total debt issuance costs of $14.0 million related to the issuance of the 2033 Notes and amendments to the Revolving Credit Facility and Receivables Facility. Financing activities for 2025 also included $540.3 million paid to redeem our Series A Preferred Stock, $75.0 million of common stock repurchases, $88.4 million and $27.3 million of dividends paid to holders of our common stock and Series A Preferred Stock, respectively, and $37.2 million of payments for taxes related to the exercise and vesting of stock-based awards.

During 2024, financing activities primarily comprised proceeds of $900.0 million and $850.0 million related to the issuance of the 6.375% senior notes due 2029 and 6.625% senior notes due 2032 (the “2029 and 2032 Notes”), respectively, the redemption of our $1,500.0 million aggregate principal amount of 7.125% Senior Notes due 2025, net repayments of $428.0 million related to our Revolving Credit Facility, net repayments of $100.0 million related to our Receivables Facility, and payment of total debt issuance costs of $26.6 million related to the issuance of the 2029 and 2032 Notes and amendments to the Revolving Credit Facility and Receivables Facility. Financing activities for 2024 also included $425.0 million of common stock repurchases, $81.5 million and $57.4 million of dividends paid to holders of our common stock and Series A Preferred Stock, respectively, and $30.9 million of payments for taxes related to the exercise and vesting of stock-based awards.

The following table summarizes our material cash requirements from known contractual and other obligations at December 31, 2025, including interest, and the expected effect on our liquidity and cash flow in future periods:

20262027 to 20282029 to 20302031 - AfterTotal
(In millions)
Debt, excluding debt discount and debt issuance costs(1)$25.0$2,655.1$1,497.2$1,652.1$5,829.4
Interest on indebtedness(1)(2)356.4608.7278.3218.41,461.8
Non-cancelable operating leases243.4393.9248.2215.61,101.1
Transition tax installments13.713.7
Total$638.5$3,657.7$2,023.7$2,086.1$8,406.0

(1)    Debt payments include both principal and interest payments on debt and finance lease obligations.

(2)    Interest on variable rate debt was calculated using the rates and balances outstanding at December 31, 2025.

In addition to the cash requirements disclosed in the table above, we expect future uses of cash to include working capital requirements, capital expenditures, investments in our digital capabilities, dividend payments to holders of our common stock, and other organic opportunities. Future uses of cash could also include acquisitions of businesses and the repurchase of common stock. We expect to spend approximately $100 million in 2026 on capital expenditures for information technology investments and to support our global network of distribution centers, fulfillment centers and sales offices.

40

Table of Contents

We expect to fund future uses of cash with a combination of existing cash balances, cash generated from operating activities, borrowings under our revolving credit and accounts receivable securitization facilities, or new issuances of debt.

Purchase orders for inventory requirements and service contracts are not included in the table above. Generally, our purchase orders and contracts contain clauses allowing for cancellation. We do not have agreements to purchase material or goods that would specify significant minimum order quantities.

Liabilities related to unrecognized tax benefits, including interest and penalties, of $164.7 million were excluded from the table above as we cannot reasonably estimate the timing of these potential cash settlements with taxing authorities. See Note 11, “Income Taxes” of our Notes to Consolidated Financial Statements for further information related to unrecognized tax benefits.

The undistributed earnings of our foreign subsidiaries amounted to approximately $2,109.2 million at December 31, 2025. Most of these earnings have been taxed in the U.S. under either the one-time tax on the deemed repatriation of undistributed foreign earnings (the “transition tax”), or the global intangible low-taxed income (“GILTI”) tax regime imposed by the Tax Cuts and Jobs Act of 2017 (the “TCJA”). We have elected to pay the transition tax in installments over an eight year period ending in 2026. As of December 31, 2025, our remaining liability for the transition tax was $13.7 million. We continue to assert that the remaining undistributed earnings of our foreign subsidiaries are indefinitely reinvested. The distribution of earnings by our foreign subsidiaries in the form of dividends, or otherwise, may be subject to additional taxation. We estimate that additional taxes of approximately $116.6 million would be payable upon the remittance of all previously undistributed foreign earnings as of December 31, 2025, based upon the laws in effect on that date. We believe that we are able to maintain sufficient liquidity for our domestic operations and commitments without repatriating cash from our foreign subsidiaries.

Seasonality

Our operating results are not significantly affected by seasonal factors. Sales during the first and fourth quarters have historically been affected by a reduced level of activity primarily due to the impact of weather on projects. Sales typically increase beginning in March, with slight fluctuations per month through October. During periods of economic expansion or contraction, our sales by quarter have varied significantly from this pattern.

Recent Accounting Standards

See Note 2, “Accounting Policies” of our Notes to Consolidated Financial Statements for a description of recently adopted and recently issued accounting standards.

MD&A history

Prior-year 10-K MD&A spans are extracted from SEC filings with the same bounded parser used for the latest filing. The latest 10-K appears above; prior years are below.

FY 2024 10-K MD&A

SEC filing source: 0000929008-25-000005.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2025-02-14. Report date: 2024-12-31.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the audited consolidated financial statements and notes thereto included in Item 8 of this Annual Report on Form 10-K. The matters discussed herein may contain forward-looking statements that are subject to certain risks and uncertainties that could cause actual results to differ materially from expectations. Certain of these risks are set forth in Item 1A of this Annual Report on Form 10-K. In this Item 7, “Wesco” refers to WESCO International, Inc., and its subsidiaries and its predecessors unless the context otherwise requires. References to “we,” “us,” “our” and the “Company” refer to Wesco and its subsidiaries.

In addition to the results provided in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), our discussion and analysis of financial condition and results of operations includes certain non-GAAP financial measures, which are defined further below. These financial measures include organic sales growth, earnings before interest, taxes, depreciation and amortization (“EBITDA”), adjusted EBITDA, adjusted EBITDA margin, financial leverage, adjusted selling, general and administrative expenses, adjusted income from operations, adjusted other non-operating expense (income), adjusted provision for income taxes, adjusted income before income taxes, adjusted net income, adjusted net income attributable to WESCO International, Inc., adjusted net income attributable to common stockholders, and adjusted earnings per diluted share. We believe that these non-GAAP measures are helpful to users of our financial statements as they provide a better understanding of our financial condition and results of operations on a comparable basis. Additionally, certain non-GAAP measures either focus on or exclude items impacting comparability of results, allowing users to more easily compare our financial performance from period to period. Management uses certain non-GAAP financial measures in its evaluation of the performance of the Company’s operating segments and in the determination of incentive compensation. Management does not use these non-GAAP financial measures for any purpose other than the reasons stated above.

Company Overview

Wesco, headquartered in Pittsburgh, Pennsylvania, is a leading provider of business-to-business distribution, logistics services and supply chain solutions.

We employ approximately 20,000 people, maintain relationships with more than 35,000 suppliers, and serve nearly 140,000 customers worldwide. With millions of products, end-to-end supply chain services, and leading digital capabilities, we provide innovative solutions to meet customer needs across commercial and industrial businesses, contractors, government agencies, educational institutions, telecommunications providers, utilities, and technology companies. Our innovative value-added solutions include supply chain management, logistics and transportation, procurement, warehousing and inventory management, as well as kitting and labeling, limited assembly of products and installation enhancement. We operate more than 700 sites, including distribution centers, fulfillment centers, and sales offices, in approximately 50 countries, providing a local presence for customers and a global network to serve multi-location businesses and global corporations.

We have operating segments comprising three strategic business units consisting of Electrical & Electronic Solutions (“EES”), Communications & Security Solutions (“CSS”) and Utility & Broadband Solutions (“UBS”). These operating segments are equivalent to our reportable segments. See Item 1, “Business” in this Annual Report on Form 10-K for a description of each of our reportable segments and their business activities.

Overall Financial Performance

Our financial results for 2024 compared to 2023 reflect a single-digit decline in sales driven by a decrease in volume partially offset by the benefits of price inflation in certain segments. Additionally, financial results were impacted by higher facilities costs, a loss on abandonment of assets, and higher IT costs, partially offset by the gain recognized on the divestiture of our WIS business, as well as lower professional services and consulting fees.

Net sales for 2024 decreased $566.4 million, or 2.5%, over the prior year. The decrease reflects estimated volume decline of approximately 2% driven primarily by a decrease in volume for the UBS segment, with a less significant decrease in the EES segment, partially offset by an increase in the CSS segment. The reduction also includes the effect of the divestiture of the Wesco Integrated Supply (“WIS”) business of 2.6% and the negative impact of fluctuations in foreign exchange rates of 0.2%. These negative factors were partially offset by the estimated impact of changes in price of approximately 1%, the favorable impact from the number of workdays of 0.8%, and the increase from the acquisition of Ascent, LLC (“Ascent”) of 0.1%. Cost of goods sold as a percentage of net sales was 78.4% for the current and prior year.

Income from operations was $1.2 billion for 2024, compared to $1.4 billion for 2023, a decrease of 13.0%. Income from operations as a percentage of net sales was 5.6% for the current year, compared to 6.3% for the prior year. Income from operations for 2024 includes digital transformation costs of $24.9 million, a loss on abandonment of assets of $17.8 million as a result of the write-off of certain capitalized cloud computing arrangement implementation costs relating to a third-party developed operations management software product that will no longer be utilized, restructuring costs of $12.1 million, and excise taxes on excess pension plan assets of $4.9 million. Adjusted for these amounts, income from operations was 5.9% of net

26

Table of Contents

sales in 2024. For 2023, income from operations was 6.6% of net sales, as adjusted for digital transformation costs of $36.1 million, merger-related and integration costs of $19.3 million, restructuring costs of $16.7 million, and accelerated trademark amortization of $1.6 million. For the year ended December 31, 2024, income from operations declined compared to the prior year due to a decline in sales, an increase in costs to operate our facilities and an increase in IT costs. These factors were partially offset by a decrease in professional services and consulting fees.

Cash Flow

Operating cash flow for 2024 was $1,101.2 million. Net cash provided by operating activities included net income of $719.4 million and non-cash adjustments to net income totaling $105.6 million, which primarily comprised depreciation and amortization, stock-based compensation expense, a loss on abandonment of assets, amortization of debt discount and debt issuance costs, and cloud computing arrangement amortization, partially offset by a gain resulting from the divestiture of our WIS business, as described in Note 5, “Acquisitions and Divestitures” and deferred income taxes. Operating cash flow was positively impacted by an increase in accounts payable of $329.5 million, primarily due to the timing of inventory purchases and payments to suppliers, an increase in other current and noncurrent liabilities of $93.3 million, primarily due to increases in federal income taxes payable, accrued interest payable, and operating lease liabilities, and an increase of $62.7 million in accrued payroll and benefits costs, driven by an increase in accrued salaries and wages and the reversion of excess pension plan assets from the settlement of the U.S. pension plan, partially offset by contributions to other pension plans. Operating cash flow was negatively impacted by an increase in other current and noncurrent assets of $142.6 million primarily due to increases in capitalized costs associated with developing cloud computing arrangements, supplier prepayments, and contract assets, and an increase in trade accounts receivable of $50.7 million due to the timing of receipts from customers.

Investing activities primarily included $354.9 million in proceeds from the divestiture of the WIS business, net of cash transferred, partially offset by $221.3 million paid in the aggregate to acquire Ascent, the entroCIM business (“entroCIM”), and Independent Electric Supply Inc. (“IES”), net of cash acquired, and $94.7 million of capital expenditures mostly consisting of internal-use computer software and information technology hardware to support our digital transformation initiatives, as well as equipment and leasehold improvements to support our global network of locations.

Financing activities primarily comprised the redemption of our $1,500.0 million aggregate principal amount of 7.125% Senior Notes due 2025 (the “2025 Notes”), and proceeds of $900.0 million and $850.0 million related to the issuance of our 6.375% Senior Notes due 2029 (the “2029 Notes”) and our 6.625% Senior Notes due 2032 (the “2032 Notes” and, together with the 2029 Notes, the “2029 and 2032 Notes”), respectively. Additionally, financing activities comprised net repayments of $428.0 million related to our revolving credit facility (the “Revolving Credit Facility”), net repayments of $100.0 million related to our accounts receivable securitization facility (the “Receivables Facility”), and payment of total debt issuance costs of $26.6 million related to the issuance of the 2029 and 2032 Notes and amendments to the Revolving Credit Facility and Receivables Facility. Financing activities for 2024 also included $425.0 million of common stock repurchases, $81.5 million and $57.4 million of dividends paid to holders of our common stock and Series A Preferred Stock, respectively, and $30.9 million of payments for taxes related to the exercise and vesting of stock-based awards.

Financing Availability

As of December 31, 2024, we had $1.2 billion in total available borrowing capacity under our Revolving Credit Facility and $100.0 million of available borrowing capacity under our Receivables Facility. The Revolving Credit Facility and the Receivables Facility both mature in March 2027.

Critical Accounting Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates that involve a significant level of estimation uncertainty and have had or are reasonably likely to have a material impact on the financial condition or results of operations, including those related to goodwill and indefinite-lived intangible assets, defined benefit pension plans, and income taxes. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. If actual market conditions are less favorable than those projected by management, additional adjustments to reserve items may be required. We believe the following accounting estimates are the most critical to the understanding of our consolidated financial statements as they require subjective or complex judgments by management.

27

Table of Contents

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and indefinite-lived intangible assets are tested for impairment annually as of October 1, or more frequently if triggering events occur, indicating that their carrying values may not be recoverable. We test for goodwill impairment on a reporting unit level. We have the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset is less than its carrying value as a basis for determining whether it is necessary to perform quantitative impairment tests. When performing a qualitative assessment we consider several factors, including macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, other relevant events such as changes in key personnel, changes in the composition or carrying amount of the net assets of a reporting unit, and changes in share price.

We will perform a quantitative impairment test if we bypass the qualitative assessment, or if based on the qualitative assessment, it is more likely than not that the fair value of each reporting unit or indefinite-lived intangible asset is less than the carrying amount. For the year ended December 31, 2024, we elected to bypass the qualitative assessments and performed annual quantitative impairment tests of goodwill and indefinite-lived intangible assets during the fourth quarter of 2024 by comparing the fair values of our reporting units and indefinite-lived intangible assets to their carrying values. As a result of these assessments, we determined that the fair values of our reporting units and indefinite-lived intangible assets continue to exceed their respective carrying amounts.

The determination of fair value involves significant management judgment, particularly as it relates to the underlying assumptions and factors around future expected revenues, operating margins and discount rate. We performed sensitivity analyses around certain of these assumptions in order to assess the reasonableness of the assumptions and resulting estimated fair values. Management applies its best judgment when assessing the reasonableness of financial projections. Fair values are sensitive to changes in underlying assumptions and factors, and as a result there can be no assurance that the estimates and assumptions made for purposes of the annual goodwill and indefinite-lived intangible assets impairment tests will prove to be an accurate prediction of future results.

See Note 2, “Accounting Policies” and Note 6, “Goodwill and Intangible Assets” of our Notes to Consolidated Financial Statements for additional disclosure regarding goodwill and indefinite-lived intangible assets.

Defined Benefit Pension Plans

Liabilities and expenses for defined benefit pension plans are determined using actuarial methodologies and incorporate significant assumptions, including the interest rate used to discount the future estimated cash flows, the expected long-term rate of return on plan assets, and several assumptions relating to the employee workforce (salary increases, retirement age, and mortality).

Liabilities for defined benefit pension plans are particularly sensitive to changes in the discount rate. At the end of each fiscal year, we determine the discount rate to measure our defined benefit pension plan liabilities at their present value. The discount rate reflects the current rate at which the defined benefit pension plan liabilities could be effectively settled at the end of the year. This rate is estimated using a yield curve based on corporate bond data, which we believe is consistent with observable market conditions and industry standards for developing spot rate curves. The consolidated weighted-average discount rate used to measure the projected benefit obligation of all plans was 4.8% and 4.4% at December 31, 2024 and 2023, respectively. As a sensitivity measure, the effect of a 50-basis-point decline in the assumed discount rate would result in no change in the expense for 2025, and an increase in our projected benefit obligations at December 31, 2024 of $21.0 million. The impact of a 50-basis-point increase in the assumed discount rate would result in a decrease in the expense for 2025 of approximately $2.0 million, and a decrease in our projected benefit obligations at December 31, 2024 of $19.0 million. Changes in the expected long-term rate of return on plan assets and assumptions relating to the employee workforce are less likely to have a material impact on the measurement of defined benefit pension plan liabilities.

See Note 2, “Accounting Policies” and Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements for additional disclosure regarding defined benefit pension plans.

Income Taxes

We recognize deferred tax assets consistent with amounts expected to be realized. To make such determination, management evaluates all positive and negative evidence, including but not limited to, prior, current and future taxable income, tax planning strategies and future reversals of existing taxable temporary differences. A valuation allowance is recognized if it is “more-likely-than-not” that some or all of a deferred tax asset will not be realized. We regularly assess the realizability of deferred tax assets.

28

Table of Contents

We account for uncertainty in income taxes using a “more-likely-than-not” recognition threshold. Due to the subjectivity inherent in the evaluation of uncertain tax positions, the tax benefit ultimately recognized may materially differ from the estimate recognized in the consolidated financial statements. We recognize interest and penalties related to uncertain tax benefits as part of interest expense and income tax expense, respectively.

See Note 2, “Accounting Policies” and Note 11, “Income Taxes” of our Notes to Consolidated Financial Statements for additional disclosure regarding income taxes.

Results of Operations

2024 Compared to 2023

Net Sales

The following table sets forth net sales and organic sales growth for the periods presented:

Year Ended December 31,Growth/(Decline)
20242023Reported SalesAcquisitions/DivestitureForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$21,818.8$22,385.2(2.5)%(2.5)%(0.2)%0.8%(0.6)%

Note: Organic sales growth is a non-GAAP financial measure of sales performance. Organic sales growth is calculated by deducting the percentage impact from acquisitions and divestitures for one year following the respective transaction, fluctuations in foreign exchange rates and number of workdays from the reported percentage change in consolidated net sales. Workday impact represents the change in the number of operating days period-over-period after adjusting for weekends and public holidays in the United States; 2024 had two more workdays compared to 2023.

Net sales were $21.8 billion for 2024 compared to $22.4 billion for 2023, a decrease of 2.5%. Adjusting for the decrease from the divestiture of the WIS business of 2.6%, the unfavorable impact from fluctuations in foreign exchange rates of 0.2%, the favorable impact from the number of workdays of 0.8%, and the increase from the acquisition of Ascent of 0.1%, organic sales for 2024 declined by 0.6%, reflecting an approximately 2% decline in volume, driven by declines in the UBS and EES segments, partially offset by a volume increase in the CSS segment, and the impact of changes in price, which favorably impacted organic sales by approximately 1%.

Cost of Goods Sold

Cost of goods sold for 2024 was $17.1 billion compared to $17.5 billion for 2023, a decrease of $0.4 billion. Cost of goods sold as a percentage of net sales was 78.4% for the current and prior year.

Selling, General and Administrative Expenses

Selling, general and administrative (“SG&A”) expenses primarily include payroll and payroll-related costs, shipping and handling, travel and entertainment, facilities, utilities, information technology expenses, professional and consulting fees, credit losses, gains (losses) on the sale, disposal, or abandonment of property and equipment, as well as real estate and personal property taxes. SG&A expenses for 2024 totaled $3,306.2 million versus $3,256.0 million for 2023, an increase of 1.5%. As a percentage of net sales, SG&A expenses were 15.2% and 14.5% for 2024 and 2023, respectively. SG&A expenses for 2024 include $24.9 million of digital transformation costs, a $17.8 million loss on abandonment of assets, $12.1 million of restructuring costs, and $4.9 million of excise taxes on excess pension plan assets. SG&A expenses for 2023 include digital transformation costs of $36.1 million, merger-related and integration costs of $19.3 million, and restructuring costs of $16.7 million. Adjusted for digital transformation costs, the loss on abandonment of assets, restructuring costs, and excise taxes on excess pension plan assets, SG&A expenses for 2024 were 14.9% of net sales for 2024. Adjusted for digital transformation costs, merger-related and integration costs, and restructuring costs, SG&A expenses for 2023 were 14.2% of net sales.

SG&A payroll and payroll-related expenses for 2024 of $2,049.5 million decreased by $2.9 million compared to 2023.

SG&A expenses not related to payroll and payroll-related costs for 2024 were $1,256.7 million, an increase of $53.1 million compared to 2023, which primarily reflects higher costs to operate our facilities of $28.0 million, an increase of $20.5 million in other income and deductions, driven by the loss on abandonment of assets, an increase of $12.7 million in IT costs, and an increase of $10.6 million in taxes, partially due to the $4.9 million of excise taxes on excess pension plan assets as discussed above. These increases were partially offset by a $14.1 million decrease in professional service and consulting fees, including decreases in merger-related and integration costs and costs related to digital transformation initiatives.

29

Table of Contents

Income from Operations

Income from operations was $1.2 billion for 2024 compared to $1.4 billion for 2023. The decrease of 13.0%, reflects a decrease in sales due to volume declines, and higher SG&A expenses, as described above.

Interest Expense, net

Net interest expense totaled $364.9 million for 2024 compared to $389.3 million for 2023. The decrease of $24.4 million, or 6.3%, primarily reflects lower borrowings, the redemption of the 2025 Notes in the second quarter of 2024, and a decrease in variable interest rates.

Other (Income) Expense, net

Other non-operating income totaled $92.7 million for 2024 compared to expense of $25.1 million for 2023. In 2024, we completed the divestiture of our WIS business and recognized a gain from the sale of $122.2 million. Due to fluctuations in the U.S. dollar against certain foreign currencies, we recognized a net foreign currency exchange loss of $25.5 million for 2024 compared to a net loss of $22.9 million for 2023. Adjusted for the gain on the divestiture of our WIS business, a $3.6 million loss on termination of a business arrangement, and $2.5 million of pension settlement cost related to the final settlement of the Anixter Inc. Pension Plan, other non-operating expense was $23.4 million for 2024. Other non-operating expense for 2023 includes net pension settlement cost of $2.8 million primarily related to the partial settlement of the Anixter Inc. Pension Plan, partially offset by pension settlement gains related to other plans. Adjusted for this amount, other non-operating expense was $22.3 million for 2023.

Income Taxes

The provision for income taxes was $231.6 million for 2024 compared to $225.9 million for 2023, resulting in effective tax rates of 24.4% and 22.8%, respectively. The higher effective tax rate is primarily due to a valuation allowance being recorded against certain deferred tax assets in the current year.

Net Income and Earnings per Share

Net income and earnings per diluted share attributable to common stockholders were $660.2 million and $13.05, respectively, for 2024 compared to $708.1 million and $13.54, respectively, for 2023. Adjusted for digital transformation costs, the loss on abandonment of assets, restructuring costs, excise taxes on excess pension plan assets, the gain recognized on the divestiture of the WIS business, the loss on termination of a business arrangement, pension settlement cost, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $618.6 million and $12.23, respectively, for the year ended December 31, 2024. Adjusted for digital transformation costs, merger-related and integration costs, restructuring costs, accelerated trademark amortization expense, net pension settlement cost, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $763.6 million and $14.60, respectively, for the year ended December 31, 2023.

Adjusted EBITDA

Adjusted EBITDA, a non-GAAP financial measure, was $1.5 billion for 2024 compared to $1.7 billion for 2023. Adjusted EBITDA decreased 11.5% year-over-year. The decrease primarily reflects the $566.4 million decrease in net sales, and a $50.2 million increase in SG&A expenses, as described above, partially offset by a corresponding decrease in cost of goods sold of $435.3 million.

Segment Results

The following is a discussion of the financial results of our operating segments comprising three strategic business units consisting of EES, CSS and UBS for the year ended December 31, 2024. As further described below and in Note 16, “Business Segments” of our Notes to Consolidated Financial Statements, the performance of our operating segments is based on net sales, adjusted EBITDA, and adjusted EBITDA margin percentage. Adjusted EBITDA and adjusted EBITDA margin percentage are non-GAAP financial measures.

30

Table of Contents

Electrical & Electronic Solutions

Year Ended December 31,Growth/(Decline)
20242023Reported SalesAcquisitionForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$8,546.8$8,610.3(0.7)%%(0.5)%0.8%(1.0)%
Adjusted EBITDA$717.5$727.4
Adjusted EBITDA margin %8.4%8.4%

EES reported net sales of $8.5 billion for 2024 compared to $8.6 billion for 2023, a decrease of 0.7%. Adjusting for the unfavorable impact from fluctuations in foreign exchange rates of 0.5% and the favorable impact from the number of workdays of 0.8%, EES organic sales for 2024 declined 1.0%, reflecting volume declines of approximately 2%, primarily as a result of a decline in the original equipment manufacturer business. The decline in volume was partially offset by the impact of changes in price, which favorably impacted organic sales by approximately 1%.

EES reported adjusted EBITDA of $717.5 million for 2024, or 8.4% of net sales, compared to $727.4 million for 2023, or 8.4% of net sales. Adjusted EBITDA decreased $9.9 million, or 1.4% year-over-year. The decrease primarily reflects the $63.5 million decline in net sales, as described above, partially offset by a corresponding decrease in cost of goods sold of $58.4 million.

Communications & Security Solutions

Year Ended December 31,Growth/(Decline)
20242023Reported SalesAcquisitionsForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$7,537.0$7,152.25.4%0.5%(0.2)%0.8%4.3%
Adjusted EBITDA$621.1$683.8
Adjusted EBITDA margin %8.2%9.6%

CSS reported net sales of $7.5 billion for 2024 compared to $7.2 billion for 2023, an increase of 5.4%. Adjusting for the favorable impact from the acquisition of Ascent of 0.5%, the unfavorable impact from fluctuations in foreign exchange rates of 0.2%, and the favorable impact from the number of workdays of 0.8%, CSS organic sales for 2024 grew by 4.3%, primarily as a result of growth in the data center solutions business, partially offset by volume decline in the enterprise network infrastructure and security solutions businesses. Changes in price did not have a material impact on the year-over-year increase in CSS organic sales.

CSS reported adjusted EBITDA of $621.1 million for 2024, or 8.2% of net sales, compared to $683.8 million for 2023, or 9.6% of net sales. Adjusted EBITDA decreased $62.7 million, or 9.2% year-over-year. The decrease reflects an increase in net sales of $384.8 million, which was more than offset by an increase in cost of goods sold of $393.8 million, which is inclusive of an increase in inventory adjustments of $13.1 million and lower supplier volume rebates of approximately $4.1 million, and an increase in SG&A expenses of $55.1 million. The increase in SG&A expenses is primarily attributed to increased commissions and incentives of $13.5 million, higher salaries of $11.5 million, higher costs to operate our facilities of $5.5 million, which includes an increase in rents and the opening of a new facility, higher benefits expense of $5.4 million, and higher professional and consulting fees of $5.3 million.

31

Table of Contents

Utility & Broadband Solutions

Year Ended December 31,Growth/(Decline)
20242023ReportedDivestitureForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$5,735.0$6,622.7(13.4)%(8.9)%(0.1)%0.8%(5.2)%
Adjusted EBITDA$643.4$739.3
Adjusted EBITDA margin %11.2%11.2%

UBS reported net sales of $5.7 billion for 2024 compared to $6.6 billion for 2023, a decrease of 13.4%. Adjusting for the decrease from the divestiture of the WIS business of 8.9%, the unfavorable impact of fluctuations in foreign exchange rates of 0.1%, and the favorable impact from the number of workdays of 0.8%, UBS organic sales for 2024 declined 5.2%, reflecting volume declines of approximately 7%, primarily as a result of declines in the utility and broadband businesses. The decline in volume was partially offset by the impact of changes in price, which favorably impacted organic sales by approximately 2%.

UBS reported adjusted EBITDA of $643.4 million for 2024, or 11.2% of net sales, compared to $739.3 million for 2023, or 11.2% of net sales. Adjusted EBITDA decreased $95.9 million, or 13.0% year-over-year. The decrease primarily reflects the $887.7 million decrease in net sales, as described above, partially offset by a corresponding decrease in cost of goods sold of $770.7 million, which is inclusive of lower supplier volume rebates of $20.6 million. SG&A expenses decreased $21.1 million as compared to the prior year, which was primarily attributed to a decrease in commissions and incentives of $17.0 million, driven by lower sales volume and the impact of the WIS divestiture.

32

Table of Contents

The following tables reconcile net income attributable to common stockholders to adjusted EBITDA and adjusted EBITDA margin % by segment, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31, 2024
(In millions)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$656.9$480.9$733.0$(1,210.6)$660.2
Net (loss) income attributable to noncontrolling interests(1.1)2.30.61.8
Preferred stock dividends57.457.4
Provision for income taxes(1)231.6231.6
Interest expense, net(1)364.9364.9
Depreciation and amortization46.871.528.536.4183.2
Other expense (income), net(2)10.559.8(121.2)(41.8)(92.7)
Stock-based compensation expense4.46.63.114.828.9
Digital transformation costs(3)24.924.9
Loss on abandonment of assets(4)17.817.8
Cloud computing arrangement amortization(5)14.114.1
Restructuring costs(6)12.112.1
Excise taxes on excess pension plan assets(7)4.94.9
Adjusted EBITDA$717.5$621.1$643.4$(472.9)$1,509.1
Adjusted EBITDA margin %8.4%8.2%11.2%
(1) The reportable segments do not incur income taxes and interest expense as these costs are centrally controlled through the Corporate tax and treasury functions.
(2) Other income for the UBS segment includes the gain on the divestiture of the WIS business as disclosed in Note 5, “Acquisitions and Divestitures”.
(3) Digital transformation costs include costs associated with certain digital transformation initiatives.
(4) Loss on abandonment of assets represents the write-off of certain capitalized cloud computing arrangement implementation costs relating to a third-party developed operations management software product in favor of an application with functionality that better suits the Company’s operations.
(5) Cloud computing arrangement amortization consists of expense recognized in selling, general and administrative expenses for capitalized implementation costs for cloud computing arrangements to support our digital transformation initiatives.
(6) Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.
(7) Excise taxes on excess pension plan assets represent the excise taxes applicable to the excess pension plan assets following the final settlement of the Company’s U.S. pension plan.

33

Table of Contents

Year Ended December 31, 2023
(In millions)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$668.7$531.1$712.5$(1,204.2)$708.1
Net (loss) income attributable to noncontrolling interests(0.5)1.6(0.5)0.6
Preferred stock dividends57.457.4
Provision for income taxes(1)225.9225.9
Interest expense, net(1)389.3389.3
Depreciation and amortization43.371.725.041.3181.3
Other expense (income), net10.174.2(1.4)(57.8)25.1
Stock-based compensation expense(2)5.85.23.231.345.5
Digital transformation costs(3)36.136.1
Merger-related and integration costs(4)19.319.3
Restructuring costs(5)16.716.7
Adjusted EBITDA$727.4$683.8$739.3$(445.2)$1,705.3
Adjusted EBITDA margin %8.4%9.6%11.2%
(1) The reportable segments do not incur income taxes and interest expense as these costs are centrally controlled through the Corporate tax and treasury functions.
(2) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2023 excludes $2.6 million that is included in merger-related and integration costs.
(3) Digital transformation costs include costs associated with certain digital transformation initiatives.
(4) Merger-related and integration costs include integration and professional fees associated with the integration of Wesco and Anixter, as well as advisory, legal, and separation costs associated with the merger between the two companies.
(5) Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

Note: Adjusted EBITDA and Adjusted EBITDA margin % are non-GAAP financial measures that provide indicators of the Company’s performance and its ability to meet debt service requirements. For the year ended December 31, 2024, Adjusted EBITDA is defined as earnings before interest, taxes, depreciation and amortization before other non-operating expenses (income), non-cash stock-based compensation expense, digital transformation costs, loss on abandonment of assets, cloud computing arrangement amortization, restructuring costs and excise taxes on excess pension plan assets related to the final settlement of the Anixter Inc. Pension Plan. For the year ended December 31, 2023, Adjusted EBITDA is defined as earnings before interest, taxes, depreciation and amortization before other non-operating expenses (income), non-cash stock-based compensation expense, digital transformation costs, merger-related and integration costs, and restructuring costs. Adjusted EBITDA margin % is calculated by dividing Adjusted EBITDA by net sales.

34

Table of Contents

The following tables reconcile selling, general and administrative expenses, income from operations, other non-operating (income) expense, provision for income taxes and earnings per diluted share to adjusted selling, general and administrative expenses, adjusted income from operations, adjusted other non-operating (income) expense, adjusted provision for income taxes and adjusted earnings per diluted share, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31,
20242023
Adjusted SG&A Expenses:(In millions)
Selling, general and administrative expenses$3,306.2$3,256.0
Digital transformation costs(1)(24.9)(36.1)
Loss on abandonment of assets(2)(17.8)
Restructuring costs(3)(12.1)(16.7)
Excise taxes on excess pension plan assets(4)(4.9)
Merger-related and integration costs(5)(19.3)
Adjusted selling, general and administrative expenses$3,246.5$3,183.9
Adjusted Income from Operations:
Income from operations$1,223.2$1,406.4
Digital transformation costs(1)24.936.1
Loss on abandonment of assets(2)17.8
Restructuring costs(3)12.116.7
Excise taxes on excess pension plan assets(4)4.9
Merger-related and integration costs(5)19.3
Accelerated trademark amortization(6)1.6
Adjusted income from operations$1,282.9$1,480.1
Adjusted Other (Income) Expense, net:
Other (income) expense, net$(92.7)$25.1
Gain on divestiture122.2
Loss on termination of business arrangement(7)(3.6)
Pension settlement cost(8)(2.5)(2.8)
Adjusted other (income) expense, net$23.4$22.3
Adjusted Provision for Income Taxes:
Provision for income taxes$231.6$225.9
Income tax effect of adjustments to income from operations and other (income) expense, net(9)(14.8)21.0
Adjusted provision for income taxes$216.8$246.9

(1)    Digital transformation costs include costs associated with certain digital transformation initiatives.

(2)    Loss on abandonment of assets represents the write-off of certain capitalized cloud computing arrangement implementation costs relating to a third-party developed operations management software product in favor of an application with functionality that better suits the Company’s operations.

(3)    Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

(4)    Excise taxes on excess pension plan assets represent the excise taxes applicable to the excess pension plan assets following the final settlement of the Company’s U.S. pension plan.

(5)    Merger-related and integration costs include integration and professional fees associated with the integration of Wesco and Anixter, as well as advisory, legal, and separation costs associated with the merger between the two companies.

(6)    Accelerated trademark amortization represents additional amortization expense resulting from changes in the estimated useful lives of certain legacy trademarks that have migrated to our master brand architecture.

(7)    Loss on termination of business arrangement represents the loss recognized as a result of management’s decision to terminate a business arrangement with a third party.

(8)    For the year ended December 31, 2024, pension settlement cost represents expense related to the settlement of the Company’s U.S. pension plan. For the year ended December 31, 2023, pension settlement cost represents expense related to the partial settlement of the Company’s U.S. pension plan, partially offset by pension settlement gains related to other plans.

(9)    The adjustments to income from operations and other (income) expense, net for the years ended December 31, 2024 and 2023 have been tax effected at rates of 26.2% and 27.5%, respectively.

35

Table of Contents

Year Ended December 31,
Adjusted Earnings Per Diluted Share:20242023
(In millions, except per share data)
Adjusted income from operations$1,282.9$1,480.1
Interest expense, net364.9389.3
Adjusted other expense, net23.422.3
Adjusted income before income taxes894.61,068.5
Adjusted provision for income taxes216.8246.9
Adjusted net income677.8821.6
Net income attributable to noncontrolling interests1.80.6
Adjusted net income attributable to WESCO International, Inc.676.0821.0
Preferred stock dividends57.457.4
Adjusted net income attributable to common stockholders$618.6$763.6
Diluted shares50.652.3
Adjusted earnings per diluted share$12.23$14.60

Note: For the year ended December 31, 2024, SG&A expenses, income from operations, other non-operating (income) expense, the provision for income taxes and earnings per diluted share have been adjusted to exclude digital transformation costs, the loss on abandonment of assets, restructuring costs, excise taxes on excess pension plan assets, the gain recognized on the divestiture of the WIS business, the loss on termination of business arrangement, pension settlement cost, and the related income tax effects. For the year ended December 31, 2023, SG&A expenses, income from operations, other non-operating expense, the provision for income taxes and earnings per diluted share have been adjusted to exclude digital transformation costs, merger-related and integration costs, restructuring costs, accelerated trademark amortization expense, pension settlement cost, and the related income tax effects. These non-GAAP financial measures provide a better understanding of our financial results on a comparable basis.

Liquidity and Capital Resources

Our liquidity needs generally arise from fluctuations in our working capital requirements, information technology investments, capital expenditures, acquisitions, the payment of dividends, and debt service obligations. As of December 31, 2024, we had approximately $1.2 billion in available borrowing capacity under our Revolving Credit Facility, after giving effect to outstanding letters of credit and certain borrowings under our international lines of credit, and $100.0 million of available borrowing capacity under our Receivables Facility, which combined with available cash of $383.0 million, provided liquidity of approximately $1.7 billion. Cash included in our determination of liquidity represents cash in certain deposit and interest-bearing investment accounts held in the United States and Canada. We monitor the depository institutions that hold our cash and cash equivalents on a regular basis, and we believe that we have placed our deposits with creditworthy financial institutions.

As described in Note 9, “Debt” of our Notes to Consolidated Financial Statements, on March 7, 2024, Wesco Distribution issued $900 million aggregate principal amount of 2029 Notes and $850 million aggregate principal amount of 2032 Notes. We used the net proceeds from the issuance of the 2029 and 2032 Notes to redeem the $1,500 million aggregate principal amount of 2025 Notes on June 17, 2024 and for other corporate purposes.

We regularly review our mix of fixed versus variable rate debt, and we may, from time to time, issue or retire borrowings and/or refinance existing debt in an effort to mitigate the impact of interest rate and foreign exchange rate fluctuations, and to maintain a cost-effective capital structure consistent with our anticipated capital requirements. Economic conditions contributed to increases in interest rates during 2023; however, interest rates have remained stable in 2024, and the Federal Reserve reduced its benchmark interest rate by a total of 100 basis points in the second half of 2024. Future interest rate changes would raise or lower the rates we pay on our variable rate debt and would contribute to fluctuations in interest expense versus prior periods.

At December 31, 2024, approximately 60% of our debt portfolio consisted of fixed rate debt. We believe our capital structure has an appropriate mix of fixed versus variable rate debt and secured versus unsecured instruments.

Over the next several quarters, we expect that our excess liquidity will be directed primarily at returning capital to shareholders through our existing share repurchase authorization, the payment of dividends, debt reduction, digital transformation initiatives, potential acquisitions and related integration activities, and/or the redemption of Series A Preferred Stock. We expect to maintain sufficient liquidity through our credit facilities and cash balances. We believe cash provided by operations and financing activities will be adequate to cover our operational and business needs for at least the next twelve months.

36

Table of Contents

We communicate on a regular basis with our lenders regarding our financial and working capital performance, and liquidity position. We were in compliance with all financial covenants and restrictions contained in our debt agreements as of December 31, 2024.

We also measure our ability to meet our debt obligations based on our financial leverage ratio, which was 2.9x as of December 31, 2024 and 2.8x as of December 31, 2023.

The following table sets forth our financial leverage ratio, which is a non-GAAP financial measure, for the periods presented:

Twelve months ended
December 31, 2024December 31, 2023
(In millions of dollars, except ratios)
Net income attributable to common stockholders$660.2$708.1
Net income attributable to noncontrolling interests1.80.6
Preferred stock dividends57.457.4
Provision for income taxes231.6225.9
Interest expense, net364.9389.3
Depreciation and amortization183.2181.3
EBITDA$1,499.1$1,562.6
Other (income) expense, net(92.7)25.1
Stock-based compensation expense28.945.5
Merger-related and integration costs(1)19.3
Restructuring costs(2)12.116.7
Digital transformation costs(3)24.936.1
Excise taxes on excess pension plan assets(4)4.9
Loss on abandonment of assets(5)17.8
Cloud computing arrangement amortization(6)14.1
Adjusted EBITDA$1,509.1$1,705.3
As of
December 31, 2024December 31, 2023
Short-term debt and current portion of long-term debt, net$19.5$8.6
Long-term debt, net5,045.55,313.1
Debt discount and debt issuance costs(7)47.243.0
Fair value adjustments to the Anixter Senior Notes(7)(0.1)(0.1)
Total debt5,112.15,364.6
Less: Cash and cash equivalents702.6524.1
Total debt, net of cash$4,409.5$4,840.5
Financial leverage ratio2.92.8

(1)    Merger-related and integration costs include integration and professional fees associated with the integration of Wesco and Anixter, as well as advisory, legal, and separation costs associated with the merger between the two companies.

(2)    Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

(3)    Digital transformation costs include costs associated with certain digital transformation initiatives, which have historically been included in merger-related and integration costs in prior years.

(4)    Excise taxes on excess pension plan assets represent the excise taxes applicable to the excess pension plan assets following the final settlement of the Company’s U.S. pension plan.

(5)    Loss on abandonment of assets represents the write-off of certain capitalized cloud computing arrangement implementation costs relating to a third-party developed operations management software product in favor of an application with functionality that better suits the Company’s operations.

37

Table of Contents

(6)    Cloud computing arrangement amortization consists of expense recognized in selling, general and administrative expenses for capitalized implementation costs for cloud computing arrangements to support our digital transformation initiatives.

(7)    Debt is presented in the Consolidated Balance Sheets net of debt discount and debt issuance costs, and includes adjustments to record the long-term debt assumed in the merger with Anixter at its acquisition date fair value.

Note: Financial leverage ratio is a non-GAAP measure of the use of debt. Financial leverage ratio is calculated by dividing total debt, excluding debt discount, debt issuance costs and fair value adjustments, net of cash, by adjusted EBITDA. EBITDA is defined as the trailing twelve months earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA is defined as the trailing twelve months EBITDA before other non-operating expense (income), non-cash stock-based compensation expense, merger-related and integration costs, restructuring costs, digital transformation costs, excise taxes on excess pension plan assets related to the final settlement of the Anixter Inc. Pension Plan, loss on abandonment of assets, and cloud computing arrangement amortization.

The undistributed earnings of our foreign subsidiaries amounted to approximately $2,107.7 million at December 31, 2024. Most of these earnings have been taxed in the U.S. under either the one-time tax on the deemed repatriation of undistributed foreign earnings (the “transition tax”), or the global intangible low-taxed income (“GILTI”) tax regime imposed by the Tax Cuts and Jobs Act of 2017. We have elected to pay the transition tax in installments over an eight year period, which ends in 2026. As of December 31, 2024, our remaining liability for the transition tax was $37.7 million. We continue to assert that the remaining undistributed earnings of our foreign subsidiaries are indefinitely reinvested. The distribution of earnings by our foreign subsidiaries in the form of dividends, or otherwise, may be subject to additional taxation. We estimate that additional taxes of approximately $69.4 million would be payable upon the remittance of all previously undistributed foreign earnings as of December 31, 2024, based upon the laws in effect on that date. We believe that we are able to maintain sufficient liquidity for our domestic operations and commitments without repatriating cash from our foreign subsidiaries.

We finance our operating and investing needs primarily with borrowings under our Revolving Credit Facility and Receivables Facility, as well as uncommitted lines of credit entered into by certain of our foreign subsidiaries to support local operations, some of which are overdraft facilities. The Revolving Credit Facility has a borrowing limit of $1,725 million and the purchase limit under the Receivables Facility is $1,550 million. As of December 31, 2024, we had $525.0 million outstanding on the Revolving Credit Facility and $1,450.0 million outstanding under the Receivables Facility. The maximum borrowing limits of our international lines of credit vary by facility and range between $0.6 million and $9.5 million. Our international lines of credit generally are renewable on an annual basis and certain facilities are fully and unconditionally guaranteed by Wesco Distribution. Accordingly, certain borrowings under these lines directly reduce availability under our Revolving Credit Facility. As of December 31, 2024, we had $0.6 million outstanding under our international lines of credit.

For information regarding amendments to the Receivables Facility and Revolving Credit Facility as well as disclosure of our debt instruments, including our outstanding indebtedness as of December 31, 2024, see Note 9, “Debt” of our Notes to Consolidated Financial Statements.

An analysis of cash flows for 2024 and 2023 follows:

Operating Activities

Net cash provided by operating activities for 2024 totaled $1,101.2 million, compared to $493.2 million of cash generated in 2023. Net cash provided by operating activities for 2024 included net income of $719.4 million and non-cash adjustments to net income totaling $105.6 million, which primarily comprised depreciation and amortization, stock-based compensation expense, a loss on abandonment of assets, amortization of debt discount and debt issuance costs, and cloud computing arrangement amortization, partially offset by a gain resulting from the divestiture of our WIS business, as described in Note 5, “Acquisitions and Divestitures” and deferred income taxes.

Other sources of cash in 2024 included an increase in accounts payable of $329.5 million primarily due to the timing of inventory purchases and payment to suppliers, an increase in other current and noncurrent liabilities of $93.3 million, primarily due to increases in federal income taxes payable, accrued interest payable, and operating lease liabilities, and an increase of $62.7 million in accrued payroll and benefits costs, driven by an increase in accrued salaries and wages and the reversion of excess pension plan assets from the settlement of the U.S. pension plan, partially offset by contributions to other pension plans. Primary uses of cash in 2024 included an increase in other current and noncurrent assets of $142.6 million primarily due to increases in capitalized costs associated with developing cloud computing arrangements, supplier prepayments, and contract assets, an increase in trade accounts receivable of $50.7 million due to the timing of receipts from customers, and an increase in inventories of $18.0 million.

Net cash provided by operating activities for 2023 totaled $493.2 million. Net cash provided by operating activities for 2023 included net income of $766.1 million and non-cash adjustments to net income totaling $235.8 million, which primarily comprised depreciation and amortization, stock-based compensation expense, and amortization of debt discount and debt issuance costs, partially offset by deferred income taxes.

38

Table of Contents

Other sources of cash in 2023 included a decrease in trade accounts receivable of $52.2 million due to the timing of receipts from customers and a decrease in net sales in the fourth quarter of 2023 compared to the fourth quarter of the prior year. Primary uses of cash in 2023 included a decrease in accounts payable of $319.7 million primarily due to a reduction in inventory purchases in the fourth quarter, a decrease in accrued payroll and benefit costs of $92.3 million resulting primarily from the payment of management incentive compensation earned in 2022, partially offset by the accrual of management incentive compensation earned in 2023. Net operating cash flow was also negatively impacted by $68.4 million from an increase in inventories. Inventories grew at a slower rate than sales, as supply chain lead times normalized. Uses of cash in 2023 also included an increase in other current and noncurrent assets of $60.6 million primarily due to an increase in capitalized costs associated with developing cloud computing arrangements to support our digital transformation initiatives, as well as a decrease in other current and noncurrent liabilities of $23.5 million.

Investing Activities

Net cash provided by investing activities in 2024 was $40.4 million compared to $89.6 million used in investing activities in 2023. Included in 2024 were $354.9 million in proceeds from the divestiture of the WIS business, net of cash transferred, partially offset by $221.3 million paid to acquire Ascent, entroCIM, IES, net of cash acquired, as well as capital expenditures of $94.7 million compared to $92.3 million in 2023. Capital expenditures in 2024 and 2023 primarily comprised internal-use computer software and information technology hardware to support our digital transformation initiatives, as well as equipment and leasehold improvements to support our global network of distribution centers, fulfillment centers, and sales offices.

Financing Activities

Net cash used in financing activities in 2024 was $928.3 million, compared to $403.9 million in 2023. During 2024, financing activities primarily comprised the redemption of our $1,500 million aggregate principal amount of 2025 Notes, proceeds of $900.0 million and $850.0 million related to the issuance of the 2029 Notes and 2032 Notes, respectively, net repayments of $428.0 million related to our Revolving Credit Facility, net repayments of $100.0 million related to our Receivables Facility, and payment of total debt issuance costs of $26.6 million related to the issuance of the 2029 and 2032 Notes and amendments to the Revolving Credit Facility and Receivables Facility. Financing activities for 2024 also included $425.0 million of common stock repurchases, $81.5 million and $57.4 million of dividends paid to holders of our common stock and Series A Preferred Stock, respectively, and $30.9 million of payments for taxes related to the exercise and vesting of stock-based awards.

During 2023, financing activities primarily comprised net repayments of $70.3 million related to our Revolving Credit Facility and the repayment of our $58.6 million aggregate principal amount of 5.50% Anixter Senior Notes due 2023, partially offset by net borrowings of $15.0 million related to our Receivables Facility. Financing activities for 2023 also included $76.6 million and $57.4 million of dividends paid to holders of our common stock and Series A Preferred Stock, respectively, $75.0 million of common stock repurchases, $68.3 million of payments for taxes related to the exercise and vesting of stock-based awards, and net repayments on our various international lines of credit of approximately $6.0 million.

The following table summarizes our material cash requirements from known contractual and other obligations at December 31, 2024, including interest, and the expected effect on our liquidity and cash flow in future periods:

20252026 to 20272028 to 20292030 - AfterTotal
(In millions)
Debt, excluding debt discount and debt issuance costs$19.5$2,001.4$2,238.1$853.1$5,112.1
Interest on indebtedness(1)319.8557.4233.8127.01,238.0
Non-cancelable operating leases205.2328.4199.9161.7895.2
Transition tax installments24.013.737.7
Defined benefit pension plans(2)7.17.1
Total$575.6$2,900.9$2,671.8$1,141.8$7,290.1

(1)    Interest on variable rate debt was calculated using the rates and balances outstanding at December 31, 2024.

(2)    As disclosed in Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements, the majority of our various defined benefit pension plans are non-contributory and, with the exception of Canada, cover substantially all full-time employees in their respective countries. Retirement benefits are provided based on compensation as defined in the plans. Our policy is to fund these plans as required by local statutory law. We currently estimate that we will contribute $7.1 million to our foreign pension plans in 2025. Due to the future impact of various market conditions, rates of return and changes in plan participants, we cannot provide a meaningful estimate of our future contributions beyond 2025.

39

Table of Contents

In addition to the cash requirements disclosed in the table above, we expect future uses of cash to include working capital requirements, capital expenditures, investments in our digital capabilities, dividend payments to holders of our common stock and Series A Preferred Stock, benefit payments to participants in our deferred compensation plan, and other organic opportunities. Future uses of cash could also include acquisitions of businesses and the repurchase of common or preferred stock. We expect to spend approximately $120 million in 2025 on capital expenditures for information technology investments and to support our global network of distribution centers, fulfillment centers, and sales offices.

We expect to fund future uses of cash with a combination of existing cash balances, cash generated from operating activities, borrowings under our revolving credit and accounts receivable securitization facilities, or new issuances of debt.

Purchase orders for inventory requirements and service contracts are not included in the table above. Generally, our purchase orders and contracts contain clauses allowing for cancellation. We do not have significant agreements to purchase material or goods that would specify minimum order quantities.

Liabilities related to unrecognized tax benefits, including interest and penalties, of $141.0 million were excluded from the table above as we cannot reasonably estimate the timing of these potential cash settlements with taxing authorities. See Note 11, “Income Taxes” of our Notes to Consolidated Financial Statements for further information related to unrecognized tax benefits.

Seasonality

Our operating results are not significantly affected by seasonal factors. Sales during the first and fourth quarters have historically been affected by a reduced level of activity primarily due to the impact of weather on projects. Sales typically increase beginning in March, with slight fluctuations per month through October. During periods of economic expansion or contraction, our sales by quarter have varied significantly from this pattern.

Recent Accounting Standards

See Note 2, “Accounting Policies” of our Notes to Consolidated Financial Statements for a description of recently adopted and recently issued accounting standards.

FY 2023 10-K MD&A

SEC filing source: 0000929008-24-000005.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2024-02-20. Report date: 2023-12-31.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the audited consolidated financial statements and notes thereto included in Item 8 of this Annual Report on Form 10-K. The matters discussed herein may contain forward-looking statements that are subject to certain risks and uncertainties that could cause actual results to differ materially from expectations. Certain of these risks are set forth in Item 1A of this Annual Report on Form 10-K. In this Item 7, “Wesco” refers to WESCO International, Inc., and its subsidiaries and its predecessors unless the context otherwise requires. References to “we,” “us,” “our” and the “Company” refer to Wesco and its subsidiaries.

In addition to the results provided in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), our discussion and analysis of financial condition and results of operations includes certain non-GAAP financial measures, which are defined further below. These financial measures include organic sales growth, earnings before interest, taxes, depreciation and amortization (“EBITDA”), adjusted EBITDA, adjusted EBITDA margin, financial leverage, adjusted selling, general and administrative expenses, adjusted income from operations, adjusted other non-operating expense (income), adjusted provision for income taxes, adjusted income before income taxes, adjusted net income, adjusted net income attributable to WESCO International, Inc., adjusted net income attributable to common stockholders, and adjusted earnings per diluted share. We believe that these non-GAAP measures are helpful to users of our financial statements as they provide a better understanding of our financial condition and results of operations on a comparable basis. Additionally, certain non-GAAP measures either focus on or exclude items impacting comparability of results, allowing users to more easily compare our financial performance from period to period. Management uses certain non-GAAP financial measures in its evaluation of the performance of the Company's operating segments and in the determination of incentive compensation. Management does not use these non-GAAP financial measures for any purpose other than the reasons stated above.

In the first quarter of the fiscal year ended December 31, 2023, we changed our presentation in tables from thousands to millions. Certain amounts as of and for the year ended December 31, 2022 in Management’s Discussion and Analysis of Financial Condition and Results of Operations may not foot or recalculate due to rounding.

Company Overview

Wesco, headquartered in Pittsburgh, Pennsylvania, is a leading provider of business-to-business distribution, logistics services and supply chain solutions.

We employ approximately 20,000 people, maintain relationships with more than 50,000 suppliers, and serve nearly 150,000 customers worldwide. With millions of products, end-to-end supply chain services, and leading digital capabilities, we provide innovative solutions to meet customer needs across commercial and industrial businesses, contractors, government agencies, educational institutions, telecommunications providers, and utilities. Our innovative value-added solutions include supply chain management, logistics and transportation, procurement, warehousing and inventory management, as well as kitting and labeling, limited assembly of products and installation enhancement. We operate nearly 800 branches, warehouses and sales offices in approximately 50 countries, providing a local presence for customers and a global network to serve multi-location businesses and global corporations.

In 2021, we established a new corporate brand strategy to adopt a single, master brand architecture. This initiative reflects our corporate integration strategy and simplifies engagement for our customers and suppliers. In 2022, we launched the master brand identity in North America and began migrating certain legacy sub-brands to the master brand architecture, a process that will continue for the next several years. In 2023, we launched the Wesco Anixter go-to-market brand in all markets outside of the U.S. and Canada, as part of our master brand deployment strategy. Due to the strength of its recognition with customers and suppliers, we will continue to use the Anixter brand name globally for the foreseeable future.

We have operating segments comprising three strategic business units consisting of Electrical & Electronic Solutions (“EES”), Communications & Security Solutions (“CSS”) and Utility & Broadband Solutions (“UBS”). These operating segments are equivalent to our reportable segments. See Item 1, “Business” in this Annual Report on Form 10-K for a description of each of our reportable segments and their business activities.

Overall Financial Performance

Our financial results for 2023 compared to 2022 reflect single-digit sales growth driven by the benefits of price inflation, increased scale, and secular demand trends. These impacts were partially offset by volume declines in certain businesses, as well as slight margin contraction, and higher payroll and payroll-related expenses, costs to operate our facilities, along with expenses associated with our digital transformation initiatives.

Net sales for 2023 increased $965.1 million, or 4.5%, over the prior year. The increase reflects the estimated impact of changes in price of approximately 3% and the favorable impact of 2.1% from the acquisition of Rahi Systems Holdings, Inc. (“Rahi Systems”), which closed in November of 2022. These positive factors were partially offset by the negative impacts of

25

Table of Contents

fluctuations in foreign exchange rates of 0.4% and the number of workdays of 0.4%. Volume growth did not have a material impact on the year-over-year increase in organic sales. Cost of goods sold as a percentage of net sales was 78.4% and 78.2% for 2023 and 2022, respectively. The unfavorable increase of 20 basis points reflects lower supplier volume rebates and a shift in sales mix, partially offset by our continued focus on a strategy of pricing products and services to realize the value that we provide to our customers as a result of our broad portfolio of product and service offerings, global footprint and capabilities (“value-driven pricing”).

Income from operations was $1,406.4 million for 2023, compared to $1,438.1 million for 2022, a decrease of $31.7 million, or 2.2%. Income from operations as a percentage of net sales was 6.3% for the current year, compared to 6.7% for the prior year. Income from operations for 2023 includes merger-related and integration costs of $55.4 million, restructuring costs of $16.7 million, and accelerated trademark amortization expense of $1.6 million. Adjusted for these items, income from operations was 6.6% of net sales in 2023. For 2022, income from operations was 7.1% of net sales, as adjusted for merger-related and integration costs of $67.4 million and accelerated trademark amortization expense of $9.8 million. For 2023, income from operations declined compared to the prior year due to higher cost of goods sold as a percentage of net sales, higher salaries and benefits due to wage inflation and increased headcount, including the impact of the Rahi Systems acquisition, as well as an increase in volume-related costs such as commissions and marketing costs. The costs to operate our facilities also unfavorably affected income from operations. In addition, digital transformation initiatives contributed to higher expenses in 2023. These negative factors were partially offset by sales growth as well as the realization of integration synergies and a reduction to incentive compensation expense.

Earnings per diluted share for 2023 was $13.54, based on 52.3 million diluted shares, compared to $15.33 for 2022, based on 52.4 million diluted shares, a decrease of 11.7%. Adjusted for merger-related and integration costs, restructuring costs, accelerated trademark amortization expense, net pension settlement cost, and the related income tax effects, earnings per diluted share for 2023 was $14.60. Adjusted for merger-related and integration costs, accelerated trademark amortization expense, and the related income tax effects, earnings per diluted share for 2022 was $16.42. Adjusted earnings per diluted share decreased 11.1% year-over-year.

Our industry and the broader economy have experienced supply chain challenges, including product delays and backlogged orders, shortages in raw materials and components, labor shortages, transportation challenges, and higher costs. We have aggressively responded to these supply chain issues which have largely improved and progressively become manageable throughout 2023.

Cash Flow

Operating cash flow for 2023 was $493.2 million. Net cash provided by operating activities included net income of $766.1 million and non-cash adjustments to net income totaling $235.8 million, which primarily consisted of depreciation and amortization of $181.3 million, stock-based compensation expense of $48.1 million, amortization of debt discount and debt issuance costs of $14.8 million, and deferred income taxes of $7.9 million. Operating cash flow was negatively impacted by net changes in assets and liabilities of $508.7 million, which primarily consisted of a decrease in accounts payable of $319.7 million, mainly due to a reduction in inventory purchases in the fourth quarter, and an increase in inventories of $68.4 million. Inventories grew at a slower rate than sales, as supply chain lead times have normalized. These cash usage factors were partially offset by cash inflow from a decrease in trade accounts receivable of $52.2 million. Additionally, the payment of management incentive compensation earned in 2022 resulted in a cash outflow of approximately $153.9 million in 2023, which was partially offset by the accrual of management incentive compensation earned in the current year.

Investing activities primarily included $92.3 million of capital expenditures mostly consisting of internal-use computer software and information technology hardware to support our digital transformation initiatives, as well as equipment and leasehold improvements to support our global network of branches, warehouses and sales offices.

Financing activities primarily consisted of net repayments of $70.3 million related to our revolving credit facility (the “Revolving Credit Facility”) and the repayment of our $58.6 million aggregate principal amount of 5.50% Anixter Senior Notes due 2023, which matured on March 1, 2023, partially offset by net borrowings of $15.0 million related to our accounts receivable securitization facility (the “Receivables Facility”). Financing activities for 2023 also included $76.6 million and $57.4 million of dividends paid to holders of our common stock and Series A Preferred Stock, respectively, $75.0 million of common stock repurchases, and $68.3 million of payments for taxes related to the exercise and vesting of stock-based awards.

26

Table of Contents

Financing Availability

As of December 31, 2023, we had $736.0 million in total available borrowing capacity under our Revolving Credit Facility and $75.0 million of available borrowing capacity under our Receivables Facility. The Revolving Credit Facility and the Receivables Facility mature in March 2027 and March 2025, respectively. As of December 31, 2023, we also had $8.2 million of borrowing capacity available under our international lines of credit that did not directly reduce availability under the Revolving Credit Facility.

Critical Accounting Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates that involve a significant level of estimation uncertainty and have had or are reasonably likely to have a material impact on the financial condition or results of operations, including those related to goodwill and indefinite-lived intangible assets, defined benefit pension plans, and income taxes. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. If actual market conditions are less favorable than those projected by management, additional adjustments to reserve items may be required. We believe the following accounting estimates are the most critical to the understanding of our consolidated financial statements as they require subjective or complex judgments by management.

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and indefinite-lived intangible assets are tested for impairment annually as of October 1, or more frequently if triggering events occur, indicating that their carrying values may not be recoverable. We test for goodwill impairment on a reporting unit level. We performed our annual impairment tests of goodwill and indefinite-lived intangible assets during the fourth quarter of 2023 by assessing qualitative factors to determine whether it was more likely than not that the fair values of our reporting units and indefinite-lived intangible assets were less than their respective carrying amounts. As a result of this assessment, we determined that it was more likely than not that the fair values of our reporting units and indefinite-lived intangible assets continued to exceed their respective carrying amounts and, therefore, a quantitative impairment test was not necessary.

The determination of fair value involves significant management judgment, particularly as it relates to the underlying assumptions and factors around future expected operating margins and discount rate. Management applies its best judgment when assessing the reasonableness of financial projections. Fair values are sensitive to changes in underlying assumptions and factors. As a result, there can be no assurance that the estimates and assumptions made for purposes of the annual goodwill and indefinite-lived intangible impairment tests will prove to be an accurate prediction of future results.

See Note 2, “Accounting Policies” and Note 5, “Goodwill and Intangible Assets” of our Notes to Consolidated Financial Statements for additional disclosure regarding goodwill and indefinite-lived intangible assets.

Defined Benefit Pension Plans

Liabilities and expenses for defined benefit pension plans are determined using actuarial methodologies and incorporate significant assumptions, including the interest rate used to discount the future estimated cash flows, the expected long-term rate of return on plan assets, and several assumptions relating to the employee workforce (salary increases, retirement age, and mortality).

Liabilities for defined benefit pension plans are particularly sensitive to changes in the discount rate. At the end of each fiscal year, we determine the discount rate to measure our defined benefit pension plan liabilities at their present value. The discount rate reflects the current rate at which the defined benefit pension plan liabilities could be effectively settled at the end of the year. This rate is estimated using a yield curve based on corporate bond data, which we believe is consistent with observable market conditions and industry standards for developing spot rate curves. The consolidated weighted-average discount rate used to measure the projected benefit obligation of all plans was 4.4% and 4.6% at December 31, 2023 and 2022, respectively. As a sensitivity measure, the effect of a 50-basis-point decline in the assumed discount rate would result in no change in the expense for 2024, and an increase in our projected benefit obligations at December 31, 2023 of $31.0 million. The impact of a 50-basis-point increase in the assumed discount rate would result in a decrease in the expense for 2024 of approximately $1.0 million, and a decrease in our projected benefit obligations at December 31, 2023 of $29.0 million. Changes in the expected long-term rate of return on plan assets and assumptions relating to the employee workforce are less likely to have a material impact on the measurement of defined benefit pension plan liabilities.

27

Table of Contents

See Note 2, “Accounting Policies” and Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements for additional disclosure regarding defined benefit pension plans.

Income Taxes

We recognize deferred tax assets consistent with amounts expected to be realized. To make such determination, management evaluates all positive and negative evidence, including but not limited to, prior, current and future taxable income, tax planning strategies and future reversals of existing taxable temporary differences. A valuation allowance is recognized if it is “more-likely-than-not” that some or all of a deferred tax asset will not be realized. We regularly assess the realizability of deferred tax assets.

We account for uncertainty in income taxes using a “more-likely-than-not” recognition threshold. Due to the subjectivity inherent in the evaluation of uncertain tax positions, the tax benefit ultimately recognized may materially differ from the estimate recognized in the consolidated financial statements. We recognize interest and penalties related to uncertain tax benefits as part of interest expense and income tax expense, respectively.

See Note 2, “Accounting Policies” and Note 11, “Income Taxes” of our Notes to Consolidated Financial Statements for additional disclosure regarding income taxes.

Results of Operations

2023 Compared to 2022

Net Sales

The following table sets forth net sales and organic sales growth for the periods presented:

Year Ended December 31,Growth/(Decline)
20232022ReportedAcquisitionForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$22,385.2$21,420.14.5%2.1%(0.4)%(0.4)%3.2%

Note: Organic sales growth is a non-GAAP financial measure of sales performance. Organic sales growth is calculated by deducting the percentage impact from acquisitions and divestitures for one year following the respective transaction, fluctuations in foreign exchange rates and number of workdays from the reported percentage change in consolidated net sales. Workday impact represents the change in the number of operating days period-over-period after adjusting for weekends and public holidays in the United States; 2023 had one less workday compared to 2022.

Net sales were $22.4 billion for 2023 compared with $21.4 billion for 2022, an increase of 4.5%. Adjusting for the favorable impact from the acquisition of Rahi Systems of 2.1%, the unfavorable impacts from fluctuations in foreign exchange rates of 0.4% and the number of workdays of 0.4%, organic sales for 2023 grew by 3.2%. The increase was primarily due to the impact of changes in price, which favorably impacted organic sales by approximately 3%. Volume growth did not have a material impact on the year-over-year increase in organic sales, as increases in sales volume in the CSS and UBS operating segments were offset by a decrease in sales volume in the EES segment.

Cost of Goods Sold

Cost of goods sold for 2023 was $17.5 billion compared to $16.8 billion for 2022. Cost of goods sold as a percentage of net sales was 78.4% and 78.2% for 2023 and 2022, respectively. The unfavorable increase of 20 basis points reflects a shift in sales mix and lower supplier volume rebates, partially offset by our continued focus on a strategy of pricing products and services to realize the value that we provide to our customers as a result of our broad portfolio of product and service offerings, global footprint and capabilities (“value-driven pricing”).

Selling, General and Administrative Expenses

Selling, general and administrative (“SG&A”) expenses primarily include payroll and payroll-related costs, shipping and handling, travel and entertainment, facilities, utilities, information technology expenses, professional and consulting fees, credit losses, gains (losses) on the sale of property and equipment, as well as real estate and personal property taxes. SG&A expenses for 2023 totaled $3.3 billion versus $3.0 billion for 2022, an increase of 7.0%. As a percentage of net sales, SG&A expenses were 14.5% and 14.2% for 2023 and 2022, respectively. SG&A expenses for 2023 and 2022 include merger-related and integration costs of $55.4 million and $67.4 million, respectively. SG&A expenses for 2023 also include $16.7 million of restructuring costs. Adjusted for merger-related and integration costs, and restructuring costs, SG&A expenses for 2023 were 14.2% of net sales for 2023 and 13.9% of net sales for 2022.

28

Table of Contents

SG&A payroll and payroll-related expenses for 2023 of $2.1 billion increased by $89.4 million compared to 2022 as a result of higher salaries and benefits due to wage inflation and increased headcount, including the impact of the Rahi Systems acquisition, partially offset by the impact of headcount reductions taken at the end of the second quarter of 2023. This increase in payroll and payroll-related expenses also includes an increase in sales commissions of $31.9 million and a reduction to incentive compensation expense of $98.3 million.

SG&A expenses not related to payroll and payroll-related costs for 2023 were $1.2 billion, an increase of $122.4 million compared to 2022, which primarily reflects higher costs to operate our facilities of $49.2 million, increased marketing costs of $11.5 million, as well as higher employee expenses of $6.6 million due to increased headcount. In addition, digital transformation initiatives contributed to higher expenses of $22.4 million in 2023, which includes higher professional and consulting expenses. These increases were partially offset by the realization of integration cost synergies.

Depreciation and Amortization

Depreciation and amortization increased $2.3 million to $181.3 million for 2023, compared to $179.0 million for 2022. Depreciation and amortization for 2023 and 2022 includes $1.6 million and $9.8 million, respectively, of accelerated amortization expense resulting from changes in the estimated useful lives of certain legacy trademarks that are migrating to our master brand architecture.

Income from Operations

Income from operations was $1,406.4 million for 2023 compared to $1,438.1 million for 2022. The decrease of $31.7 million, or 2.2%, reflects slightly higher cost of goods sold as a percentage of net sales and higher SG&A expenses, as described above, partially offset by sales growth and the realization of integration synergies.

Interest Expense, net

Net interest expense totaled $389.3 million for 2023 compared to $294.4 million for 2022. The increase of $94.9 million, or 32.2%, reflects higher borrowings and an increase in variable interest rates.

Other Expense, net

Other non-operating expense totaled $25.1 million for 2023 compared to $7.0 million for 2022. Due to fluctuations in the U.S. dollar against certain foreign currencies, particularly the Argentine Peso and the Egyptian Pound, a net foreign currency exchange loss of $22.9 million was recognized for 2023 compared to a net loss of $19.9 million for 2022. We recognized net costs of $0.2 million and net benefits of $14.8 million associated with the non-service cost components of net periodic pension cost (benefit) for 2023 and 2022, respectively. The year-over-year change was primarily due to a decrease in expected return on plan assets and an increase in interest cost. Other non-operating expense for 2023 includes net pension settlement cost of $2.8 million primarily related to the partial settlement of the Company's pension plan in the U.S., partially offset by pension settlement gains related to other plans. Adjusted for this amount, other non-operating expense was $22.3 million for 2023.

Income Taxes

The provision for income taxes was $225.9 million for 2023 compared to $274.5 million for 2022, resulting in effective tax rates of 22.8% and 24.2%, respectively. The effective tax rate for both the current year and the prior year were favorably impacted by the tax benefits related to the exercise and vesting of stock-based awards and reductions in the valuation allowance recorded against certain deferred tax assets. The lower effective tax rate in the current year is due primarily to higher tax benefits from stock-based compensation deductions and foreign tax credit utilization as compared to the prior year.

Net Income and Earnings per Share

Net income and earnings per diluted share attributable to common stockholders were $708.1 million and $13.54, respectively, for 2023 compared to $803.1 million and $15.33, respectively, for 2022. Adjusted for merger-related and integration costs, restructuring costs, accelerated trademark amortization expense, net pension settlement cost, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $763.6 million and $14.60, respectively, for the year ended December 31, 2023. Adjusted for merger-related and integration costs, accelerated trademark amortization expense, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $860.1 million and $16.42, respectively, for the year ended December 31, 2022.

Adjusted EBITDA

Adjusted EBITDA, a non-GAAP financial measure, was $1,705.3 million for 2023 compared to $1,725.6 million for 2022. Adjusted EBITDA decreased $20.3 million, or 1.2% year-over-year. The decrease primarily reflects the $211.8 million increase in SG&A expenses, as well as the increase in cost of goods sold of $782.7 million, partially offset by the $1.0 billion increase in net sales, as described above. Included in the increase in SG&A expenses was restructuring costs of $16.7 million, partially offset by a decrease in merger-related and integration costs of $12.0 million.

29

Table of Contents

Segment Results

The following is a discussion of the financial results of our operating segments comprising three strategic business units consisting of EES, CSS and UBS for the year ended December 31, 2023. As further described below and in Note 16, “Business Segments” of our Notes to the Consolidated Financial Statements, the performance of our operating segments is based on net sales, adjusted EBITDA, and adjusted EBITDA margin percentage. Adjusted EBITDA and adjusted EBITDA margin percentage are non-GAAP financial measures.

Electrical & Electronic Solutions

Year Ended December 31,Growth/(Decline)
20232022ReportedAcquisitionForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$8,610.3$8,823.3(2.4)%%(0.6)%(0.4)%(1.4)%
Adjusted EBITDA$727.4$851.3
Adjusted EBITDA margin %8.4%9.6%

EES reported net sales of $8.6 billion for 2023 compared to $8.8 billion for 2022, a decrease of 2.4%. Adjusting for the unfavorable impact from fluctuations in foreign exchange rates of 0.6% and the number of workdays of 0.4%, EES organic sales for 2023 declined 1.4%, reflecting volume declines of approximately 2%, primarily as a result of declines in construction and original equipment manufacturers, partially offset by continued positive momentum in industrial and the benefits of selling the broader company portfolio (“cross selling”). In addition, a transfer of certain customer accounts to the CSS segment negatively impacted organic net sales for EES by approximately 2%. These negative factors were partially offset by the impact of changes in price, which favorably impacted organic sales by approximately 3%.

EES reported adjusted EBITDA of $727.4 million for 2023, or 8.4% of net sales, compared to $851.3 million for 2022, or 9.6% of net sales. Adjusted EBITDA decreased $123.9 million, or 14.6% year-over-year. The decrease primarily reflects the decline in net sales, as described above, and an increase in SG&A expenses as a percentage of net sales, partially offset by a decrease in cost of goods sold of $131.8 million, which is inclusive of higher inventory write-downs and lower supplier volume rebates totaling approximately $28.7 million and the negative impact of a shift in sales mix. SG&A expenses increased $41.6 million as compared to the prior year, which was primarily attributed to higher payroll and payroll-related expenses of $43.6 million as a result of higher salaries due to wage inflation and increased headcount. This increase in payroll and payroll-related expenses also includes a reduction to incentive compensation expense of $31.4 million.

30

Table of Contents

Communications & Security Solutions

Year Ended December 31,Growth/(Decline)
20232022ReportedAcquisitionForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$7,152.2$6,401.511.7%7.1%(0.4)%(0.4)%5.4%
Adjusted EBITDA$683.8$599.0
Adjusted EBITDA margin %9.6%9.4%

CSS reported net sales of $7.2 billion for 2023 compared to $6.4 billion for 2022, an increase of 11.7%. Adjusting for the favorable impact from the acquisition of Rahi Systems of 7.1%, the unfavorable impacts from fluctuations in foreign exchange rates of 0.4% and the number of workdays of 0.4%, CSS organic sales for 2023 grew 5.4%, reflecting the impact of changes in price, which favorably impacted organic sales by approximately 1%. Volume growth, which includes growth in data center, security solutions and enterprise network infrastructure and the benefits of cross selling, favorably impacted organic sales by approximately 1%. The transfer of certain customer accounts from the EES segment also positively impacted organic net sales for CSS by approximately 3%.

CSS reported adjusted EBITDA of $683.8 million for 2023, or 9.6% of net sales, compared to $599.0 million for 2022, or 9.4% of net sales. Adjusted EBITDA increased $84.8 million, or 14.2% year-over-year. The increase primarily reflects the increase in net sales, as described above, partially offset by a corresponding increase in cost of goods sold of $580.2 million. SG&A expenses increased $90.5 million as compared to the prior year, which was primarily attributed to higher payroll and payroll-related expenses of $45.1 million as a result of higher salaries due to wage inflation and increased headcount, including the impact of the Rahi Systems acquisition. This increase in payroll and payroll-related expenses also includes an increase in sales commissions of $26.1 million and a reduction to incentive compensation expense of $29.9 million. Additionally, higher costs to operate our facilities of $15.9 million, higher marketing costs of $6.8 million due to increased sales volume, and higher employee expenses of $5.9 million due to increased headcount contributed to the year-over-year increase in SG&A expenses.

Utility & Broadband Solutions

Year Ended December 31,Growth/(Decline)
20232022ReportedAcquisitionForeign ExchangeWorkdayOrganic Sales
(In millions)
Net sales$6,622.7$6,195.36.9%%(0.2)%(0.4)%7.5%
Adjusted EBITDA$739.3$677.3
Adjusted EBITDA margin %11.2%10.9%

UBS reported net sales of $6.6 billion for 2023 compared to $6.2 billion for 2022, an increase of 6.9%. Adjusting for the unfavorable impacts of fluctuations in foreign exchange rates of 0.2% and the number of workdays of 0.4%, UBS organic sales for 2023 grew 7.5%, reflecting the impact of changes in price, which favorably impacted organic sales by approximately 6%. Volume growth, which includes growth in utility and integrated supply, and the benefits of cross selling, partially offset by lower sales in broadband, particularly in Canada, favorably impacted organic sales by approximately 2%.

UBS reported adjusted EBITDA of $739.3 million for 2023, or 11.2% of net sales, compared to $677.3 million for 2022, or 10.9% of net sales. Adjusted EBITDA increased $62.0 million, or 9.2% year-over-year. The increase primarily reflects the $427.4 million increase in net sales, as described above, partially offset by a corresponding increase in cost of goods sold of $334.4 million. SG&A expenses increased $31.2 million as compared to the prior year, which was primarily attributed to higher payroll and payroll-related expenses of $13.2 million as a result of higher salaries due to wage inflation and increased headcount. This increase in payroll and payroll-related expenses includes a reduction to incentive compensation expense of $6.5 million and a decrease in sales commissions of $1.1 million. Additionally, higher costs to operate our facilities of $13.9 million and increased transportation costs of $4.1 million as a result of sales growth, contributed to the year-over-year increase in SG&A expenses.

31

Table of Contents

The following tables reconcile net income attributable to common stockholders to adjusted EBITDA and adjusted EBITDA margin % by segment, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31, 2023
(In millions)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$668.7$531.1$712.5$(1,204.2)$708.1
Net (loss) income attributable to noncontrolling interests(0.5)1.6(0.5)0.6
Preferred stock dividends57.457.4
Provision for income taxes(1)225.9225.9
Interest expense, net(1)389.3389.3
Depreciation and amortization43.371.725.041.3181.3
Other expense (income), net10.174.2(1.4)(57.8)25.1
Stock-based compensation expense(2)5.85.23.231.345.5
Merger-related and integration costs(3)55.455.4
Restructuring costs(4)16.716.7
Adjusted EBITDA$727.4$683.8$739.3$(445.2)$1,705.3
Adjusted EBITDA margin %8.4%9.6%11.2%
(1) The reportable segments do not incur income taxes and interest expense as these costs are centrally controlled through the Corporate tax and treasury functions.
(2) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2023 excludes $2.6 million that is included in merger-related and integration costs.
(3) Merger-related and integration costs include integration and professional fees associated with the integration of Wesco and Anixter, including digital transformation costs, as well as advisory, legal, and separation costs associated with the merger between the two companies.
(4) Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

32

Table of Contents

Year Ended December 31, 2022
(In millions)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$801.3$527.0$648.5$(1,173.7)$803.1
Net income attributable to noncontrolling interests0.21.51.7
Preferred stock dividends57.457.4
Provision for income taxes(1)274.5274.5
Interest expense, net(1)294.4294.4
Depreciation and amortization42.668.423.344.7179.0
Other (income) expense, net(2.0)(1.3)2.08.37.0
Stock-based compensation expense(2)9.24.93.523.441.0
Merger-related and integration costs(3)67.467.4
Adjusted EBITDA$851.3$599.0$677.3$(401.9)$1,725.6
Adjusted EBITDA margin %9.6%9.4%10.9%
(1) The reportable segments do not incur income taxes and interest expense as these costs are centrally controlled through the Corporate tax and treasury functions.
(2) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2022 excludes $5.4 million that is included in merger-related and integration costs.
(3) Merger-related and integration costs include integration and professional fees associated with the integration of Wesco and Anixter, including digital transformation costs, as well as advisory, legal, and separation costs associated with the merger between the two companies.

Note: Adjusted EBITDA and Adjusted EBITDA margin % are non-GAAP financial measures that provide indicators of our performance and ability to meet debt service requirements. Adjusted EBITDA is defined as earnings before interest, taxes, depreciation and amortization before other non-operating expenses (income), non-cash stock-based compensation expense, merger-related and integration costs, and restructuring costs. Adjusted EBITDA margin % is calculated by dividing Adjusted EBITDA by net sales.

33

Table of Contents

The following tables reconcile selling, general and administrative expenses, income from operations, other non-operating expense, provision for income taxes and earnings per diluted share to adjusted selling, general and administrative expenses, adjusted income from operations, adjusted other non-operating expense, adjusted provision for income taxes and adjusted earnings per diluted share, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31,
20232022
Adjusted SG&A Expenses:(In millions)
Selling, general and administrative expenses$3,256.0$3,044.2
Merger-related and integration costs(1)(55.4)(67.4)
Restructuring costs(2)(16.7)
Adjusted selling, general and administrative expenses$3,183.9$2,976.8
Adjusted Income from Operations:
Income from operations$1,406.4$1,438.1
Merger-related and integration costs(1)55.467.4
Restructuring costs(2)16.7
Accelerated trademark amortization(3)1.69.8
Adjusted income from operations$1,480.1$1,515.3
Adjusted Other Expense, net:
Other expense, net$25.1$7.0
Pension settlement cost(4)(2.8)
Adjusted other expense, net$22.3$7.0
Adjusted Provision for Income Taxes:
Provision for income taxes$225.9$274.5
Income tax effect of adjustments to income from operations(5)21.020.2
Adjusted provision for income taxes$246.9$294.7

(1)    Merger-related and integration costs include integration and professional fees associated with the integration of Wesco and Anixter, including digital transformation costs, as well as advisory, legal, and separation costs associated with the merger between the two companies.

(2)    Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

(3)    Accelerated trademark amortization represents additional amortization expense resulting from changes in the estimated useful lives of certain legacy trademarks that are migrating to our master brand architecture.

(4)    Pension settlement cost represents expense related to the partial settlement of the Company's pension plan in the U.S., partially offset by pension settlement gains related to other plans.

(5)    The adjustments to income from operations for the years ended December 31, 2023 and 2022 have been tax effected at rates of 27.5% and 26.1%, respectively.

34

Table of Contents

Year Ended December 31,
Adjusted Earnings Per Diluted Share:20232022
(In millions, except per share data)
Adjusted income from operations$1,480.1$1,515.3
Interest expense, net389.3294.4
Adjusted other expense, net22.37.0
Adjusted income before income taxes1,068.51,213.9
Adjusted provision for income taxes246.9294.7
Adjusted net income821.6919.2
Net income attributable to noncontrolling interests0.61.7
Adjusted net income attributable to WESCO International, Inc.821.0917.5
Preferred stock dividends57.457.4
Adjusted net income attributable to common stockholders$763.6$860.1
Diluted shares52.352.4
Adjusted earnings per diluted share$14.60$16.42

Note: For the year ended December 31, 2023, SG&A expenses, income from operations, other non-operating expense, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, restructuring costs, accelerated amortization expense associated with migrating to our master brand architecture, net pension settlement cost primarily related to the partial settlement of the Company's pension plan in the U.S., partially offset by pension settlement gains related to other plans, and the related income tax effects. For the year ended December 31, 2022, SG&A expenses, income from operations, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, accelerated trademark amortization expense associated with migrating to our master brand architecture, and the related income tax effects. These non-GAAP financial measures provide a better understanding of our financial results on a comparable basis.

Liquidity and Capital Resources

Our liquidity needs generally arise from fluctuations in our working capital requirements, information technology investments, capital expenditures, acquisitions, the payment of dividends, and debt service obligations. As of December 31, 2023, we had $736.0 million in available borrowing capacity under our Revolving Credit Facility, after giving effect to outstanding letters of credit and certain borrowings under our international lines of credit, and $75.0 million in available borrowing capacity under our Receivables Facility, which combined with available cash of $250.1 million, provided liquidity of $1.1 billion. Cash included in our determination of liquidity represents cash in certain deposit and interest-bearing investment accounts. We monitor the depository institutions that hold our cash and cash equivalents on a regular basis, and we believe that we have placed our deposits with creditworthy financial institutions.

We regularly review our mix of fixed versus variable rate debt, and we may, from time to time, issue or retire borrowings and/or refinance existing debt in an effort to mitigate the impact of interest rate and foreign exchange rate fluctuations, and to maintain a cost-effective capital structure consistent with our anticipated capital requirements. Economic conditions contributed to increases in interest rates during 2023 and 2022. Further increases will raise the rates we pay on our variable rate debt and will contribute to higher interest expense versus prior periods.

At December 31, 2023, approximately 53% of our debt portfolio consisted of fixed rate debt. We believe our capital structure has an appropriate mix of fixed versus variable rate debt and secured versus unsecured instruments.

Over the next several quarters, we expect that our excess liquidity will be directed primarily at debt reduction, digital transformation initiatives, returning capital to shareholders through the payment of dividends and our existing share repurchase authorization, or potential acquisitions and related integration activities. We expect to maintain sufficient liquidity through our credit facilities and cash balances. We believe cash provided by operations and financing activities will be adequate to cover our operational and business needs for at least the next twelve months.

We communicate on a regular basis with our lenders regarding our financial and working capital performance, and liquidity position. We were in compliance with all financial covenants and restrictions contained in our debt agreements as of December 31, 2023.

We also measure our ability to meet our debt obligations based on our financial leverage ratio, which was 2.8x as of December 31, 2023 and 2.9x as of December 31, 2022.

35

Table of Contents

The following table sets forth our financial leverage ratio, which is a non-GAAP financial measure, for the periods presented:

Twelve months ended
December 31, 2023December 31, 2022
(In millions of dollars, except ratios)
Net income attributable to common stockholders$708.1$803.1
Net income attributable to noncontrolling interests0.61.7
Preferred stock dividends57.457.4
Provision for income taxes225.9274.5
Interest expense, net389.3294.4
Depreciation and amortization181.3179.0
EBITDA$1,562.6$1,610.1
Other expense, net25.17.0
Stock-based compensation expense45.541.0
Merger-related and integration costs(1)55.467.4
Restructuring costs(2)16.7
Adjusted EBITDA$1,705.3$1,725.6
As of
December 31, 2023December 31, 2022
Short-term debt and current portion of long-term debt, net$8.6$70.5
Long-term debt, net5,313.15,346.0
Debt discount and debt issuance costs(3)43.057.9
Fair value adjustments to Anixter Senior Notes due 2023 and 2025(3)(0.1)(0.3)
Total debt5,364.65,474.1
Less: Cash and cash equivalents524.1527.3
Total debt, net of cash$4,840.5$4,946.8
Financial leverage ratio2.82.9

(1)    Merger-related and integration costs include integration and professional fees associated with the integration of Wesco and Anixter, including digital transformation costs, as well as advisory, legal, and separation costs associated with the merger between the two companies.

(2)    Restructuring costs include severance costs incurred pursuant to an ongoing restructuring plan.

(3)    Debt is presented in the Consolidated Balance Sheets net of debt discount and debt issuance costs, and includes adjustments to record the long-term debt assumed in the merger with Anixter at its acquisition date fair value.

Note: Financial leverage ratio is a non-GAAP measure of the use of debt. Financial leverage ratio is calculated by dividing total debt, excluding debt discount, debt issuance costs and fair value adjustments, net of cash, by adjusted EBITDA. EBITDA is defined as the trailing twelve months earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA is defined as the trailing twelve months EBITDA before other non-operating expense (income), non-cash stock-based compensation expense, merger-related and integration costs, and restructuring costs.

The undistributed earnings of our foreign subsidiaries amounted to approximately $2,194.1 million at December 31, 2023. Most of these earnings have been taxed in the U.S. under either the one-time tax on the deemed repatriation of undistributed foreign earnings (the “transition tax”), or the global intangible low-taxed income (“GILTI”) tax regime imposed by the Tax Cuts and Jobs Act of 2017. We have elected to pay the transition tax in installments over an eight year period, which ends in 2026. As of December 31, 2023, our remaining liability for the transition tax was $53.8 million. We continue to assert that the remaining undistributed earnings of our foreign subsidiaries are indefinitely reinvested. The distribution of earnings by our foreign subsidiaries in the form of dividends, or otherwise, may be subject to additional taxation. We estimate that additional taxes of approximately $119.3 million would be payable upon the remittance of all previously undistributed foreign earnings as of December 31, 2023, based upon the laws in effect on that date. We believe that we are able to maintain sufficient liquidity for our domestic operations and commitments without repatriating cash from our foreign subsidiaries.

36

Table of Contents

We finance our operating and investing needs primarily with borrowings under our Revolving Credit Facility and Receivables Facility, as well as uncommitted lines of credit entered into by certain of our foreign subsidiaries to support local operations, some of which are overdraft facilities. The Revolving Credit Facility has a borrowing limit of $1,725 million and the purchase limit under the Receivables Facility is $1,625 million. As of December 31, 2023, we had $953.0 million and $1,550.0 million outstanding under the Revolving Credit Facility and Receivables Facility, respectively. The maximum borrowing limits of our international lines of credit vary by facility and range between $0.6 million and $10.0 million. Our international lines of credit generally are renewable on an annual basis and certain facilities are fully and unconditionally guaranteed by Wesco Distribution. Accordingly, certain borrowings under these lines directly reduce availability under our Revolving Credit Facility. As of December 31, 2023, there was $8.2 million of borrowing capacity available under the international lines of credit that did not directly reduce availability under the Revolving Credit Facility. As of December 31, 2023, we had $1.0 million outstanding under our international lines of credit.

On March 1, 2023, we repaid the $58.6 million aggregate principal amount of our 5.50% Anixter Senior Notes due 2023. The repayment was funded with borrowings under our Revolving Credit Facility and had no impact on our results of operations.

Our $1,500 million of 7.125% Senior Notes will mature on June 15, 2025 (“2025 Notes”). On and after June 15, 2024, all or part of the 2025 Notes may be redeemed at a redemption price equal to 100% of the principal amount. We expect to complete a transaction or transactions to refinance the 2025 Notes during 2024.

For information regarding amendments to the Receivables Facility and Revolving Credit Facility as well as disclosure of our debt instruments, including our outstanding indebtedness as of December 31, 2023, see Note 9, “Debt” of our Notes to Consolidated Financial Statements.

An analysis of cash flows for 2023 and 2022 follows:

Operating Activities

Net cash provided by operating activities for 2023 totaled $493.2 million, compared to $11.0 million of cash generated in 2022. Net cash provided by operating activities for 2023 included net income of $766.1 million and non-cash adjustments to net income totaling $235.8 million, which primarily consisted of depreciation and amortization of $181.3 million, stock-based compensation expense of $48.1 million, and amortization of debt discount and debt issuance costs of $14.8 million, partially offset by deferred income taxes of $7.9 million.

Other sources of cash in 2023 included a decrease in trade accounts receivable of $52.2 million due to the timing of receipts from customers and a decrease in net sales in the fourth quarter of 2023 compared to the fourth quarter of the prior year and a decrease in other accounts receivable of $3.6 million due primarily to the collection of supplier volume rebates earned in 2022 in excess of income accrued during the current period, partially offset by an increase in value-added tax receivables. Primary uses of cash in 2023 included a decrease in accounts payable of $319.7 million primarily due to a reduction in inventory purchases in the fourth quarter, a decrease in accrued payroll and benefit costs of $92.3 million resulting primarily from the payment of management incentive compensation earned in 2022, partially offset by the accrual of management incentive compensation earned in the current year. Net operating cash flow was also negatively impacted by $68.4 million from an increase in inventories. Inventories grew at a slower rate than sales, as supply chain lead times have normalized. Uses of cash in 2023 also included an increase in other current and noncurrent assets of $60.6 million primarily due to an increase in capitalized costs associated with developing cloud computing arrangements to support our digital transformation initiatives, as well as a decrease in other current and noncurrent liabilities of $23.5 million.

Net cash provided by operating activities for 2022 totaled $11.0 million. Net cash provided by operating activities for 2022 included net income of $862.1 million and non-cash adjustments to net income totaling $243.1 million, which primarily consisted of depreciation and amortization of $179.0 million, stock-based compensation expense of $46.4 million, and amortization of debt discount and debt issuance costs of $15.2 million, partially offset by deferred income taxes of $1.2 million.

Other sources of cash in 2022 included an increase in accounts payable of $552.9 million due to higher purchases of inventory and an increase in other current and noncurrent liabilities of $131.6 million, primarily due to increases in deferred revenue and accrued taxes. Primary uses of cash in 2022 included an increase in inventories of $817.0 million due to supply chain challenges and to support growth in our sales backlog, including project-based business, an increase in trade accounts receivable of $690.6 million resulting from significant sales growth, an increase in other current and noncurrent assets of $153.2 million, primarily due to an increase in capitalized costs associated with developing cloud computing arrangements to support our digital transformation initiatives, an increase in other receivables of $54.8 million associated with higher supplier volume rebate income accruals, and a decrease in accrued payroll and benefit costs of $63.1 million due to lower incentive compensation accruals.

37

Table of Contents

Investing Activities

Net cash used in investing activities in 2023 was $89.6 million, compared to $283.6 million in 2022. Included in 2023 were capital expenditures of $92.3 million which primarily consisted of internal-use computer software and information technology hardware to support our digital transformation initiatives, as well as equipment and leasehold improvements to support our global network of branches, warehouses and sales offices.

Net cash used in investing activities in 2022 was $283.6 million. Included in 2022 was $255.4 million of cash paid to acquire Rahi Systems, less cash acquired of $68.6 million, as described in Note 6, “Acquisitions and Disposals” of our Notes to Consolidated Financial Statements. Capital expenditures were $99.4 million in 2022.

Financing Activities

Net cash used in financing activities in 2023 was $403.9 million, compared to $584.0 million of net cash provided by financing activities in 2022. During 2023, financing activities primarily consisted of net repayments of $70.3 million related to our Revolving Credit Facility and the repayment of our $58.6 million aggregate principal amount of 5.50% Anixter Senior Notes due 2023, partially offset by net borrowings of $15.0 million related to our Receivables Facility. Financing activities for 2023 also included $76.6 million and $57.4 million of dividends paid to holders of our common stock and Series A Preferred Stock, respectively, $75.0 million of common stock repurchases, $68.3 million of payments for taxes related to the exercise and vesting of stock-based awards, and net repayments on our various international lines of credit of approximately $6.0 million.

Net cash provided by financing activities in 2022 was $584.0 million. During 2022, financing activities primarily consisted of net borrowings of $433.0 million related to our Revolving Credit Facility and net borrowings of $265.0 million related to our Receivables Facility. Financing activities for 2022 also included $57.4 million of dividends paid to holders of our Series A Preferred Stock, $25.8 million of payments for taxes related to the exercise and vesting of stock-based awards, borrowings and repayments of $19.5 million and $19.5 million, respectively, related to our various international lines of credit, and $11.1 million of common stock repurchases.

The following table summarizes our material cash requirements from known contractual and other obligations at December 31, 2023, including interest, and the expected effect on our liquidity and cash flow in future periods:

20242025 to 20262027 to 20282029 - AfterTotal
(In millions)
Debt, excluding debt discount and debt issuance costs$8.6$3,070.0$2,284.5$1.5$5,364.6
Interest on indebtedness(1)365.4393.5155.0913.9
Non-cancelable operating leases191.2319.0206.4188.8905.4
Transition tax installments16.137.753.8
Defined benefit pension plans(2)7.07.0
Total$588.3$3,820.2$2,645.9$190.3$7,244.7

(1)    Interest on variable rate debt was calculated using the rates and balances outstanding at December 31, 2023.

(2)    As disclosed in Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements, the majority of our various defined benefit pension plans are non-contributory and, with the exception of the U.S. and Canada, cover substantially all full-time employees in their respective countries. Retirement benefits are provided based on compensation as defined in the plans. Our policy is to fund these plans as required by the Employee Retirement Income Security Act, the Internal Revenue Service and local statutory law. We currently estimate that we will contribute $7.0 million to our foreign pension plans in 2024. Due to the future impact of various market conditions, rates of return and changes in plan participants, we cannot provide a meaningful estimate of our future contributions beyond 2024.

In addition to the cash requirements disclosed in the table above, we expect future uses of cash to include working capital requirements, capital expenditures, investments in our digital capabilities, dividend payments to holders of our common stock and Series A Preferred Stock, benefit payments to participants in our deferred compensation plan, and other organic opportunities. Future uses of cash could also include acquisitions of businesses and the repurchase of common or preferred stock. We expect to spend approximately $100 million in 2024 on capital expenditures for information technology investments and to support our global network of branches, warehouses and sales offices.

We expect to fund future uses of cash with a combination of existing cash balances, cash generated from operating activities, borrowings under our revolving credit and accounts receivable securitization facilities, or new issuances of debt.

Purchase orders for inventory requirements and service contracts are not included in the table above. Generally, our purchase orders and contracts contain clauses allowing for cancellation. We do not have significant agreements to purchase material or goods that would specify minimum order quantities.

38

Table of Contents

Liabilities related to unrecognized tax benefits, including interest and penalties, of $133.7 million were excluded from the table above as we cannot reasonably estimate the timing of these potential cash settlements with taxing authorities. See Note 11, “Income Taxes” in our Notes to Consolidated Financial Statements for further information related to unrecognized tax benefits.

Seasonality

Our operating results are not significantly affected by seasonal factors. Sales during the first and fourth quarters have historically been affected by a reduced level of activity due to the impact of weather on projects. Sales typically increase beginning in March, with slight fluctuations per month through October. During periods of economic expansion or contraction, our sales by quarter have varied significantly from this pattern.

Recent Accounting Standards

See Note 2, “Accounting Policies” of our Notes to Consolidated Financial Statements for a description of recently adopted and recently issued accounting standards.

FY 2022 10-K MD&A

SEC filing source: 0000929008-23-000006.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2023-02-21. Report date: 2022-12-31.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the audited consolidated financial statements and notes thereto included in Item 8 of this Annual Report on Form 10-K. The matters discussed herein may contain forward-looking statements that are subject to certain risks and uncertainties that could cause actual results to differ materially from expectations. Certain of these risks are set forth in Item 1A of this Annual Report on Form 10-K. In this Item 7, “Wesco” refers to WESCO International, Inc., and its subsidiaries and its predecessors unless the context otherwise requires. References to “we,” “us,” “our” and the “Company” refer to Wesco and its subsidiaries.

In addition to the results provided in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), our discussion and analysis of financial condition and results of operations includes certain non-GAAP financial measures, which are defined further below. These financial measures include organic sales growth, earnings before interest, taxes, depreciation and amortization (“EBITDA”), adjusted EBITDA, adjusted EBITDA margin, financial leverage, adjusted selling, general and administrative expenses, adjusted income from operations, adjusted other non-operating expense (income), adjusted provision for income taxes, adjusted income before income taxes, adjusted net income, adjusted net income attributable to WESCO International, Inc., adjusted net income attributable to common stockholders, and adjusted earnings per diluted share. We believe that these non-GAAP measures are helpful to users of our financial statements as they provide a better understanding of our financial condition and results of operations on a comparable basis. Additionally, certain non-GAAP measures either focus on or exclude items impacting comparability of results, allowing users to more easily compare our financial performance from period to period. Management does not use these non-GAAP financial measures for any purpose other than the reasons stated above.

Company Overview

Wesco, headquartered in Pittsburgh, Pennsylvania, is a leading provider of business-to-business distribution, logistics services and supply chain solutions.

We employ approximately 20,000 people, maintain relationships with more than 50,000 suppliers, and serve approximately 150,000 customers worldwide. With millions of products, end-to-end supply chain services, and leading digital capabilities, we provide innovative solutions to meet customer needs across commercial and industrial businesses, contractors, government agencies, institutions, telecommunications providers, and utilities. Our innovative value-added solutions include supply chain management, logistics and transportation, procurement, warehousing and inventory management, as well as kitting and labeling, limited assembly of products and installation enhancement. We operate approximately 800 branches, warehouses and sales offices in more than 50 countries, providing a local presence for customers and a global network to serve multi-location businesses and multi-national corporations.

In 2021, we established a new corporate brand strategy to adopt a single, master brand architecture. This initiative reflects our corporate integration strategy and simplifies engagement for our customers and suppliers. In 2022, we launched the master brand identity in North America and began migrating certain legacy sub-brands to the master brand architecture, a process that will continue for the next several years. Due to the strength of its recognition with customers and suppliers, we will continue to use the Anixter brand name globally for the foreseeable future.

We have operating segments comprising three strategic business units consisting of Electrical & Electronic Solutions (“EES”), Communications & Security Solutions (“CSS”) and Utility & Broadband Solutions (“UBS”). These operating segments are equivalent to our reportable segments. See Item 1, “Business” in this Annual Report on Form 10-K for a description of each of our reportable segments and their business activities.

Overall Financial Performance

Our financial results for 2022 compared to 2021 reflect double-digit sales growth driven by the benefits of price inflation and higher volumes, increased scale, secular demand trends and execution of our cross-sell program, as well as margin expansion and the realization of integration synergies, partially offset by higher selling, general and administrative (“SG&A”) payroll and payroll-related expenses, volume-related costs, along with expenses associated with our digital transformation initiatives.

Net sales for 2022 increased $3.2 billion, or 17.6%, over the prior year. The increase reflects price inflation and volume growth, secular demand trends, and execution of our cross-sell program, as well as the acquisition of Rahi Systems Holdings, Inc. (“Rahi Systems”) in the fourth quarter of 2022, partially offset by the negative impacts of fluctuations in foreign exchange rates and the divestiture of Wesco's legacy utility and data communications businesses in Canada in the first quarter of 2021. Cost of goods sold as a percentage of net sales was 78.2% and 79.2% for 2022 and 2021, respectively. The improvement of 100 basis points reflects our focus on value-driven pricing and pass-through of inflationary costs, along with the continued momentum of our gross margin improvement program and higher supplier volume rebates as a percentage of net sales. Cost of

23

Table of Contents

goods sold for 2021 included a write-down to the carrying value of certain personal protective equipment inventories, which increased cost of goods sold as a percentage of net sales by approximately 14 basis points.

Income from operations was $1.4 billion for 2022, compared to $0.8 billion for 2021. Income from operations as a percentage of net sales was 6.7% for the current year, compared to 4.4% for the prior year. Income from operations for 2022 includes merger-related and integration costs of $67.4 million. Additionally, in connection with an integration initiative to review our brand strategy, certain legacy trademarks are migrating to a master brand architecture, which resulted in $9.8 million of accelerated amortization expense in 2022. Adjusted for these items, income from operations was 7.1% of net sales in 2022. For 2021, income from operations adjusted for merger-related and integration costs of $158.5 million, accelerated trademark amortization expense of $32.0 million, and a net gain of $8.9 million resulting from the divestiture of our legacy utility and data communications businesses in Canada was 5.4% of net sales. For 2022, income from operations compared to the prior year improved across all segments and reflects sales growth and lower cost of goods sold as a percentage of net sales, as well as the realization of integration cost synergies and a reduction to incentive compensation expense. Income from operations for 2022 was negatively impacted by higher salaries due to wage inflation and increased headcount, as well as an increase in commissions and volume-related costs driven by significant sales growth. In addition, digital transformation initiatives contributed to higher expenses in 2022, including those related to professional and consulting fees.

Earnings per diluted share for 2022 was $15.33, based on 52.4 million diluted shares, compared to $7.84 for 2021, based on 52.0 million diluted shares. Adjusted for merger-related and integration costs, accelerated trademark amortization expense, and the related income tax effects, earnings per diluted share for 2022 was $16.42. Adjusted for merger-related and integration costs, accelerated trademark amortization expense, net gain on divestitures, a $36.6 million curtailment gain resulting from the remeasurement of our pension obligations in the U.S. and Canada due to amending certain terms of such defined benefit plans, and the related income tax effects, earnings per diluted share for 2021 was $9.98. Adjusted earnings per diluted share increased 64.5% year-over-year.

Our industry and the broader economy are experiencing supply chain challenges, including product delays and backlogged orders, shortages in raw materials and components, labor shortages, transportation challenges, and higher costs. During 2022, we continued to experience strong demand from many of our customers, along with uncertainty in the amount of time it takes to receive products from our suppliers. We are aggressively managing supply chain issues and have begun to experience some improvements, although we anticipate that supply chain constraints and inflationary pressures may extend into 2023. We intend to continue to actively manage the impact of inflation on our results of operations. We cannot reasonably estimate possible future impacts from these disruptions at this time.

There continues to be ongoing uncertainties associated with the COVID-19 pandemic, including with respect to economic conditions and the possible resurgence of COVID-19 whether through the emergence of new variants of the virus or otherwise. As the duration and severity of the COVID-19 pandemic cannot be predicted, there is significant uncertainty as to the ultimate impact that COVID-19 will have on our business, results of operations and financial condition.

Cash Flow

Operating cash flow for 2022 was $11.0 million. Net cash provided by operating activities included net income of $862.1 million and non-cash adjustments to net income totaling $243.1 million, which were primarily comprised of depreciation and amortization of $179.0 million, stock-based compensation expense of $46.4 million, amortization of debt discount and debt issuance costs of $15.2 million, and deferred income taxes of $1.2 million. Operating cash flow also included changes in assets and liabilities of $1.1 billion, which were primarily comprised of an increase in inventories of $817.0 million resulting from supply chain challenges and to support growth in our sales backlog, including project-based business, as well as an increase in trade accounts receivable of $690.6 million due to significant sales growth. These cash outflows were partially offset by an increase in accounts payable of $552.9 million due to the aforementioned higher purchases of inventory.

Investing activities primarily included $255.4 million of cash paid to acquire Rahi Systems, less cash acquired of $68.6 million, and $99.4 million of capital expenditures mostly consisting of internal-use computer software and information technology hardware to support our digital transformation initiatives, as well as equipment and leasehold improvements to support our global network of branches, warehouses and sales offices.

Financing activities were primarily comprised of net borrowings of $433.0 million related to our revolving credit facility (the “Revolving Credit Facility”) and net borrowings of $265.0 million related to our accounts receivable securitization facility (the “Receivables Facility”). Financing activities for 2022 also included $57.4 million of dividends paid to holders of our Series A Preferred Stock, $25.8 million of payments for taxes related to the exercise and vesting of stock-based awards, borrowings and repayments of $19.5 million and $19.5 million, respectively, related to our various international lines of credit, and $11.1 million of common stock repurchases.

24

Table of Contents

Financing Availability

During 2022 we amended our Receivables Facility and Revolving Credit Facility to, among other things, increase their borrowing capacities, extend their maturity dates, and replace the London Inter-Bank Offered Rate-based (“LIBOR”) interest rate options with Secured Overnight Financing Rate-based (“SOFR”) interest rate options.

See Note 9, “Debt” of our Notes to Consolidated Financial Statements for additional disclosure regarding the amendments to these facilities.

As of December 31, 2022, we had $664.9 million in total available borrowing capacity under our Revolving Credit Facility. Available borrowing capacity under our Receivables Facility was $50.0 million. The Revolving Credit Facility and the Receivables Facility mature in March 2027 and March 2025, respectively. As of December 31, 2022, we also had $10.1 million of borrowing capacity available under our international lines of credit that did not directly reduce availability under the Revolving Credit Facility.

Critical Accounting Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates that involve a significant level of estimation uncertainty and have had or are reasonably likely to have a material impact on the financial condition or results of operations, including those related to goodwill and indefinite-lived intangible assets, defined benefit pension plans, and income taxes. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. If actual market conditions are less favorable than those projected by management, additional adjustments to reserve items may be required. We believe the following accounting estimates are the most critical to the understanding of our consolidated financial statements as they require subjective or complex judgments by management.

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and indefinite-lived intangible assets are tested for impairment annually as of October 1, or more frequently if triggering events occur, indicating that their carrying values may not be recoverable. We test for goodwill impairment on a reporting unit level. We first assess qualitative factors, including macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, other relevant events such as changes in key personnel, changes in the composition or carrying amount of the net assets of a reporting unit, and changes in share price, to determine whether it is more likely than not that the fair value of our reporting units are less than their carrying values. If the qualitative assessment indicates that the fair values of our reporting units may not exceed their respective carrying values, then we perform a quantitative test for impairment by comparing the fair value of each reporting unit to its carrying value. We determine the fair values of our reporting units using a discounted cash flow analysis and consideration of market multiples. The discounted cash flow analysis uses certain assumptions, including expected operating margins supported by a combination of historical results, current forecasts, market data and recent economic events, which are categorized within Level 3 of the fair value hierarchy. We use a discount rate that reflects market participants' cost of capital. We evaluate the recoverability of indefinite-lived intangible assets using the relief-from-royalty method based on projected financial information. Significant inputs used in the relief-from-royalty method include projected revenues, discount rates, royalty rates, and applicable income tax rates.

We performed our annual impairment tests of goodwill and indefinite-lived intangible assets during the fourth quarter of 2022 by assessing qualitative factors to determine whether it was more likely than not that the fair values of our reporting units and indefinite-lived intangible assets were less than their respective carrying amounts. As a result of this assessment, we determined that it was more likely than not that the fair values of our reporting units and indefinite-lived intangible assets continued to exceed their respective carrying amounts and, therefore, a quantitative impairment test was not necessary.

The determination of fair value involves significant management judgment, particularly as it relates to the underlying assumptions and factors around future expected operating margins and discount rate. Management applies its best judgment when assessing the reasonableness of financial projections. Fair values are sensitive to changes in underlying assumptions and factors. As a result, there can be no assurance that the estimates and assumptions made for purposes of the annual goodwill and indefinite-lived intangible impairment tests will prove to be an accurate prediction of future results.

See Note 5, “Goodwill and Intangible Assets” of our Notes to Consolidated Financial Statements for additional disclosure regarding goodwill and indefinite-lived intangible assets.

25

Table of Contents

Defined Benefit Pension Plans

Liabilities and expenses for defined benefit pension plans are determined using actuarial methodologies and incorporate significant assumptions, including the interest rate used to discount the future estimated cash flows, the expected long-term rate of return on plan assets, and several assumptions relating to the employee workforce (salary increases, retirement age, and mortality).

Liabilities for defined benefit pension plans are particularly sensitive to changes in the discount rate. At the end of each fiscal year, we determine the discount rate to measure our defined benefit pension plan liabilities at their present value. The discount rate reflects the current rate at which the defined benefit pension plan liabilities could be effectively settled at the end of the year. This rate is estimated using a yield curve based on corporate bond data, which we believe is consistent with observable market conditions and industry standards for developing spot rate curves. The consolidated weighted-average discount rate used to measure the projected benefit obligation of all plans was 4.6% and 2.6% at December 31, 2022 and 2021, respectively. As a sensitivity measure, the effect of a 50-basis-point decline in the assumed discount rate would result in an increase in the expense for 2023 of approximately $1.0 million, and an increase in our projected benefit obligations at December 31, 2022 of $41.0 million. The impact of a 50-basis-point increase in the assumed discount rate would result in a decrease in the expense for 2023 of approximately $3.0 million, and a decrease in our projected benefit obligations at December 31, 2022 of $37.0 million. Changes in the expected long-term rate of return on plan assets and assumptions relating to the employee workforce are less likely to have a material impact on the measurement of defined benefit pension plan liabilities.

See Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements for additional disclosure regarding defined benefit pension plans.

Income Taxes

We recognize deferred tax assets consistent with amounts expected to be realized. To make such determination, management evaluates all positive and negative evidence, including but not limited to, prior, current and future taxable income, tax planning strategies and future reversals of existing taxable temporary differences. A valuation allowance is recognized if it is “more-likely-than-not” that some or all of a deferred tax asset will not be realized. We regularly assess the realizability of deferred tax assets.

We account for uncertainty in income taxes using a “more-likely-than-not” recognition threshold. Due to the subjectivity inherent in the evaluation of uncertain tax positions, the tax benefit ultimately recognized may materially differ from the estimate recognized in the consolidated financial statements. We recognize interest and penalties related to uncertain tax benefits as part of interest expense and income tax expense, respectively.

See Note 11, “Income Taxes” of our Notes to Consolidated Financial Statements for additional disclosure regarding income taxes.

26

Table of Contents

Results of Operations

The following table sets forth the percentage relationship to net sales of the financial statement line items in our Consolidated Statements of Income and Comprehensive Income for the periods presented:

Year Ended December 31,
202220212020
Net sales100.0%100.0%100.0%
Cost of goods sold (excluding depreciation and amortization)78.279.281.1
Selling, general and administrative expenses14.215.315.1
Depreciation and amortization0.81.11.0
Income from operations6.84.42.8
Interest expense, net1.51.51.8
Other expense (income), net(0.3)
Income before income taxes5.33.21.0
Provision for income taxes1.30.60.2
Net income4.02.60.8
Net income (loss) attributable to noncontrolling interests
Net income attributable to WESCO International, Inc.4.02.60.8
Preferred stock dividends0.30.40.2
Net income attributable to common stockholders3.7%2.2%0.6%

27

Table of Contents

2022 Compared to 2021

Net Sales

The following table sets forth net sales and organic sales growth by segment for the periods presented:

Twelve Months EndedGrowth/(Decline)
(In thousands)December 31, 2022December 31, 2021ReportedAcquisition/Divestiture ImpactForeign Exchange ImpactWorkday ImpactOrganic Growth
EES$8,823,331$7,621,26315.8%(0.1)%(1.8)%0.4%17.3%
CSS6,401,4685,715,23812.0%2.0%(1.9)%0.4%11.5%
UBS6,195,3174,881,01126.9%(0.1)%(0.6)%0.4%27.2%
Total net sales$21,420,116$18,217,51217.6%0.5%(1.5)%0.4%18.2%

Note: Organic sales growth is a non-GAAP financial measure of sales performance. Organic sales growth is calculated by deducting the percentage impact from acquisitions and divestitures for one year following the respective transaction, fluctuations in foreign exchange rates and number of workdays from the reported percentage change in consolidated net sales.

Net sales were $21.4 billion for 2022 compared with $18.2 billion for 2021, an increase of 17.6%. The increase primarily reflects price inflation and volume growth, secular demand trends, and execution of our cross-sell program. Organic sales for 2022 grew 18.2% as the acquisition of Rahi Systems in the fourth quarter of 2022, partially offset by the divestiture of Wesco's legacy utility and data communications businesses in Canada in the first quarter of 2021, positively impacted reported net sales by 0.5%. Additionally, the number of workdays positively impacted reported net sales by 0.4%, while fluctuations in foreign exchange rates negatively impacted reported net sales by 1.5%. All segments reported double-digit sales growth versus the prior year, as discussed below. For the year ended December 31, 2022, pricing related to inflation favorably impacted our net sales by approximately 8%.

EES reported net sales of $8.8 billion for 2022 compared to $7.6 billion for 2021, an increase of 15.8%. Organic sales for 2022 grew 17.3% as the number of workdays positively impacted reported net sales by 0.4%, while fluctuations in foreign exchange rates and the Canadian divestitures described in our overall results above negatively impacted reported net sales by 1.8% and 0.1%, respectively. The year-over-year increase in organic sales reflects price inflation, growth in our industrial, construction, and original equipment manufacturer businesses, as well as the benefits of cross selling and secular growth trends. Additionally, supply chain constraints have had a negative impact on sales in both 2022 and 2021; however, these pressures have begun to moderate.

CSS reported net sales of $6.4 billion for 2022 compared to $5.7 billion for 2021, an increase of 12.0%. Organic sales for 2022 grew 11.5% as the acquisition of Rahi Systems in the fourth quarter of 2022 and the number of workdays positively impacted reported net sales by 2.0% and 0.4%, respectively, while fluctuations in foreign exchange rates negatively impacted reported net sales by 1.9%. The year-over-year increase in organic sales reflects strong growth in our security solutions and network infrastructure businesses, as well as the benefits of cross selling and some improvements in supply chain constraints.

UBS reported net sales of $6.2 billion for 2022 compared to $4.9 billion for 2021, an increase of 26.9%. Organic sales for 2022 grew 27.2% as the number of workdays positively impacted reported net sales by 0.4%, while fluctuations in foreign exchange rates and the Canadian divestitures described in our overall results above negatively impacted reported net sales by 0.6% and 0.1%, respectively. The year-over-year increase in organic sales reflects price inflation, broad-based growth driven by investments in electrification, green energy, utility grid modernization and hardening, and rural broadband development, as well as expansion in our integrated supply business.

Cost of Goods Sold

Cost of goods sold for 2022 was $16.8 billion compared to $14.4 billion for 2021, an increase of $2.4 billion. Cost of goods sold as a percentage of net sales was 78.2% and 79.2% for 2022 and 2021, respectively. The favorable reduction of 100 basis points reflects our focus on value-driven pricing and pass-through of inflationary costs, along with the continued momentum of our gross margin improvement program and higher supplier volume rebates as a percentage of net sales. Cost of goods sold for 2021 included a write-down to the carrying value of certain personal protective equipment inventories, which increased cost of goods sold as a percentage of net sales by approximately 14 basis points.

28

Table of Contents

Selling, General and Administrative Expenses

SG&A expenses primarily include payroll and payroll-related costs, shipping and handling, travel and entertainment, facilities, utilities, information technology expenses, professional and consulting fees, credit losses, gains (losses) on the sale of property and equipment, as well as real estate and personal property taxes. SG&A expenses for 2022 totaled $3.0 billion versus $2.8 billion for 2021, an increase of $252.6 million, or 9.0%. As a percentage of net sales, SG&A expenses were 14.2% and 15.3% for 2022 and 2021, respectively. SG&A expenses for 2022 include merger-related and integration costs of $67.4 million. Adjusted for this amount, SG&A expenses for 2022 were 13.9% of net sales. SG&A expenses for 2021 include merger-related and integration costs of $158.5 million, as well as a net gain of $8.9 million resulting from the Canadian divestitures. Adjusted for these amounts, SG&A expenses were 14.5% of net sales for 2021.

SG&A payroll and payroll-related expenses for 2022 of $1.9 billion increased by $128.7 million compared to 2021 primarily as a result of higher salaries due to wage inflation and increased headcount, as well as an increase in commissions driven by significant sales growth, partially offset by a reduction to incentive compensation expense.

SG&A expenses not related to payroll and payroll-related costs for 2022 were $1.1 billion, an increase of $123.9 million compared to 2021. The increase primarily reflects higher volume-related costs driven by significant sales growth and digital transformation initiatives that contributed to higher expenses in 2022, including those related to professional and consulting fees, as well as the absence of the net gain recognized in the first quarter of 2021 on the Canadian divestitures. These increases were partially offset by the realization of integration cost synergies and lower costs associated with integration activities.

Depreciation and Amortization

Depreciation and amortization decreased $19.6 million to $179.0 million for 2022, compared to $198.6 million for 2021. Depreciation and amortization for 2022 and 2021 includes $9.8 million and $32.0 million, respectively, of accelerated amortization expense resulting from changes in the estimated useful lives of certain legacy trademarks that are migrating to our master brand architecture, as described in our overall results above.

Income from Operations

The following tables set forth income from operations by segment for the periods presented:

Year Ended December 31, 2022
(In thousands)EESCSSUBSCorporateTotal
Income from operations$799,419$525,693$650,470$(537,497)$1,438,085
Year Ended December 31, 2021
(In thousands)EESCSSUBSCorporateTotal
Income from operations$542,059$395,343$412,740$(548,269)$801,873

Income from operations was $1.4 billion for 2022 compared to $0.8 billion for 2021. The increase of $636.2 million, or 79.3%, reflects sales growth and lower cost of goods sold as a percentage of net sales, along with the realization of integration synergies and a reduction to incentive compensation expense, partially offset by higher salaries and commissions, volume-related costs, as well as expenses associated with our digital transformation initiatives.

EES reported income from operations of $799.4 million for 2022 compared to $542.1 million for 2021. The increase of $257.3 million primarily reflects the factors impacting the overall business, as described above.

CSS reported income from operations of $525.7 million for 2022 compared to $395.3 million for 2021. The increase of $130.4 million primarily reflects the factors impacting the overall business, as described above. Additionally, income from operations for 2021 was negatively impacted by approximately $21.1 million from the inventory write-down described under Cost of Goods Sold above.

UBS reported income from operations of $650.5 million for 2022 compared to $412.7 million for 2021. The increase of $237.8 million primarily reflects the factors impacting the overall business, as described above, offset by the benefit in the first quarter of 2021 from the net gain on the Canadian divestitures.

Corporate, which primarily incurs costs related to treasury, tax, information technology, legal and other centralized functions, recognized net expenses of $537.5 million for 2022, compared to $548.3 million for 2021. The decrease of $10.8 million primarily reflects lower professional and consulting fees associated with integration activities, partially offset by an increase in information technology expenses related to our digital transformation initiatives as well as higher salaries due to wage inflation and increased headcount.

29

Table of Contents

Interest Expense, net

Net interest expense totaled $294.4 million for 2022 compared to $268.1 million for 2021. The increase of $26.3 million, or 9.8%, reflects higher borrowings and an increase in variable interest rates.

Other Expense (Income), net

Other non-operating expense totaled $7.0 million for 2022 compared to other non-operating income of $48.1 million for 2021. As disclosed in Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements, we recognized net benefits of $14.8 million and $53.2 million associated with the non-service cost components of net periodic pension (benefit) cost for 2022 and 2021, respectively. The non-service cost components of net periodic pension (benefit) cost for 2021 includes a $36.6 million curtailment gain. Due to fluctuations in the U.S. dollar against certain foreign currencies, for example the Canadian dollar, we recorded foreign currency exchange losses of $19.9 million and $2.8 million in 2022 and 2021, respectively.

Income Taxes

The provision for income taxes was $274.5 million for 2022 compared to $115.5 million for 2021, resulting in effective tax rates of 24.2% and 19.9%, respectively. The effective tax rates for both the current year and the prior year were favorably impacted by the tax benefits related to intercompany financing and reductions in the valuation allowance recorded against certain foreign tax credit carryforwards. The higher effective tax rate in the current year is primarily due to lower tax benefits from intercompany financing arrangements resulting from changes in Canadian tax law and certain foreign derived intangible income.

Net Income and Earnings per Share

Net income for 2022 was $862.1 million compared to $466.4 million for 2021, an increase of $395.7 million, or 84.8%.

Preferred stock dividends expense, which relates to the fixed-rate reset cumulative perpetual preferred stock, Series A, that was issued in connection with the merger with Anixter, was $57.4 million for 2022 and 2021.

Net income and earnings per diluted share attributable to common stockholders were $803.1 million and $15.33, respectively, for 2022 compared to $408.0 million and $7.84, respectively, for 2021. Adjusted for merger-related and integration costs, accelerated trademark amortization expense, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $860.1 million and $16.42, respectively, for the year ended December 31, 2022. Adjusted for merger-related and integration costs, accelerated trademark amortization expense, net gain on Canadian divestitures, gain on curtailment of defined benefit pension plans, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $519.3 million and $9.98, respectively, for the year ended December 31, 2021.

30

Table of Contents

The following tables reconcile selling, general and administrative expenses, income from operations, other non-operating expense (income), provision for income taxes and earnings per diluted share to adjusted selling, general and administrative expenses, adjusted income from operations, adjusted other non-operating expense (income), adjusted provision for income taxes and adjusted earnings per diluted share, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31,
Adjusted SG&A Expenses:20222021
(In thousands)
Selling, general and administrative expenses$3,044,223$2,791,641
Merger-related and integration costs(67,446)(158,484)
Net gain on divestitures8,927
Adjusted selling, general and administrative expenses$2,976,777$2,642,084
Year Ended December 31,
Adjusted Income from Operations:20222021
(In thousands)
Income from operations$1,438,085$801,873
Merger-related and integration costs67,446158,484
Accelerated trademark amortization9,77432,021
Net gain on divestitures(8,927)
Adjusted income from operations$1,515,305$983,451
Year Ended December 31,
Adjusted Other Expense (Income), net:20222021
(In thousands)
Other expense (income), net$7,014$(48,112)
Curtailment gain36,580
Adjusted other expense (income), net$7,014$(11,532)
Year Ended December 31,
Adjusted Provision for Income Taxes:20222021
(In thousands)
Provision for income taxes$274,529$115,510
Income tax effect of adjustments to income from operations and other income, net(1)20,16533,672
Adjusted provision for income taxes$294,694$149,182

(1)    The adjustments to income from operations for the years ended December 31, 2022 and 2021 have been tax effected at rates of 26.1% and 23.5%, respectively. The adjustment to other-non operating income for the year ended December 31, 2021 has been tax effected at a rate of 24.6% as the majority of the curtailment gain relates to our Canadian defined benefit pension plans.

31

Table of Contents

Year Ended December 31,
Adjusted Earnings Per Diluted Share:20222021
(In thousands, except per share data)
Adjusted income from operations$1,515,305$983,451
Interest expense, net294,420268,073
Adjusted other expense (income), net7,014(11,532)
Adjusted income before income taxes1,213,871726,910
Adjusted provision for income taxes294,694149,182
Adjusted net income919,177577,728
Net income attributable to noncontrolling interests1,6511,020
Adjusted net income attributable to WESCO International, Inc.917,526576,708
Preferred stock dividends57,40857,408
Adjusted net income attributable to common stockholders$860,118$519,300
Diluted shares52,39552,030
Adjusted earnings per diluted share$16.42$9.98

Note: For the year ended December 31, 2022, SG&A expenses, income from operations, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, accelerated trademark amortization expense associated with migrating to our master brand architecture, and the related income tax effects. For the year ended December 31, 2021, SG&A expenses, income from operations, other non-operating income, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, a net gain on the divestiture of our legacy utility and data communications businesses in Canada, accelerated trademark amortization expense associated with migrating to our master brand architecture, a curtailment gain, and the related income tax effects. These non-GAAP financial measures provide a better understanding of our financial results on a comparable basis.

32

Table of Contents

EBITDA, Adjusted EBITDA and Adjusted EBITDA margin %

The following tables reconcile net income attributable to common stockholders to EBITDA, adjusted EBITDA and adjusted EBITDA margin % by segment, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31, 2022
(In thousands)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$801,283$526,985$648,478$(1,173,683)$803,063
Net income attributable to noncontrolling interests1581,4931,651
Preferred stock dividends57,40857,408
Provision for income taxes274,529274,529
Interest expense, net294,420294,420
Depreciation and amortization42,62168,44823,25144,694179,014
EBITDA$844,062$595,433$671,729$(501,139)$1,610,085
Other (income) expense, net(2,022)(1,292)1,9928,3367,014
Stock-based compensation expense(1)9,2264,8593,53423,41841,037
Merger-related and integration costs67,44667,446
Adjusted EBITDA$851,266$599,000$677,255$(401,939)$1,725,582
Adjusted EBITDA margin %9.6%9.4%10.9%8.1%
(1) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2022 excludes $5.4 million as such amount is included in merger-related and integration costs.
Year Ended December 31, 2021
(In thousands)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$543,633$394,031$412,698$(942,388)$407,974
Net income attributable to noncontrolling interests2987221,020
Preferred stock dividends57,40857,408
Provision for income taxes115,510115,510
Interest expense, net268,073268,073
Depreciation and amortization55,99882,87022,44737,239198,554
EBITDA$599,929$476,901$435,145$(463,436)$1,048,539
Other (income) expense, net(1)(1,872)1,31242(47,594)(48,112)
Stock-based compensation expense(2)6,4042,6072,10714,58125,699
Merger-related and integration costs158,484158,484
Net gain on divestitures(8,927)(8,927)
Adjusted EBITDA$604,461$480,820$428,367$(337,965)$1,175,683
Adjusted EBITDA margin %7.9%8.4%8.8%6.5%
(1) Corporate other non-operating income in the calculation of adjusted EBITDA for the year ended December 31, 2021 includes a $36.6 million curtailment gain.
(2) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2021 excludes $5.1 million as such amount is included in merger-related and integration costs.

Note: EBITDA, Adjusted EBITDA and Adjusted EBITDA margin % are non-GAAP financial measures that provide indicators of our performance and ability to meet debt service requirements. EBITDA is defined as earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA is defined as EBITDA before other non-operating expense (income), non-cash stock-based compensation expense, merger-related and integration costs, and net gain on the divestiture of our legacy utility and data communications businesses in Canada. Adjusted EBITDA margin % is calculated by dividing Adjusted EBITDA by net sales.

33

Table of Contents

2021 Compared to 2020

The comparability of our financial performance for 2021 relative to 2020 is impacted by the fact that 2020 includes the results of operations of Anixter for only the second half of the year.

Net Sales

The following table sets forth net sales by segment for the periods presented:

Year Ended December 31,
(In thousands)20212020
EES$7,621,263$5,479,760
CSS5,715,2383,323,264
UBS4,881,0113,522,971
Total net sales$18,217,512$12,325,995

Net sales were $18.2 billion for 2021 compared with $12.3 billion for 2020, an increase of 47.8%. The increase primarily reflects the merger with Anixter, along with double-digit growth across all segments, as described below. For the year ended December 31, 2021, pricing related to inflation favorably impacted our net sales by approximately 3%.

EES reported net sales of $7.6 billion for 2021, compared to $5.5 billion for 2020, an increase of 39.1%. In addition to the impact from the merger with Anixter, the increase reflects improved economic conditions and strong demand.

CSS reported net sales of $5.7 billion for 2021, compared to $3.3 billion for 2020, an increase of 72.0%. The increase reflects the impact of the merger with Anixter and broad-based growth in our security solutions and network infrastructure businesses.

UBS reported net sales of $4.9 billion for 2021, compared to $3.5 billion for 2020, an increase of 38.5%. Along with the impact of the merger with Anixter, the increase reflects broad-based growth in our utility business and continued strong demand in our broadband business.

Cost of Goods Sold

Cost of goods sold for 2021 was $14.4 billion compared to $10.0 billion for 2020, an increase of $4.4 billion, reflecting the merger with Anixter. Cost of goods sold as a percentage of net sales was 79.2% and 81.1% for 2021 and 2020, respectively. The decrease of 190 basis points reflects strong execution on supplier price increases and cost initiatives to offset inflation, along with higher supplier volume rebate income, partially offset by higher expense related to excess and obsolete inventories, including write-downs totaling $26.2 million to the carrying value of certain personal protective equipment products. These write-downs of inventory impacted cost of goods sold as a percentage of net sales for 2021 by 14 basis points. Cost of goods sold as a percentage of net sales for 2020 was 80.6% excluding the effect of merger-related fair value adjustments of $43.7 million and an out-of-period adjustment related to inventory cost absorption accounting of $18.9 million.

Selling, General and Administrative Expenses

SG&A expenses primarily include payroll and payroll-related costs, shipping and handling, travel and entertainment, facilities, utilities, information technology expenses, professional and consulting fees, credit losses, gains (losses) on the sale of property and equipment, as well as real estate and personal property taxes. SG&A expenses for 2021 totaled $2.8 billion versus $1.9 billion for 2020. As a percentage of net sales, SG&A expenses were 15.3% and 15.1%, respectively. The increase in SG&A expenses of $932.6 million, or 50.2%, primarily reflects the impact of the merger with Anixter. SG&A expenses for 2021 were favorably impacted by the realization of integration synergies and structural cost takeout actions. SG&A expenses for 2021 include merger-related and integration costs of $158.5 million, as well as a net gain of $8.9 million resulting from the divestiture of our legacy utility and data communications businesses in Canada in the first quarter of 2021 in connection with the merger with Anixter. Adjusted for these amounts, SG&A expenses were 14.5% of net sales for 2021. SG&A expenses for 2020 include $132.2 million of merger-related and integration costs, as well as a gain on the sale of an operating branch in the U.S. of $19.8 million. Adjusted for these amounts, SG&A expenses were 14.2% of net sales for 2020, reflecting lower sales and the merger with Anixter, partially offset by cost reduction actions taken in response to the COVID-19 pandemic that lowered SG&A expenses as a percentage of net sales by approximately 40 basis points.

SG&A payroll and payroll-related expenses for 2021 of $1.8 billion increased by $589.5 million compared to 2020 primarily due to the merger with Anixter. Excluding the impact of the merger with Anixter, SG&A payroll and payroll-related expenses in 2021 were negatively impacted by higher salaries, variable compensation expense and benefit costs, including the impact of reinstating salaries and certain benefits for legacy Wesco employees that had been reduced or suspended in 2020 in response to the COVID-19 pandemic.

34

Table of Contents

SG&A expenses not related to payroll and payroll-related costs for 2021 were $991.1 million, an increase of $343.1 million compared to 2020 primarily due to the merger with Anixter. Excluding the impact of the merger with Anixter, these SG&A expenses for 2021 were negatively impacted by higher professional and consulting fees, and information technology expenses resulting from integration activities and digital transformation initiatives. Shipping and handling costs also increased in 2021 due to sales volume growth. The gain on the sale of an operating branch in the U.S., as described above, positively impacted SG&A expenses in 2020.

Depreciation and Amortization

Depreciation and amortization increased $77.0 million to $198.6 million for 2021, compared to $121.6 million for 2020. Depreciation and amortization for 2021 includes $63.3 million attributable to the amortization of identifiable intangible assets acquired in the merger with Anixter, as well as $32.0 million resulting from changes in the estimated useful lives of certain legacy trademarks that are migrating to our master brand architecture, as described above.

Income from Operations

The following tables set forth income from operations by segment for the periods presented:

Year Ended December 31, 2021
(In thousands)EESCSSUBSCorporateTotal
Income from operations$542,059$395,343$412,740$(548,269)$801,873
Year Ended December 31, 2020
(In thousands)EESCSSUBSCorporateTotal
Income from operations$260,207$217,163$231,702$(362,034)$347,038

Income from operations was $801.9 million for 2021, compared to $347.0 million for 2020. The increase of $454.9 million, or 131.1%, primarily reflects the merger with Anixter. For 2021, income from operations improved compared to 2020 across all segments and reflects sales growth and lower cost of goods sold as a percentage of net sales, as well as the realization of integration cost synergies and structural cost takeout actions. Income from operations for 2021 was negatively impacted by higher volume-related costs, and SG&A payroll and payroll-related expenses, as described above. Income from operations for 2021 was not materially effected by higher pricing related to inflation given the offsetting effect of higher costs for certain products.

EES reported income from operations of $542.1 million for 2021, compared to $260.2 million for 2020. The increase of $281.9 million primarily reflects the factors impacting the overall business, as described above. Additionally, income from operations for 2021 was negatively impacted by $4.4 million from the inventory write-down described under Cost of Goods Sold above, as well as accelerated trademark amortization expense of $13.3 million associated with migrating to our master brand architecture.

CSS reported income from operations of $395.3 million for 2021, compared to $217.2 million for 2020. The increase of $178.1 million primarily reflects the factors impacting the overall business, as described above. Additionally, income from operations for 2021 was negatively impacted by $21.1 million from the inventory write-down described under Cost of Goods Sold above, as well as accelerated trademark amortization expense of $17.4 million associated with migrating to our master brand architecture.

UBS reported income from operations of $412.7 million for 2021, compared to $231.7 million for 2020. The increase of $181.0 million primarily reflects the factors impacting the overall business, as described above, combined with the benefit from the net gain on the Canadian divestitures.

Corporate, which primarily incurs costs related to treasury, tax, information technology, legal and other centralized functions, recognized net expenses of $548.3 million for 2021, compared to $362.0 million for 2020. The increase of $186.3 million primarily reflects the merger with Anixter, as well as merger-related and integration costs, higher SG&A payroll and payroll-related expenses, professional and consulting fees, and information technology expenses, as described above.

Interest Expense, net

Net interest expense totaled $268.1 million for 2021, compared to $226.6 million for 2020. The increase of $41.5 million, or 18.3%, was driven by financing activity related to the merger with Anixter.

35

Table of Contents

Other Expense (Income), net

Other non-operating income totaled $48.1 million for 2021, compared to $2.4 million for 2020, an increase of $45.7 million. As disclosed in Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements, we recognized net benefits of $53.2 million and $8.2 million associated with the non-service cost components of net periodic pension (benefit) cost for 2021 and 2020, respectively. The non-service cost components of net periodic pension (benefit) cost for 2021 includes a $36.6 million curtailment gain. Due to fluctuations in the U.S. dollar against certain foreign currencies, we recognized net foreign currency exchange losses of $2.8 million and $4.9 million in 2021 and 2020, respectively.

Income Taxes

The provision for income taxes was $115.5 million for 2021, compared to $22.8 million for 2020, resulting in effective tax rates of 19.9% and 18.6%, respectively. The effective tax rate for 2021 was favorably impacted by a change in the mix of domestic and foreign earnings, tax benefits related to certain foreign derived intangible income, and a reduction in the valuation allowance recorded against certain foreign tax credit carryforwards. The effective tax rate for 2020 was impacted by one-time items associated with the Anixter merger.

Net Income and Earnings per Share

Net income for 2021 was $466.4 million, compared to $100.0 million for 2020.

Preferred stock dividends expense, which relates to the fixed-rate reset cumulative perpetual preferred stock, Series A, that was issued in connection with the merger with Anixter, was $57.4 million for 2021 compared to $30.1 million for 2020.

Net income and earnings per diluted share attributable to common stockholders were $408.0 million and $7.84, respectively, for 2021, compared with $70.4 million and $1.51, respectively, for 2020. Adjusted for merger-related and integration costs, accelerated trademark amortization expense, net gain on Canadian divestitures, gain on curtailment of defined benefit pension plans, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $519.3 million and $9.98, respectively, for the year ended December 31, 2021. Adjusted for merger-related and integration costs, merger-related fair value adjustments, an out-of-period adjustment related to inventory cost absorption accounting, gain on sale of a U.S. operating branch, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $203.6 million and $4.37, respectively, for the year ended December 31, 2020.

The following tables reconcile selling, general and administrative expenses, income from operations, other non-operating income, provision for income taxes and earnings per diluted share to adjusted selling, general and administrative expenses, adjusted income from operations, adjusted other non-operating income, adjusted provision for income taxes and adjusted earnings per diluted share, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31,
Adjusted SG&A Expenses:20212020
(In thousands)
Selling, general and administrative expenses$2,791,641$1,859,028
Merger-related and integration costs(158,484)(132,236)
Net gain on sale of assets and divestitures8,92719,816
Adjusted selling, general and administrative expenses$2,642,084$1,746,608
Year Ended December 31,
Adjusted Income from Operations:20212020
(In thousands)
Income from operations$801,873$347,038
Merger-related and integration costs158,484132,236
Accelerated trademark amortization32,021
Merger-related fair value adjustments43,693
Out-of-period adjustment18,852
Net gain on sale of assets and divestitures(8,927)(19,816)
Adjusted income from operations$983,451$522,003

36

Table of Contents

Year Ended December 31,
Adjusted Other Income, net:20212020
(In thousands)
Other income, net$(48,112)$(2,395)
Curtailment gain36,580
Adjusted other income, net$(11,532)$(2,395)
Year Ended December 31,
Adjusted Provision for Income Taxes:20212020
(In thousands)
Provision for income taxes$115,510$22,803
Income tax effect of adjustments to income from operations and other income, net(1)33,67241,817
Adjusted provision for income taxes$149,182$64,620

(1)    The adjustments to income from operations have been tax effected at rates of 23.5% and 23.9% for the years ended December 31, 2021 and 2020, respectively. The adjustment to other non-operating income for the year ended December 31, 2021 has been tax effected at a rate of 24.6% as the majority of the curtailment gain relates to our Canadian defined benefit pension plans.

Year Ended December 31,
Adjusted Earnings Per Diluted Share:20212020
(In thousands, except per share data)
Adjusted income from operations$983,451$522,003
Interest expense, net268,073226,591
Adjusted other income, net(11,532)(2,395)
Adjusted income before income taxes726,910297,807
Adjusted provision for income taxes149,18264,620
Adjusted net income577,728233,187
Net income (loss) attributable to noncontrolling interests1,020(521)
Adjusted net income attributable to WESCO International, Inc.576,708233,708
Preferred stock dividends57,40830,139
Adjusted net income attributable to common stockholders$519,300$203,569
Diluted shares52,03046,625
Adjusted earnings per diluted share$9.98$4.37

Note: For the year ended December 31, 2021, SG&A expenses, income from operations, other non-operating income, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, a net gain on the divestiture of our legacy utility and data communications businesses in Canada, accelerated trademark amortization expense associated with migrating to our master brand architecture, a curtailment gain, and the related income tax effects. For the year ended December 31, 2020, SG&A expenses, income from operations, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, merger-related fair value adjustments, an out-of-period adjustment related to inventory cost absorption accounting, a gain on sale of an operating branch in the U.S., and the related income tax effects. These non-GAAP financial measures provide a better understanding of our financial results on a comparable basis.

37

Table of Contents

EBITDA, Adjusted EBITDA and Adjusted EBITDA margin %

The following tables reconcile net income attributable to common stockholders to EBITDA, adjusted EBITDA and adjusted EBITDA margin % by segment, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31, 2021
(In thousands)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$543,633$394,031$412,698$(942,388)$407,974
Net income attributable to noncontrolling interests2987221,020
Preferred stock dividends57,40857,408
Provision for income taxes115,510115,510
Interest expense, net268,073268,073
Depreciation and amortization55,99882,87022,44737,239198,554
EBITDA$599,929$476,901$435,145$(463,436)$1,048,539
Other (income) expense, net(1)(1,872)1,31242(47,594)(48,112)
Stock-based compensation expense(2)6,4042,6072,10714,58125,699
Merger-related and integration costs158,484158,484
Net gain on divestitures(8,927)(8,927)
Adjusted EBITDA$604,461$480,820$428,367$(337,965)$1,175,683
Adjusted EBITDA margin %7.9%8.4%8.8%6.5%
(1) Corporate other non-operating income in the calculation of adjusted EBITDA for the year ended December 31, 2021 includes a $36.6 million curtailment gain.
(2) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2021 excludes $5.1 million as such amount is included in merger-related and integration costs.
Year Ended December 31, 2020
(In thousands)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$262,829$217,211$231,678$(641,297)$70,421
Net loss attributable to noncontrolling interests(842)321(521)
Preferred stock dividends30,13930,139
Provision for income taxes22,80322,803
Interest expense, net226,591226,591
Depreciation and amortization35,81137,76522,38025,644121,600
EBITDA$297,798$254,976$254,058$(335,799)$471,033
Other (income) expense, net(1,780)(48)24(591)(2,395)
Stock-based compensation expense(1)4,0801,4031,3369,89516,714
Merger-related and integration costs132,236132,236
Merger-related fair value adjustments15,41122,0006,28243,693
Out-of-period adjustment12,6342,3253,89318,852
Gain on sale of asset(19,816)(19,816)
Adjusted EBITDA$308,327$280,656$265,593$(194,259)$660,317
Adjusted EBITDA margin %5.6%8.4%7.5%5.4%
(1) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2020 excludes $2.6 million as such amount is included in merger-related and integration costs.

Note: EBITDA, Adjusted EBITDA and Adjusted EBITDA margin % are non-GAAP financial measures that provide indicators of our performance and ability to meet debt service requirements. EBITDA is defined as earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA is defined as EBITDA before other non-operating expense (income), non-cash stock-based compensation expense, merger-related and integration costs, merger-related fair value adjustments, an out-of-period adjustment related to inventory cost absorption accounting, and net gains on the divestiture of our legacy utility and data communications businesses in Canada and sale of an operating branch in the U.S. Adjusted EBITDA margin % is calculated by dividing Adjusted EBITDA by net sales.

38

Table of Contents

Liquidity and Capital Resources

Our liquidity needs generally arise from fluctuations in our working capital requirements, information technology investments, capital expenditures, acquisitions and debt service obligations. As of December 31, 2022, we had $664.9 million in available borrowing capacity under our Revolving Credit Facility, after giving effect to outstanding letters of credit and certain borrowings under our international lines of credit, and $50.0 million in available borrowing capacity under our Receivables Facility, which combined with available cash of $294.5 million, provided liquidity of $1.0 billion. Cash included in our determination of liquidity represents cash in certain deposit and interest-bearing investment accounts. We monitor the depository institutions that hold our cash and cash equivalents on a regular basis, and we believe that we have placed our deposits with creditworthy financial institutions.

We regularly review our mix of fixed versus variable rate debt, and we may, from time to time, issue or retire borrowings and/or refinance existing debt in an effort to mitigate the impact of interest rate and foreign exchange rate fluctuations, and to maintain a cost-effective capital structure consistent with our anticipated capital requirements. Economic conditions have contributed to increases in interest rates during 2022. Further increases will raise the rates we pay on our variable rate debt and will contribute to higher interest expense versus prior periods.

At December 31, 2022, approximately 53% of our debt portfolio was comprised of fixed rate debt. We believe our capital structure has an appropriate mix of fixed versus variable rate debt and secured versus unsecured instruments.

Over the next several quarters, it is expected that excess liquidity will be directed primarily at debt reduction, integration activities and potential acquisitions, or returning capital to shareholders through the payment of dividends and our existing share repurchase authorization. We expect to maintain sufficient liquidity through our credit facilities and cash balances. We believe cash provided by operations and financing activities will be adequate to cover our operational and business needs for at least the next twelve months.

We communicate on a regular basis with our lenders regarding our financial and working capital performance, and liquidity position. We were in compliance with all financial covenants and restrictions contained in our debt agreements as of December 31, 2022.

We also measure our ability to meet our debt obligations based on our financial leverage ratio, which was 2.9 as of December 31, 2022 and 3.9 as of December 31, 2021.

39

Table of Contents

The following table sets forth our financial leverage ratio, which is a non-GAAP financial measure, for the periods presented:

Twelve months ended
December 31, 2022December 31, 2021
(In millions of dollars, except ratios)
Net income attributable to common stockholders$803.1$408.0
Net income attributable to noncontrolling interests1.71.0
Preferred stock dividends57.457.4
Provision for income taxes274.5115.5
Interest expense, net294.4268.1
Depreciation and amortization179.0198.5
EBITDA$1,610.1$1,048.5
Other expense (income), net(1)7.0(48.1)
Stock-based compensation expense41.025.7
Merger-related and integration costs67.4158.5
Net gain on divestitures(8.9)
Adjusted EBITDA$1,725.5$1,175.7
As of
December 31, 2022December 31, 2021
Short-term debt and current portion of long-term debt, net$70.5$9.5
Long-term debt, net5,346.04,701.5
Debt discount and debt issuance costs(2)57.970.6
Fair value adjustments to Anixter Senior Notes due 2023 and 2025(2)(0.3)(0.9)
Total debt5,474.14,780.7
Less: Cash and cash equivalents527.3212.6
Total debt, net of cash$4,946.8$4,568.1
Financial leverage ratio2.93.9

(1)    Other non-operating income for the year ended December 31, 2021 includes a $36.6 million curtailment gain.

(2)    Debt is presented in the consolidated balance sheets net of debt discount and debt issuance costs, and includes adjustments to record the long-term debt assumed in the merger with Anixter at its acquisition date fair value.

Note: Financial leverage is a non-GAAP measure of the use of debt. Financial leverage ratio is calculated by dividing total debt, excluding debt discount, debt issuance costs and fair value adjustments, net of cash, by adjusted EBITDA. EBITDA is defined as the trailing twelve months earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA is defined as the trailing twelve months EBITDA before other non-operating expense (income), non-cash stock-based compensation expense, merger-related and integration costs, and net gain on the divestiture of our legacy utility and data communications businesses in Canada.

The undistributed earnings of our foreign subsidiaries amounted to approximately $1,865.4 million at December 31, 2022. Most of these earnings have been taxed in the U.S. under either the one-time tax on the deemed repatriation of undistributed foreign earnings (the “transition tax”), or the GILTI tax regime imposed by the Tax Cuts and Jobs Act of 2017. Future distributions of previously taxed earnings by our foreign subsidiaries should, therefore, result in minimal U.S. taxation. We have elected to pay the transition tax in installments over an eight year period, which ends in 2026. As of December 31, 2022, our remaining liability for the transition tax was $58.8 million. We continue to assert that the remaining undistributed earnings of our foreign subsidiaries are indefinitely reinvested. The distribution of earnings by our foreign subsidiaries in the form of dividends, or otherwise, may be subject to additional taxation. We estimate that additional taxes of approximately $91.4 million would be payable upon the remittance of all previously undistributed foreign earnings as of December 31, 2022, based upon the laws in effect on that date. We believe that we are able to maintain sufficient liquidity for our domestic operations and commitments without repatriating cash from our foreign subsidiaries.

40

Table of Contents

We finance our operating and investing needs primarily with borrowings under our Revolving Credit Facility, Receivables Facility, as well as uncommitted lines of credit entered into by certain of our foreign subsidiaries to support local operations, some of which are overdraft facilities. The Revolving Credit Facility has a borrowing limit of $1,725 million and the purchase limit under the Receivables Facility is $1,625 million. As of December 31, 2022, we had $1,023.6 million and $1,535.0 million outstanding under the Revolving Credit Facility and Receivables Facility, respectively. The maximum borrowing limits of our international lines of credit vary by facility and range between $0.6 million and $31.0 million. Our international lines of credit generally are renewable on an annual basis and certain facilities are fully and unconditionally guaranteed by Wesco Distribution. Accordingly, certain borrowings under these lines directly reduce availability under our Revolving Credit Facility. As of December 31, 2022, there was $10.1 million of borrowing capacity available under the international lines of credit that did not directly reduce availability under the Revolving Credit facility. As of December 31, 2022, we had $7.1 million outstanding under our international lines of credit.

During 2022, we amended our Receivables Facility several times to increase its borrowing capacity from $1,300 million to $1,625 million, extend its maturity date from June 21, 2024 to March 1, 2025, and decrease the interest rate spread from 1.15% to 1.05%.

We also amended our Revolving Credit Facility several times in 2022 to increase its borrowing capacity from $1,200 million to $1,725 million, extend its maturity date from June 22, 2025 to March 1, 2027, and to increase the sub-facility for loans denominated in Canadian dollars from $500 million to $625 million.

The amendments to the Receivables Facility and the Revolving Credit Facility in 2022 also replaced the respective LIBOR-based interest rate options with SOFR-based interest rate options, including term SOFR and daily simple SOFR.

The Anixter 5.50% Senior Notes due 2023 will mature on March 1, 2023 and we expect to use borrowings under our Revolving Credit Facility to redeem the $58.6 million aggregate principal amount of this instrument.

For additional information regarding the amendments to the Receivables Facility and Revolving Credit Facility as well as disclosure of our debt instruments, including our outstanding indebtedness as of December 31, 2022, see Note 9, “Debt” of our Notes to Consolidated Financial Statements.

An analysis of cash flows for 2022 and 2021 follows:

Operating Activities

Net cash provided by operating activities for 2022 totaled $11.0 million, compared to $67.1 million of cash generated in 2021. Net cash provided by operating activities for 2022 included net income of $862.1 million and non-cash adjustments to net income totaling $243.1 million, which were primarily comprised of depreciation and amortization of $179.0 million, stock-based compensation expense of $46.4 million, amortization of debt discount and debt issuance costs of $15.2 million, and deferred income taxes of $1.2 million. Other sources of cash in 2022 included an increase in accounts payable of $552.9 million due to higher purchases of inventory and an increase in other current and noncurrent liabilities of $131.6 million, primarily due to increases in deferred revenue and accrued taxes. Primary uses of cash in 2022 included an increase in inventories of $817.0 million due to supply chain challenges and to support growth in our sales backlog, including project-based business, an increase in trade accounts receivable of $690.6 million resulting from significant sales growth, an increase in other current and noncurrent assets of $153.2 million primarily due to an increase in capitalized costs associated with developing cloud computing arrangements to support our digital transformation initiatives, an increase in other accounts receivable of $54.8 million associated with higher supplier volume rebate income accruals, and a decrease in accrued payroll and benefit costs of $63.1 million due to lower incentive compensation accruals.

Net cash provided by operating activities for 2021 totaled $67.1 million, compared to $543.9 million of cash generated in 2020. Net cash provided by operating activities for 2021 included net income of $466.4 million and non-cash adjustments to net income totaling $132.2 million, which were primarily comprised of depreciation and amortization of $198.6 million, deferred income taxes of $78.3 million, a gain on curtailment of defined benefit pension plans of $36.6 million, as described in Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements, stock-based compensation expense of $30.8 million, amortization of debt discount and debt issuance costs of $19.2 million, and a net gain of $8.9 million resulting from the divestiture of our legacy utility and data communications businesses in Canada, as described in Note 6, “Acquisitions and Disposals” of our Notes to Consolidated Financial Statements. Other sources of cash in 2021 included an increase in accounts payable of $449.6 million due to higher purchases of inventory, an increase in other current and noncurrent liabilities of $190.3 million, and an increase in accrued payroll and benefit costs of $84.2 million due to higher incentive compensation accruals. Primary uses of cash in 2021 included an increase in trade accounts receivable of $531.8 million resulting from significant sales growth, an increase in inventories of $530.7 million to support increased customer demand, an increase in other receivables of $136.7 million associated with higher supplier volume rebate income accruals and an increase in other current and noncurrent assets of $56.3 million.

41

Table of Contents

Investing Activities

Net cash used in investing activities in 2022 was $283.6 million, compared to $2.5 million of net cash provided by investing activities for 2021. Included in 2022 was $255.4 million of cash paid to acquire Rahi Systems, less cash acquired of $68.6 million, as described in Note 6, “Acquisitions and Disposals” of our Notes to Consolidated Financial Statements. Included in 2021 was $56.0 million of net proceeds from the Canadian divestitures. Capital expenditures were $99.4 million in 2022, compared to $54.7 million in 2021.

Net cash provided by investing activities in 2021 was $2.5 million, compared to $3,735.1 million of net cash used in 2020. Included in 2021 was $56.0 million of net proceeds from the Canadian divestitures, as described in Note 6, “Acquisitions and Disposals” of our Notes to Consolidated Financial Statements. Capital expenditures were $54.7 million in 2021, compared to $56.7 million in 2020.

Financing Activities

Net cash provided by financing activities in 2022 was $584.0 million, compared to $310.8 million of net cash used in financing activities in 2021. During 2022, financing activities were primarily comprised of net borrowings of $433.0 million related to our Revolving Credit Facility and net borrowings of $265.0 million related to our Receivables Facility. Financing activities for 2022 also included $57.4 million of dividends paid to holders of our Series A Preferred Stock, $25.8 million of payments for taxes related to the exercise and vesting of stock-based awards, borrowings and repayments of $19.5 million and $19.5 million, respectively, related to our various international lines of credit, and $11.1 million of common stock repurchases.

Net cash used in financing activities in 2021 was $310.8 million, compared to $3,480.7 million of net cash provided by financing activities for 2020. During 2021, financing activities were primarily comprised of the redemption of the $500.0 million and $354.7 million aggregate principal amounts of our 5.375% Senior Notes due 2021 and 5.375% Senior Notes due 2024, respectively, net borrowings of $347.0 million related to our Revolving Credit Facility, and net borrowings of $320.0 million related to our Receivables Facility. Financing activities for 2021 also included $57.4 million of dividends paid to holders of our Series A Preferred Stock, borrowings and repayments of $14.5 million and $34.8 million, respectively, related to our various international lines of credit, and $27.2 million of payments for taxes related to the exercise and vesting of stock-based awards.

The following table summarizes our material cash requirements from known contractual and other obligations at December 31, 2022, including interest, and the expected effect on our liquidity and cash flow in future periods:

20232024 to 20252026 to 20272028 - AfterTotal
(In millions)
Debt, excluding debt discount and debt issuance costs$70.5$3,049.6$1,028.5$1,325.6$5,474.2
Interest on indebtedness(1)339.0563.1256.548.01,206.6
Non-cancelable operating leases158.6244.3156.3170.9730.1
Transition tax installments5.040.213.658.8
Defined benefit pension plans(2)7.07.0
Total$580.1$3,897.2$1,454.9$1,544.5$7,476.7

(1)    Interest on variable rate debt was calculated using the rates and balances outstanding at December 31, 2022.

(2)    As disclosed in Note 13, “Employee Benefit Plans” of our Notes to Consolidated Financial Statements, the majority of our various defined benefit pension plans are non-contributory and, with the exception of the U.S. and Canada, cover substantially all full-time employees in their respective countries. Retirement benefits are provided based on compensation as defined in the plans. Our policy is to fund these plans as required by the Employee Retirement Income Security Act, the Internal Revenue Service and local statutory law. We currently estimate that we will contribute $7.0 million to our foreign pension plans in 2023. Due to the future impact of various market conditions, rates of return and changes in plan participants, we cannot provide a meaningful estimate of our future contributions beyond 2023.

In addition to the cash requirements disclosed in the table above, we expect future uses of cash to include working capital requirements, capital expenditures, investments in our digital capabilities, costs to integrate the operations of Wesco and Anixter and achieve the anticipated synergies of the merger with Anixter, dividend payments to holders of our common stock and Series A Preferred Stock, benefit payments to participants in our deferred compensation plan, and other organic opportunities. Future uses of cash could also include acquisitions of businesses and the repurchase of common or preferred stock. We expect to spend approximately $100 million in 2023 on capital expenditures for information technology investments and to support our global network of branches, warehouses and sales offices.

We expect to fund future uses of cash with a combination of existing cash balances, cash generated from operating activities, borrowings under our revolving credit and accounts receivable securitization facilities, or new issuances of debt.

42

Table of Contents

Purchase orders for inventory requirements and service contracts are not included in the table above. Generally, our purchase orders and contracts contain clauses allowing for cancellation. We do not have significant agreements to purchase material or goods that would specify minimum order quantities.

Liabilities related to unrecognized tax benefits, including interest and penalties, of $122.9 million were excluded from the table above as we cannot reasonably estimate the timing of these potential cash settlements with taxing authorities. See Note 11, “Income Taxes” in our Notes to Consolidated Financial Statements for further information related to unrecognized tax benefits.

Seasonality

Our operating results are not significantly affected by seasonal factors. Sales during the first and fourth quarters have historically been affected by a reduced level of activity due to the impact of weather on projects. Sales typically increase beginning in March, with slight fluctuations per month through October. During periods of economic expansion or contraction, our sales by quarter have varied significantly from this pattern.

Recent Accounting Standards

See Note 2, “Accounting Policies” of our Notes to Consolidated Financial Statements for a description of recently adopted and recently issued accounting standards.

FY 2021 10-K MD&A

SEC filing source: 0000929008-22-000009.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2022-02-25. Report date: 2021-12-31.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the audited consolidated financial statements and notes thereto included in Item 8 of this Annual Report on Form 10-K. The matters discussed herein may contain forward-looking statements that are subject to certain risks and uncertainties that could cause actual results to differ materially from expectations. Certain of these risks are set forth in Item 1A of this Annual Report on Form 10-K.

In addition to the results provided in accordance with U.S. Generally Accepted Accounting Principles ("U.S. GAAP"), our discussion and analysis of financial condition and results of operations includes certain non-GAAP financial measures, which are defined further below. These financial measures include earnings before interest, taxes, depreciation and amortization ("EBITDA"), adjusted EBITDA, adjusted EBITDA margin, financial leverage, free cash flow, adjusted income from operations, adjusted other non-operating expenses (income), adjusted provision for income taxes, adjusted income before income taxes, adjusted net income, adjusted net income attributable to WESCO International, Inc., adjusted net income attributable to common stockholders, and adjusted earnings per diluted share. We believe that these non-GAAP measures are useful to investors as they provide a better understanding of sales performance, and the use of debt and liquidity on a comparable basis. Additionally, certain non-GAAP measures either focus on or exclude items impacting comparability of results, and the related income tax effect of such items, allowing investors to more easily compare our financial performance from period to period. Management does not use these non-GAAP financial measures for any purpose other than the reasons stated above.

Company Overview

WESCO International, Inc. (“Wesco International”) and its subsidiaries (collectively, “Wesco” or the "Company"), headquartered in Pittsburgh, Pennsylvania, is a leading provider of business-to-business distribution, logistics services and supply chain solutions.

On June 22, 2020, we completed our acquisition of Anixter International Inc. ("Anixter"), a Delaware corporation. Pursuant to the terms of the Agreement and Plan of Merger, dated January 10, 2020, by and among Anixter, Wesco and Warrior Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Wesco (“Merger Sub”), Merger Sub was merged with and into Anixter (the “Merger”), with Anixter surviving the Merger and continuing as a wholly owned subsidiary of Wesco. On June 23, 2020, Anixter merged with and into Anixter Inc., with Anixter Inc. surviving to become a wholly owned subsidiary of Wesco.

We employ approximately 18,000 people, maintain relationships with approximately 45,000 suppliers, and serve approximately 140,000 customers worldwide. With nearly 1,500,000 products, end-to-end supply chain services, and extensive digital capabilities, we provide innovative solutions to meet customer needs across commercial and industrial businesses, contractors, government agencies, institutions, telecommunications providers, and utilities. Our innovative value-added solutions include supply chain management, logistics and transportation, procurement, warehousing and inventory management, as well as kitting and labeling, limited assembly of products and installation enhancement. We have approximately 800 branches, warehouses and sales offices with operations in more than 50 countries, providing a local presence for customers and a global network to serve multi-location businesses and multi-national corporations.

In 2021, we established a new corporate brand strategy to adopt a single, master brand architecture. This initiative reflects our corporate integration strategy and simplifies engagement for our customers and suppliers. As a result, we will begin migrating certain legacy sub-brands to the master brand architecture over the course of the next twelve to eighteen months. Due to the strength of its recognition with customers and suppliers, we will continue to use the Anixter brand name as part of the master brand strategy for the foreseeable future.

20

Table of Contents

We have operating segments that are organized around three strategic business units consisting of Electrical & Electronic Solutions ("EES"), Communications & Security Solutions ("CSS") and Utility & Broadband Solutions ("UBS"). These operating segments are equivalent to our reportable segments. See Item 1, “Business” in this Annual Report on Form 10-K for a description of each of our reportable segments and their business activities.

The comparability of the financial performance of our reportable segments for 2021 relative to the prior year is impacted by the fact that 2020 includes the results of operations of Anixter for only the second half of 2020.

Overall Financial Performance

Our financial results for 2021 compared to 2020 reflect the merger with Anixter on June 22, 2020, double-digit sales growth, margin expansion, as well as the realization of integration cost synergies and structural cost takeout actions, partially offset by higher volume-related costs, and selling, general and administrative ("SG&A") payroll and payroll-related expenses consisting of salaries, variable compensation expense and benefit costs. Our 2020 financial results reflected the half year impact of the merger with Anixter, partially offset by unfavorable business conditions caused by the COVID-19 pandemic.

Net sales for 2021 increased $5.9 billion, or 47.8%, over the prior year. In addition to the impact from the Merger, the increase reflects improved economic conditions and strong demand. Cost of goods sold as a percentage of net sales was 79.2% and 81.1% for 2021 and 2020, respectively. The decrease of 190 basis points reflects strong execution on supplier price increases and cost initiatives to offset inflation, along with higher supplier volume rebate income, partially offset by higher expense related to excess and obsolete inventories, including a 14 basis point impact from the write-down to the carrying value of certain personal protective equipment products. Cost of goods sold for 2020 includes merger-related fair value adjustments of $43.7 million, as well as an out-of-period adjustment of $18.9 million related to inventory cost absorption accounting. Adjusted for these amounts, cost of goods sold as a percentage of net sales for 2020 was 80.6%.

Income from operations was $801.9 million for 2021, compared to $347.0 million for 2020. Income from operations as a percentage of net sales was 4.4% for the current year, compared to 2.8% for the prior year. Income from operations for 2021 includes merger-related and integration costs of $158.5 million and a net gain of $8.9 million resulting from the sale of Wesco's legacy utility and data communications businesses in Canada during the first quarter of 2021, which were divested in connection with the Merger. Additionally, we recognized $32.0 million of amortization expense resulting from changes in the estimated useful lives of certain legacy trademarks that are migrating to our master brand architecture, as described in Note 2, "Accounting Policies" of our Notes to Consolidated Financial Statements. Adjusted for these items, income from operations was $983.5 million, or 5.4% of net sales. For 2020, income from operations adjusted for merger-related and integration costs, and merger-related fair value adjustments totaling $175.9 million, an out-of-period adjustment related to inventory cost absorption accounting of $18.9 million, as well as a gain on sale of a U.S. operating branch of $19.8 million was $522.0 million, or 4.2% of net sales. For 2021, income from operations improved compared to the prior year across all segments and reflects sales growth and lower cost of goods sold as a percentage of net sales, as well as the realization of integration cost synergies and structural cost takeout actions. Income from operations for 2021 was negatively impacted by higher volume-related costs, and SG&A payroll and payroll-related expenses consisting of salaries, variable compensation expense and benefit costs, including the impact of reinstating salaries and certain benefits of legacy Wesco employees that had been reduced or suspended in the prior year in response to the COVID-19 pandemic.

Earnings per diluted share for 2021 was $7.84, based on 52.0 million diluted shares, compared to $1.51 for 2020, based on 46.6 million diluted shares. Adjusted for merger-related and integration costs, accelerated trademark amortization expense, net gain on Canadian divestitures, a $36.6 million curtailment gain resulting from the remeasurement of our pension obligations in the U.S. and Canada due to amending certain terms of such defined benefit plans, and the related income tax effects, earnings per diluted share was $9.98 for 2021. Adjusted for merger-related and integration costs, merger-related fair value adjustments, an out-of-period adjustment related to inventory absorption accounting, gain on sale of a U.S. operating branch, and the related income tax effects, earnings per diluted share was $4.37 for 2020. Adjusted earnings per diluted share increased 128% year-over-year.

We experienced a resurgence in demand from many of our customers during 2021. We also experienced some delays in receiving products from our suppliers. We aggressively managed these supply chain issues, which included increasing inventory levels to service our customers. We believe that these issues unfavorably impacted our net sales by approximately 1% in 2021. Our industry and the broader economy are experiencing supply chain challenges, including product delays and backlogged orders, shortages in raw materials and components, labor shortages, transportation challenges, and higher costs. We anticipate that these supply chain challenges, as well as inflationary pressures, will extend into 2022. We intend to continue to actively manage the impact of inflation on our results of operations. We cannot reasonably estimate possible future impacts at this time.

Beginning in 2020, and continuing through 2021, the COVID-19 pandemic had a significant impact on our business, and there continues to be ongoing uncertainties associated with the COVID-19 pandemic, including with respect to the economic

21

Table of Contents

conditions and possible resurgence of COVID-19, potential new variants of the virus, and the availability, effectiveness and public acceptance of treatments and vaccines. As the duration and severity of the COVID-19 pandemic remain uncertain and cannot be predicted, there is significant uncertainty as to the ultimate impact it will have on our business and our results of operations and financial condition. Events and factors relating to the COVID-19 pandemic include limitations on the ability of our suppliers to manufacture or procure the products we sell or to meet delivery requirements and commitments; disruptions to our global supply chains; limitations on the ability of our employees to perform their work due to travel or other restrictions; limitations on the ability of carriers to deliver our products to our customers; limitations on the ability of our customers to conduct their business and purchase our products and services, or pay us on a timely basis; and disruptions to our customers’ purchasing patterns. In response to the COVID-19 pandemic, we have taken actions focused on protecting the health and safety of our employees, which is our top priority.

The products and services that we provide are integral to the daily operations of our customers and accordingly, we have taken actions to maintain the continuity of our operations in response to the pandemic. We have experienced, and may continue to experience, fluctuations in customer demand for certain of our products and services, including changes in project plans or timing due to circumstances affecting our customers, suppliers and other third parties. The full extent to which the COVID-19 pandemic will continue to impact our business and financial results going forward remains uncertain and will depend on many factors outside of our control, including the duration and scope of the pandemic, the emergence and effects of potential new variants, the availability of effective treatments and vaccines (including vaccine boosters), rates of vaccination, imposition of protective public safety measures, the impact of vaccine mandates or other governmental actions, and the overall impact of the COVID-19 pandemic on the global economy and capital markets.

Cash Flow

We generated $67.1 million of operating cash flow during 2021. Net cash provided by operating activities included net income of $466.4 million and adjustments to net income totaling $132.2 million, which were primarily comprised of depreciation and amortization of $198.6 million, deferred income taxes of $78.3 million, a gain on curtailment of defined benefit pension plans of $36.6 million, as described in Note 14, "Employee Benefit Plans" of our Notes to Consolidated Financial Statements, stock-based compensation expense of $30.8 million, amortization of debt discount and debt issuance costs of $19.2 million, and a net gain of $8.9 million resulting from the divestiture of Wesco's legacy utility and data communications businesses in Canada, as described in Note 6, "Acquisitions and Disposals" of our Notes to Consolidated Financial Statements. Operating cash flow also included changes in assets and liabilities of $531.5 million, which were primarily comprised of an increase in trade accounts receivable of $531.8 million resulting from significant sales growth and an increase in inventories of $530.7 million to support increased customer demand while maintaining high service levels against global supply chain challenges due to the pandemic, partially offset by an increase in accounts payable of $449.6 million due to higher purchases of inventory.

Investing activities primarily included $56.0 million of net proceeds from the Canadian divestitures and $54.7 million of capital expenditures mostly consisting of internal-use computer software and information technology hardware to support our digital transformation initiatives, as well as equipment to support of the Company's global network of branches, warehouses and sales offices.

Financing activities were primarily comprised of the redemption of our $500.0 million aggregate principal amount of 5.375% Senior Notes due 2021 (the "2021 Notes") and $354.7 million aggregate principal amount of our 5.375% Senior Notes due 2024 (the "2024 Notes"), borrowings and repayments of $2,353.4 million and $2,006.4 million, respectively, related to our revolving credit facility (the "Revolving Credit Facility"), and borrowings and repayments of $878.0 million and $558.0 million, respectively, related to our accounts receivable securitization facility (the "Receivables Facility"). Financing activities for 2021 also included $57.4 million of dividends paid to holders of our Series A Preferred Stock, net repayments related to our various international lines of credit of approximately $20.3 million, and $27.2 million of payments for taxes related to the exercise and vesting of stock-based awards.

22

Table of Contents

Free cash flow for the years ended December 31, 2021 and 2020 was $93.5 million and $586.1 million, respectively.

The following table sets forth the components of free cash flow:

Twelve Months Ended December 31,
20212020
(In millions)
Cash flow provided by operations$67.1$543.9
Less: Capital expenditures(54.7)(56.7)
Add: Merger-related cash costs81.298.8
Free cash flow$93.5$586.1

Note: The table above reconciles cash flow provided by operations to free cash flow. Free cash flow is a non-GAAP financial measure of liquidity. Capital expenditures are deducted from operating cash flow to determine free cash flow. Free cash flow is available to fund investing and financing activities. For the twelve months ended December 31, 2021 and 2020, we paid certain fees, expenses and other costs related to Wesco's merger with Anixter. Such expenditures have been added back to operating cash flow to determine free cash flow for such periods.

Free cash flow for the current year was lower than the prior year primarily due to changes in working capital, including an increase in trade accounts receivable of $531.8 million resulting from the significant sales growth, an increase in inventories of $530.7 million to support increased customer demand while maintaining high service levels against global supply chain challenges due to the pandemic, partially offset by an increase in accounts payable of $449.6 million due to higher purchases of inventory. Net working capital days improved approximately 6 days from the prior year-end driven by responsively managing working capital in a high-growth, supply-constrained environment.

Financing Availability

On June 1, 2021, we amended our Receivables Facility to increase its borrowing capacity from $1,200 million to $1,300 million, extend its maturity date from June 22, 2023 to June 21, 2024, decrease its LIBOR floor from 0.50% to 0.00% and decrease its interest rate spread from 1.20% to 1.15%. Borrowings under the amended accounts receivable securitization facility and revolving credit facility were used to redeem our $350 million aggregate principal amount of our 2024 Notes, as described in Note 10, "Debt" of our Notes to Consolidated Financial Statements.

As of December 31, 2021, we had $564.8 million in total available borrowing capacity under our Revolving Credit Facility. Available borrowing capacity under our Receivables Facility was $30.0 million. The Revolving Credit Facility and the Receivables Facility mature in June 2025 and June 2024, respectively.

Critical Accounting Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP). The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates that involve a significant level of estimation uncertainty and have had or are reasonably likely to have a material impact on the financial condition or results of operations, including those related to goodwill and indefinite-lived intangible assets, income taxes, and defined benefit pension plans. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. If actual market conditions are less favorable than those projected by management, additional adjustments to reserve items may be required. We believe the following accounting estimates are the most critical to the understanding of our consolidated financial statements as they require subjective or complex judgments by management.

23

Table of Contents

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and indefinite-lived intangible assets are tested for impairment annually during the fourth quarter, or more frequently if triggering events occur, indicating that their carrying values may not be recoverable. We test for goodwill impairment on a reporting unit level. We first assess qualitative factors, including macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, other relevant events such as changes in key personnel, changes in the composition or carrying amount of the net assets of a reporting unit, and changes in in share price, to determine whether it is more likely than not that the fair value of our reporting units are less than their carrying values. If the qualitative assessment indicates that the fair values of our reporting units may not exceed their respective carrying values, then we perform a quantitative test for impairment by comparing the fair value of each reporting unit to its carrying value. We determine the fair values of our reporting units using a discounted cash flow analysis and consideration of market multiples. The discounted cash flow analysis uses certain assumptions, including expected operating margins supported by a combination of historical results, current forecasts, market data and recent economic events, which are categorized within Level 3 of the fair value hierarchy. We use a discount rate that reflects market participants' cost of capital. We evaluate the recoverability of indefinite-lived intangible assets using the relief-from-royalty method based on projected financial information. Significant inputs used in the relief-from-royalty method include projected revenues, discount rates, royalty rates, and applicable income tax rates.

We performed our annual impairment tests of goodwill and indefinite-lived intangible assets during the fourth quarter of 2021 by assessing qualitative factors to determine whether it was more likely than not that the fair values of our reporting units and indefinite-lived intangible assets were less than their respective carrying amounts. As a result of this assessment, we determined that it was more likely than not that the fair values of our reporting units and indefinite-lived intangible assets continued to exceed their respective carrying amounts and, therefore, a quantitative impairment test was unnecessary.

The determination of fair value involves significant management judgment, particularly as it relates to the underlying assumptions and factors around expected operating margins and discount rate. Management applies its best judgment when assessing the reasonableness of financial projections. Fair values are sensitive to changes in underlying assumptions and factors. As a result, there can be no assurance that the estimates and assumptions made for purposes of the annual goodwill and indefinite-lived intangible impairment tests will prove to be an accurate prediction of future results.

See Note 5, "Goodwill and Intangible Assets" of our Notes to Consolidated Financial Statements for additional disclosure regarding goodwill and indefinite-lived intangible assets.

Defined Benefit Pension Plan

Liabilities and expenses for defined benefit pension plans are determined using actuarial methodologies and incorporate significant assumptions, including the interest rate used to discount the future estimated cash flows, the expected long-term rate of return on plan assets, and several assumptions relating to the employee workforce (salary increases, retirement age, and mortality).

Liabilities for defined benefit pension plans are particularly sensitive to changes in the discount rate. At the end of each fiscal year, we determine the discount rate to measure our defined benefit pension plan liabilities at their present value. The discount rate reflects the current rate at which the defined benefit pension plan liabilities could be effectively settled at the end of the year. This rate is estimated using a yield curve based on corporate bond data, which we believe is consistent with observable market conditions and industry standards for developing spot rate curves. The consolidated weighted-average discount rate used to measure the projected benefit obligation of all plans was 2.6% and 2.2% at December 31, 2021 and 2020, respectively. As a sensitivity measure, the effect of a 50-basis-point decline in the assumed discount rate would result in a negligible change in the expense for 2022, and an increase in our projected benefit obligations at December 31, 2021 of $69.0 million. The impact of a 50-basis-point increase in the assumed discount rate would result in a decrease in the expense for 2022 of approximately $4.0 million, and a decrease in our projected benefit obligations at December 31, 2021 of $61.0 million. Changes in the expected long-term rate of return on plan assets and assumptions relating to the employee workforce are less likely to have a material impact on the measurement of defined benefit pension plan liabilities.

See Note 14, "Employee Benefit Plans" of our Notes to Consolidated Financial Statements for additional disclosure regarding defined benefit pension plans.

Income Taxes

We recognize deferred tax assets at amounts that are expected to be realized. To make such determination, management evaluates all positive and negative evidence, including but not limited to, prior, current and future taxable income, tax planning strategies and future reversals of existing taxable temporary differences. A valuation allowance is recognized if it is “more-likely-than-not” that some or all of a deferred tax asset will not be realized. We regularly assess the realizability of deferred tax assets.

24

Table of Contents

We account for uncertainty in income taxes using a "more-likely-than-not" recognition threshold. Due to the subjectivity inherent in the evaluation of uncertain tax positions, the tax benefit ultimately recognized may materially differ from the estimate recognized in the consolidated financial statements. We recognize interest and penalties related to uncertain tax benefits as part of interest expense and income tax expense, respectively.

See Note 12, "Income Taxes" of our Notes to Consolidated Financial Statements for additional disclosure regarding income taxes.

Results of Operations

The following table sets forth the percentage relationship to net sales of certain items in our Consolidated Statements of Income and Comprehensive Income for the periods presented:

Year Ended December 31,
202120202019
Net sales100.0%100.0%100.0%
Cost of goods sold (excluding depreciation and amortization)79.281.181.1
Selling, general and administrative expenses15.315.114.0
Depreciation and amortization1.11.00.8
Income from operations4.42.84.1
Interest expense, net1.51.80.8
Other income, net(0.3)(0.1)
Income before income taxes3.21.03.4
Provision for income taxes0.60.20.7
Net income attributable to WESCO International, Inc.2.60.82.7
Preferred stock dividends0.40.2
Net income attributable to common stockholders2.2%0.6%2.7%

2021 Compared to 2020

Net Sales

The following table sets forth net sales by segment for the periods presented:

Year Ended December 31,
(In thousands)20212020
EES$7,621,263$5,479,760
CSS5,715,2383,323,264
UBS4,881,0113,522,971
Total net sales$18,217,512$12,325,995

Net sales were $18.2 billion for 2021 compared with $12.3 billion for 2020, an increase of 47.8%. The increase primarily reflects the merger with Anixter, along with double-digit growth across all segments, as described below. For the year ended December 31, 2021, pricing related to inflation favorably impacted our net sales by approximately 3%.

EES reported net sales of $7.6 billion for 2021, compared to $5.5 billion for 2020, an increase of 39.1%. In addition to the impact from the Merger, the increase reflects improved economic conditions and strong demand.

CSS reported net sales of $5.7 billion for 2021, compared to $3.3 billion for 2020, an increase of 72.0%. The increase reflects the impact of the Merger and broad-based growth in our security solutions and network infrastructure businesses.

UBS reported net sales of $4.9 billion for 2021, compared to $3.5 billion for 2020, an increase of 38.5%. Along with the impact of the Merger, the increase reflects broad-based growth in our utility business and continued strong demand in our broadband business.

25

Table of Contents

Cost of Goods Sold

Cost of goods sold for 2021 was $14.4 billion compared to $10.0 billion for 2020, an increase of $4.4 billion, reflecting the merger with Anixter. Cost of goods sold as a percentage of net sales was 79.2% and 81.1% for 2021 and 2020, respectively. The decrease of 190 basis points reflects strong execution on supplier price increases and cost initiatives to offset inflation, along with higher supplier volume rebate income, partially offset by higher expense related to excess and obsolete inventories, including write-downs totaling $26.2 million to the carrying value of certain personal protective equipment products. These write-downs of inventory impacted cost of goods sold as a percentage of net sales for 2021 by 14 basis points. Cost of goods sold as a percentage of net sales for 2020 was 80.6% excluding the effect of merger-related fair value adjustments of $43.7 million and an out-of-period adjustment related to inventory cost absorption accounting of $18.9 million.

Selling, General and Administrative Expenses

SG&A expenses primarily include payroll and payroll-related costs, shipping and handling, travel and entertainment, facilities, utilities, information technology expenses, professional and consulting fees, credit losses, gains (losses) on the sale of property and equipment, as well as real estate and personal property taxes. SG&A expenses for 2021 totaled $2.8 billion versus $1.9 billion for 2020. As a percentage of net sales, SG&A expenses were 15.3% and 15.1%, respectively. The increase in SG&A expenses of $932.6 million, or 50.2%, primarily reflects the impact of the merger with Anixter. SG&A expenses for 2021 were favorably impacted by the realization of integration synergies and structural cost takeout actions. SG&A expenses for 2021 include merger-related and integration costs of $158.5 million, as well as a net gain of $8.9 million resulting from the sale of Wesco's legacy utility and data communications businesses in Canada, which were divested during the first quarter of 2021 in connection with the Merger. Adjusted for these amounts, SG&A expenses were 14.5% of net sales for 2021. SG&A expenses for 2020 include $132.2 million of merger-related and integration costs, as well as a gain on the sale of an operating branch in the U.S. of $19.8 million. Adjusted for these amounts, SG&A expenses were 14.2% of net sales for 2020, reflecting lower sales and the merger with Anixter, partially offset by cost reduction actions taken in response to the COVID-19 pandemic that lowered SG&A expenses as a percentage of net sales by approximately 40 basis points.

SG&A payroll and payroll-related expenses for 2021 of $1.8 billion increased by $589.5 million compared to 2020 primarily due to the merger with Anixter. Excluding the impact of the Merger, SG&A payroll and payroll-related expenses in the current year were negatively impacted by higher salaries, variable compensation expense and benefit costs, including the impact of reinstating salaries and certain benefits for legacy Wesco employees that had been reduced or suspended in the prior year in response to the COVID-19 pandemic.

SG&A expenses not related to payroll and payroll-related costs for 2021 were $991.1 million, an increase of $343.1 million compared to 2020 primarily due to the merger with Anixter. Excluding the impact of the Merger, these SG&A expenses for the current year were negatively impacted by higher professional and consulting fees, and information technology expenses resulting from integration activities and digital transformation initiatives. Shipping and handling costs also increased in 2021 due to sales volume growth. The gain on the sale of an operating branch in the U.S., as described above, positively impacted SG&A expenses in 2020.

Depreciation and Amortization

Depreciation and amortization increased $77.0 million to $198.6 million for 2021, compared to $121.6 million for 2020. The current period includes $63.3 million attributable to the amortization of identifiable intangible assets acquired in the merger with Anixter, as well as $32.0 million resulting from changes in the estimated useful lives of certain legacy trademarks that are migrating to our master brand architecture, as described in Note 2, "Accounting Policies" of our Notes to Consolidated Financial Statements. We expect to recognize approximately $10.0 million of amortization expense for trademarks migrating to our master brand architecture in 2022 and $5.3 million thereafter.

Income from Operations

The following tables set forth income from operations by segment for the periods presented:

Year Ended December 31, 2021
(In thousands)EESCSSUBSCorporateTotal
Income from operations$542,059$395,343$412,740$(548,269)$801,873
Year Ended December 31, 2020
(In thousands)EESCSSUBSCorporateTotal
Income from operations$260,207$217,163$231,702$(362,034)$347,038

26

Table of Contents

Income from operations was $801.9 million for 2021, compared to $347.0 million for 2020. The increase of $454.8 million, or 131.1%, primarily reflects the merger with Anixter. For 2021, income from operations improved compared to the prior year across all segments and reflects sales growth and lower cost of goods sold as a percentage of net sales, as well as the realization of integration cost synergies and structural cost takeout actions. Income from operations for 2021 was negatively impacted by higher volume-related costs, and SG&A payroll and payroll-related expenses, as described above. Income from operations for 2021 was not materially effected by higher pricing related to inflation given the offsetting effect of higher costs for certain products.

EES reported income from operations of $542.1 million for 2021, compared to $260.2 million for 2020. The increase of $281.9 million primarily reflects the factors impacting the overall business, as described above. Additionally, income from operations for 2021 was negatively impacted by $4.4 million from the inventory write-down described above, as well as accelerated trademark amortization expense of $13.3 million associated with migrating to our master brand architecture.

CSS reported income from operations of $395.3 million for 2021, compared to $217.2 million for 2020. The increase of $178.1 million primarily reflects the factors impacting the overall business, as described above. Additionally, income from operations for 2021 was negatively impacted by $21.1 million from the inventory write-down described above, as well as accelerated trademark amortization expense of $17.4 million associated with migrating to our master brand architecture.

UBS reported income from operations of $412.7 million for 2021, compared to $231.7 million for 2020. The increase of $181.0 million primarily reflects the factors impacting the overall business, as described above, combined with the benefit from the net gain on the Canadian divestitures.

Corporate, which primarily incurs costs related to treasury, tax, information technology, legal and other centralized functions, had a loss from operations of $548.3 million for 2021, compared to $362.0 million for 2020. The increase of $186.3 million primarily reflects the merger with Anixter, as well as merger-related and integration costs, higher SG&A payroll and payroll-related expenses, professional and consulting fees, and information technology expenses, as described above.

Interest Expense, net

Net interest expense totaled $268.1 million for 2021, compared to $226.6 million for 2020. The increase of $41.5 million, or 18.3%, was driven by financing activity related to the merger with Anixter. As a result of the redemption of our 2024 Notes and amendment to the Receivables Facility, as described in Note 10, "Debt" of our Notes to Consolidated Financial Statements, total interest expense was reduced by approximately $2.0 million in 2021, and is expected to be reduced by $18.0 million per year thereafter based on current interest rates.

Other Income, net

Other non-operating income ("other income, net") totaled $48.1 million for 2021, compared to $2.4 million for 2020, an increase of $45.7 million. As disclosed in Note 14, "Employee Benefit Plans" of our Notes to Consolidated Financial Statements, we recognized net benefits of $53.2 million and $8.2 million associated with the non-service cost components of net periodic pension (benefit) cost for 2021 and 2020, respectively. The non-service cost components of net periodic pension (benefit) cost for 2021 includes a $36.6 million curtailment gain resulting from the remeasurement of our pension obligations in the U.S. and Canada due to amending certain terms of such defined benefit plans. Due to fluctuations in the U.S. dollar against certain foreign currencies, we recorded foreign currency exchange losses of $2.8 million and $4.9 million in 2021 and 2020, respectively.

Income Taxes

The provision for income taxes was $115.5 million for 2021, compared to $22.8 million for 2020, resulting in an effective tax rate of 19.9% and 18.6%, respectively. The effective tax rate for the current year was favorably impacted by a change in the mix of domestic and foreign earnings, tax benefits related to certain foreign derived intangible income, and a reduction in the valuation allowance recorded against certain foreign tax credit carryforwards. The effective tax rate in the prior year was impacted by one-time items associated with the Anixter merger.

Net Income and Earnings per Share

Net income for 2021 was $466.4 million, compared to $100.0 million for 2020.

Net income attributable to noncontrolling interests was $1.0 million for 2021, compared to a net loss of $0.5 million for 2020.

Preferred stock dividends expense, which relates to the fixed-rate reset cumulative perpetual preferred stock, Series A, that was issued in connection with the Merger, was $57.4 million for 2021 compared to $30.1 million for 2020.

Net income and earnings per diluted share attributable to common stockholders were $408.0 million and $7.84, respectively, for 2021, compared with $70.4 million and $1.51, respectively, for 2020. Adjusted for merger-related and integration costs,

27

Table of Contents

accelerated trademark amortization expense, net gain on Canadian divestitures, gain on curtailment of defined benefit pension plans, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $519.3 million and $9.98, respectively, for the year ended December 31, 2021. Adjusted for merger-related and integration costs, merger-related fair value adjustments, an out-of-period adjustment related to inventory cost absorption accounting, gain on sale of a U.S. operating branch, and the related income tax effects, net income and earnings per diluted share attributable to common stockholders were $203.6 million and $4.37, respectively, for the year ended December 31, 2020.

The following tables reconcile income from operations, other non-operating income, provision for income taxes and earnings per diluted share to adjusted income from operations, adjusted other non-operating income, adjusted provision for income taxes and adjusted earnings per diluted share, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31,
Adjusted Income from Operations:20212020
(In thousands)
Income from operations$801,873$347,038
Merger-related and integration costs158,484132,236
Accelerated trademark amortization32,021
Merger-related fair value adjustments43,693
Out-of-period adjustment18,852
Net gain on sale of assets and divestitures(8,927)(19,816)
Adjusted income from operations$983,451$522,003
Year Ended December 31,
Adjusted Other Income, net:20212020
(In thousands)
Other income, net$(48,112)$(2,395)
Curtailment gain36,580
Adjusted other income, net$(11,532)$(2,395)
Year Ended December 31,
Adjusted Provision for Income Taxes:20212020
(In thousands)
Provision for income taxes$115,510$22,803
Income tax effect of adjustments to income from operations and other income, net(1)33,67241,817
Adjusted provision for income taxes$149,182$64,620

(1)    The adjustments to income from operations for the years ended December 31, 2021 and 2020 have been tax effected at rates of 23.5% and 23.9%, respectively. The adjustment to other-non operating income for the year ended December 31, 2021 has been tax effected at a rate of 24.6% as the majority of the curtailment gain relates to our Canadian defined benefit pension plans.

28

Table of Contents

Year Ended December 31,
Adjusted Earnings Per Diluted Share:20212020
(In thousands, except per share data)
Adjusted income from operations$983,451$522,003
Interest expense, net268,073226,591
Adjusted other income, net(11,532)(2,395)
Adjusted income before income taxes726,910297,807
Adjusted provision for income taxes149,18264,620
Adjusted net income577,728233,187
Net income (loss) attributable to noncontrolling interests1,020(521)
Adjusted net income attributable to WESCO International, Inc.576,708233,708
Preferred stock dividends57,40830,139
Adjusted net income attributable to common stockholders$519,300$203,569
Diluted shares52,03046,625
Adjusted earnings per diluted share$9.98$4.37

Note: For the year ended December 31, 2021, income from operations, other non-operating income, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, a net gain on the sale of Wesco's legacy utility and data communications businesses in Canada, accelerated trademark amortization expense associated with migrating to our master brand architecture, a curtailment gain resulting from the remeasurement of our pension obligations in the U.S. and Canada due to amending certain terms of such defined benefit plans, and the related income tax effects. For the year ended December 31, 2020, income from operations, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, merger-related fair value adjustments, an out-of-period adjustment related to inventory cost absorption accounting, a gain on sale of an operating branch in the U.S., and the related income tax effects. These non-GAAP financial measures provide a better understanding of our financial results on a comparable basis.

EBITDA, Adjusted EBITDA and Adjusted EBITDA margin %

The following tables reconcile net income attributable to common stockholders to EBITDA, adjusted EBITDA and adjusted EBITDA margin % by segment, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31, 2021
(In thousands)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$543,633$394,031$412,698$(942,388)$407,974
Net income attributable to noncontrolling interests2987221,020
Preferred stock dividends57,40857,408
Provision for income taxes115,510115,510
Interest expense, net268,073268,073
Depreciation and amortization55,99882,87022,44737,239198,554
EBITDA$599,929$476,901$435,145$(463,436)$1,048,539
Other (income) expense, net(1)(1,872)1,31242(47,594)(48,112)
Stock-based compensation expense(2)6,4042,6072,10714,58125,699
Merger-related and integration costs158,484158,484
Net gain on Canadian divestitures(8,927)(8,927)
Adjusted EBITDA$604,461$480,820$428,367$(337,965)$1,175,683
Adjusted EBITDA margin %7.9%8.4%8.8%6.5%
(1) Corporate other non-operating income in the calculation of adjusted EBITDA for the year ended December 31, 2021 includes a $36.6 million curtailment gain resulting from the remeasurement of our pension obligations in the U.S. and Canada due to amending certain terms of such defined benefit plans.
(2) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2021 excludes $5.1 million as such amount is included in merger-related and integration costs.

29

Table of Contents

Year Ended December 31, 2020
(In thousands)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$262,829$217,211$231,678$(641,297)$70,421
Net loss attributable to noncontrolling interests(842)321(521)
Preferred stock dividends30,13930,139
Provision for income taxes22,80322,803
Interest expense, net226,591226,591
Depreciation and amortization35,81137,76522,38025,644121,600
EBITDA$297,798$254,976$254,058$(335,799)$471,033
Other (income) expense, net(1,780)(48)24(591)(2,395)
Stock-based compensation expense(3)(4)4,0801,4031,3369,89516,714
Merger-related and integration costs132,236132,236
Merger-related fair value adjustments15,41122,0006,28243,693
Out-of-period adjustment(3)12,6342,3253,89318,852
Gain on sale of asset(19,816)(19,816)
Adjusted EBITDA$308,327$280,656$265,593$(194,259)$660,317
Adjusted EBITDA margin %5.6%8.4%7.5%5.4%
(3) Stock-based compensation and the out-of-period adjustment by reportable segment for the year ended December 31, 2020, as previously reported in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, have been reallocated to conform to the current period's presentation.
(4) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2020 excludes $2.6 million as such amount is included in merger-related and integration costs.

Note: EBITDA, Adjusted EBITDA and Adjusted EBITDA margin % are non-GAAP financial measures that provide indicators of our performance and our ability to meet debt service requirements. EBITDA is defined as earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA is defined as EBITDA before foreign exchange and other non-operating expenses (income), non-cash stock-based compensation, costs and fair value adjustments associated with the merger with Anixter, an out-of-period adjustment related to inventory cost absorption accounting, and net gains on the divestiture of Wesco's legacy utility and data communications businesses in Canada and sale of an operating branch in the U.S. Adjusted EBITDA margin % is calculated by dividing Adjusted EBITDA by net sales.

2020 Compared to 2019

Net Sales

The following table sets forth net sales by segment for the periods presented:

Year Ended December 31,
(In thousands)20202019
EES$5,479,760$4,860,541
CSS3,323,264909,496
UBS3,522,9712,588,880
Total net sales$12,325,995$8,358,917

Net sales were $12.3 billion in 2020 compared with $8.4 billion in 2019, an increase of 47.5% due to the merger with Anixter that was completed on June 22, 2020, partially offset by the impact of weakened demand from the COVID-19 pandemic.

EES reported net sales of $5.5 billion in 2020, compared to $4.9 billion in 2019, an increase of 12.7%. The increase reflects the impact of the merger with Anixter, partially offset by weakened global demand in construction and industrial markets due to local and government shutdowns associated with the COVID-19 pandemic, as well as related disruptions to our suppliers and customers that have caused delays to projects.

CSS reported net sales of $3.3 billion in 2020, compared to $0.9 billion in 2019, an increase of 265.4%. The increase reflects the impact of the merger with Anixter. The COVID-19 pandemic had an overall negative impact on CSS sales, although

30

Table of Contents

certain customers and end users are considered essential businesses that saw higher demand such as telecommunications service providers stemming from an increased need for bandwidth products.

UBS reported net sales of $3.5 billion in 2020, compared to $2.6 billion in 2019, an increase of 36.1%. The increase reflects the impact of the merger with Anixter. The COVID-19 pandemic had a limited impact on UBS sales as the primary customers in this segment are public power and investor owned utilities, which are considered essential business and have maintained normal operations.

Cost of Goods Sold

Cost of goods sold for 2020 was $10.0 billion, compared to $6.8 billion for 2019. Cost of goods sold as a percentage of net sales was 81.1% in both 2020 and 2019. Cost of goods sold for 2020 includes merger-related fair value adjustments of $43.7 million, as well as an out-of-period adjustment of $18.9 million related to inventory absorption accounting. Adjusted for these amounts, cost of goods sold as a percentage of net sales for 2020 was 80.6%.

Selling, General and Administrative Expenses

SG&A expenses primarily include costs associated with personnel, shipping and handling, travel, advertising, facilities, utilities and credit losses. SG&A expenses for 2020 were $1.9 billion, an increase of $685.9 million, or 58.5%, from 2019. SG&A expenses as a percentage of net sales increased to 15.1% in 2020 from 14.0% in 2019. SG&A expenses for 2020 include merger-related costs of $132.2 million, as well as a gain on the sale of a U.S. operating branch of $19.8 million. Adjusted for these amounts, SG&A expenses for 2020 were $1.7 billion, or 14.2% of net sales, reflecting the merger with Anixter and lower sales, partially offset by cost reduction actions taken in response to the COVID-19 pandemic. SG&A expenses for 2019 include $3.1 million of merger-related costs.

SG&A payroll expenses for 2020 of $1.2 billion increased by $398.1 million compared to 2019 primarily due to the merger with Anixter. Excluding the impact of the Merger, SG&A payroll expenses were down $35.0 million due to lower salaries and wages, variable compensation expense and benefit costs resulting from the reduction or suspension of salaries and certain benefits for legacy Wesco employees in response to the COVID-19 pandemic.

The remaining SG&A expenses for 2020 of $648.0 million increased by $287.8 million compared to 2019. The increase in the remaining SG&A expenses was primarily due to the impact of the merger with Anixter.

Depreciation and Amortization

Depreciation and amortization increased $59.5 million to $121.6 million in 2020, compared with $62.1 million in 2019. Depreciation and amortization for 2020 includes $33.0 million of amortization attributable to identifiable intangible assets acquired in the merger with Anixter.

Income from Operations

The following tables set forth income from operations by segment for the periods presented:

Year Ended December 31, 2020
(In thousands)EESCSSUBSCorporateTotal
Income from operations$260,207$217,163$231,702$(362,034)$347,038
Year Ended December 31, 2019
(In thousands)EESCSSUBSCorporateTotal
Income from operations$261,788$43,835$184,931$(144,337)$346,217

EES reported income from operations of $260.2 million in 2020, compared to $261.8 million in 2019. The decrease reflects lower demand caused by the COVID-19 pandemic, offset by the merger with Anixter and cost reduction actions taken in response to the lower demand.

CSS reported income from operations of $217.2 million in 2020, compared to $43.8 million in 2019. The increase reflects the impact of the merger with Anixter. The benefits of cost reduction actions taken in response to the COVID-19 pandemic, as well as operating synergies resulting from the business combination, had a favorable impact on income from operations.

UBS reported income from operations of $231.7 million in 2020, compared to $184.9 million in 2019. The increase reflects the impact of the merger with Anixter. The impact of the COVID-19 pandemic on the UBS segment was limited as many of its primary customers are public power and investor owned utilities that are considered essential businesses and have maintained normal operations.

31

Table of Contents

Corporate, which primarily incurs costs related to treasury, tax, information technology, legal and other centralized functions, had a loss from operations of $362.0 million in 2020, compared to $144.3 million in 2019. The increase reflects the merger with Anixter and merger-related costs, as described above, partially offset by lower SG&A payroll expenses resulting from the reduction or suspension of salaries and certain benefits for legacy Wesco employees in response to the COVID-19 pandemic.

Interest Expense, net

Interest expense, net totaled $226.6 million in 2020, compared with $65.7 million in 2019, an increase of 244.8%. The increase in interest expense was driven by financing activity related to the merger with Anixter.

Other, net

Other non-operating income ("other, net") totaled $2.4 million in 2020, compared to $1.6 million in 2019.

Income Taxes

Our effective tax rate was 18.6% in 2020 compared to 21.2% in 2019. The lower effective tax rate in 2020 as compared to 2019 was primarily due to one-time impacts from the merger with Anixter.

Net Income and Earnings per Share

Net income for 2020 was $100.0 million, compared to $222.2 million in 2019.

Net loss attributable to noncontrolling interests in 2020 and 2019 was $0.5 million and $1.2 million, respectively.

Preferred stock dividends expense of $30.1 million in 2020 relates to the fixed-rate reset cumulative perpetual preferred stock, Series A, that was issued in connection with the Merger.

Net income and earnings per diluted share attributable to common stockholders were $70.4 million and $1.51 per diluted share, respectively, in 2020, compared with $223.4 million and $5.14 per diluted share, respectively, in 2019. Adjusted for the items mentioned above, net income and earnings per diluted share attributable to common stockholders were $203.6 million and $4.37 per diluted share, respectively, for the year ended December 31, 2020. Adjusted net income and adjusted earnings per diluted share attributable to common stockholders were $225.9 million and $5.20 per share, respectively, for the year ended December 31, 2019.

The following tables reconcile income from operations, provision for income taxes and earnings per diluted share to adjusted income from operations, adjusted provision for income taxes and adjusted earnings per diluted share, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31,
Adjusted Income from Operations:20202019
(In thousands)
Income from operations$347,038$346,217
Merger-related and integration costs132,2363,130
Merger-related fair value adjustments43,693
Out-of-period adjustment18,852
Gain on sale of asset(19,816)
Adjusted income from operations$522,003$349,347
Year Ended December 31,
Adjusted Provision for Income Taxes:20202019
(In thousands)
Provision for income taxes$22,803$59,863
Income tax effect of adjustments to income from operations(1)41,817664
Adjusted provision for income taxes$64,620$60,527

(1)    The adjustments to income from operations have been tax effected at rates of 23.9% and 21.2% for the years ended December 31, 2020 and 2019, respectively.

32

Table of Contents

Year Ended December 31,
Adjusted Earnings Per Diluted Share:20202019
(In thousands, except per share data)
Adjusted income from operations$522,003$349,347
Interest expense, net226,59165,710
Other, net(2,395)(1,554)
Adjusted income before income taxes297,807285,191
Adjusted provision for income taxes64,62060,527
Adjusted net income233,187224,664
Net loss attributable to noncontrolling interests(521)(1,228)
Adjusted net income attributable to WESCO International, Inc.233,708225,892
Preferred stock dividends30,139
Adjusted net income attributable to common stockholders$203,569$225,892
Diluted shares46,62543,487
Adjusted earnings per diluted share$4.37$5.20

Note: For the twelve months ended December 31, 2020, income from operations, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related and integration costs, merger-related fair value adjustments, an out-of-period adjustment related to inventory absorption accounting, gain on sale of a U.S. operating branch, and the related income tax effects. For the twelve months ended December 31, 2019, income from operations, the provision for income taxes and earnings per diluted share have been adjusted to exclude merger-related costs, and the related income tax effects. These non-GAAP financial measures provide a better understanding of our financial results on a comparable basis.

EBITDA, Adjusted EBITDA and Adjusted EBITDA margin %

The following tables reconcile net income attributable to common stockholders to EBITDA, adjusted EBITDA and adjusted EBITDA margin % by segment, which are non-GAAP financial measures, for the periods presented:

Year Ended December 31, 2020
(In thousands)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$262,829$217,211$231,678$(641,297)$70,421
Net loss attributable to noncontrolling interests(842)321(521)
Preferred stock dividends30,13930,139
Provision for income taxes22,80322,803
Interest expense, net226,591226,591
Depreciation and amortization35,81137,76522,38025,644121,600
EBITDA$297,798$254,976$254,058$(335,799)$471,033
Other (income) expense, net(1,780)(48)24(591)(2,395)
Stock-based compensation expense(1)(2)4,0801,4031,3369,89516,714
Merger-related and integration costs132,236132,236
Merger-related fair value adjustments15,41122,0006,28243,693
Out-of-period adjustment(1)12,6342,3253,89318,852
Gain on sale of asset(19,816)(19,816)
Adjusted EBITDA$308,327$280,656$265,593$(194,259)$660,317
Adjusted EBITDA margin %5.6%8.4%7.5%5.4%
(1) Stock-based compensation and the out-of-period adjustment by reportable segment for the year ended December 31, 2020, as previously reported in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, have been reallocated to conform to the current period's presentation.
(2) Stock-based compensation expense in the calculation of adjusted EBITDA for the year ended December 31, 2020 excludes $2.6 million as such amount is included in merger-related and integration costs.

33

Table of Contents

Year Ended December 31, 2019
(In thousands)EESCSSUBSCorporateTotal
Net income attributable to common stockholders$264,570$43,835$184,931$(269,910)$223,426
Net loss attributable to noncontrolling interests(1,228)(1,228)
Provision for income taxes59,86359,863
Interest expense, net65,71065,710
Depreciation and amortization28,5697,15513,58312,80062,107
EBITDA$291,911$50,990$198,514$(131,537)$409,878
Other income, net(1,554)(1,554)
Stock-based compensation expense1,1167723117,63819,062
Merger-related costs3,1303,130
Adjusted EBITDA$291,473$51,067$198,745$(110,769)$430,516
Adjusted EBITDA margin %6.0%5.6%7.7%5.2%

Note: EBITDA, Adjusted EBITDA and Adjusted EBITDA margin % are non-GAAP financial measures that provide indicators of our performance and our ability to meet debt service requirements. EBITDA is defined as earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA is defined as EBITDA before foreign exchange and other non-operating expenses (income), non-cash stock-based compensation, merger-related and integration costs, merger-related fair value adjustments, an out-of-period adjustment related to inventory absorption accounting, and gain on sale of a U.S. operating branch. Adjusted EBITDA margin % is calculated by dividing Adjusted EBITDA by net sales.

Liquidity and Capital Resources

Our liquidity needs generally arise from fluctuations in our working capital requirements, information technology investments, capital expenditures, acquisitions and debt service obligations. As of December 31, 2021, we had $564.8 million in available borrowing capacity under our Revolving Credit Facility, after giving effect to outstanding letters of credit and certain borrowings under the Company's international lines of credit, and $30.0 million in available borrowing capacity under our Receivables Facility, which combined with available cash of $69.6 million, provided liquidity of $664.4 million. Cash included in our determination of liquidity represents cash in certain deposit and interest bearing investment accounts. We monitor the depository institutions that hold our cash and cash equivalents on a regular basis, and we believe that we have placed our deposits with creditworthy financial institutions.

We regularly review our mix of fixed versus variable rate debt, and we may, from time to time, issue or retire borrowings and/or refinance existing debt in an effort to mitigate the impact of interest rate and foreign exchange rate fluctuations, and to maintain a cost-effective capital structure consistent with our anticipated capital requirements. At December 31, 2021, approximately 60% of our debt portfolio was comprised of fixed rate debt.

Since the merger with Anixter, we have used cash and the net proceeds from the divestiture of Wesco's legacy utility and data communications businesses in Canada to reduce our debt, net of cash, by approximately $357.2 million. Over the next several quarters, it is expected that excess liquidity will be directed primarily at debt reduction, merger-related integration activities and potential acquisitions, and we expect to maintain sufficient liquidity through our credit facilities and cash balances. We believe cash provided by operations and financing activities will be adequate to cover our operational and business needs for at least the next twelve months.

We communicate on a regular basis with our lenders regarding our financial and working capital performance, and liquidity position. We were in compliance with all financial covenants and restrictions contained in our debt agreements as of December 31, 2021.

We also measure our ability to meet our debt obligations based on our financial leverage ratio, which was 3.9 as of December 31, 2021 and, on a pro forma basis, 5.3 as of December 31, 2020.

34

Table of Contents

The following table sets forth our financial leverage ratio, which is a non-GAAP financial measure, for the periods presented:

Twelve months ended
December 31, 2021December 31, 2020
ReportedPro Forma(1)
(In millions of dollars, except ratios)
Net income attributable to common stockholders$408.0$115.6
Net income (loss) attributable to noncontrolling interests1.0(0.5)
Preferred stock dividends57.430.1
Provision for income taxes115.555.7
Interest expense, net268.1255.8
Depreciation and amortization198.5153.5
EBITDA$1,048.5$610.2
Other (income) expense, net(2)(48.1)4.6
Stock-based compensation25.734.7
Merger-related costs and fair value adjustments158.5206.7
Out-of-period adjustment18.9
Net gain on sale of assets and Canadian divestitures(8.9)(19.8)
Adjusted EBITDA(3)$1,175.7$855.3
December 31, 2021December 31, 2020
Short-term debt and current portion of long-term debt, net$9.5$528.8
Long-term debt, net4,701.54,370.0
Debt discount and debt issuance costs(4)70.688.2
Fair value adjustments to Anixter Senior Notes due 2023 and 2025(4)(0.9)(1.7)
Total debt4,780.74,985.3
Less: Cash and cash equivalents212.6449.1
Total debt, net of cash$4,568.1$4,536.2
Financial leverage ratio3.95.3

(1)    EBITDA and adjusted EBITDA for the twelve months ended December 31, 2020 gives effect to the combination of Wesco and Anixter as if it had occurred at the beginning of the respective trailing twelve month period.

(2)    Other non-operating income for the year ended December 31, 2021 includes a $36.6 million curtailment gain resulting from the remeasurement of our pension obligations in the U.S and Canada due to amending certain terms of such defined benefit plans.

(3)    Adjusted EBITDA includes the financial results of Wesco’s legacy utility and data communications businesses in Canada, which were divested in the first quarter of 2021 under a Consent Agreement with the Competition Bureau of Canada.

(4)    Debt is presented in the consolidated balance sheets net of debt discount and debt issuance costs, and includes adjustments to record the long-term debt assumed in the merger with Anixter at its acquisition date fair value.

Note: Financial leverage ratio is a non-GAAP measure of the use of debt. Financial leverage ratio is calculated by dividing total debt, excluding debt discount, debt issuance costs and fair value adjustments, less cash and cash equivalents, by adjusted EBITDA. EBITDA is defined as the trailing twelve months earnings before interest, taxes, depreciation and amortization. Adjusted EBITDA is defined as the trailing twelve months EBITDA before foreign exchange and other non-operating expenses (income), non-cash stock-based compensation, costs and fair value adjustments related to the merger with Anixter, an out-of-period adjustment related to inventory absorption accounting, and net gains on the divestiture of Wesco's legacy utility and data communications businesses in Canada and sale of an operating branch in the U.S.

35

Table of Contents

The undistributed earnings of our foreign subsidiaries amounted to approximately $1,851.6 million at December 31, 2021. Most of these earnings have been taxed in the U.S. under either the one-time tax on the deemed repatriation of undistributed foreign earnings (the "transition tax"), or the GILTI tax regime imposed by the Tax Cuts and Jobs Act of 2017. Future distributions of previously taxed earnings by our foreign subsidiaries should, therefore, result in minimal U.S. taxation. We have elected to pay the transition tax in installments over eight years. As of December 31, 2021, our liability for the transition tax was $60.7 million. We continue to assert that the remaining undistributed earnings of our foreign subsidiaries are indefinitely reinvested. The distribution of earnings by our foreign subsidiaries in the form of dividends, or otherwise, may be subject to additional taxation. We estimate that additional taxes of approximately $82.2 million would be payable upon the remittance of all previously undistributed foreign earnings as of December 31, 2021, based upon the laws in effect on that date. We believe that we are able to maintain sufficient liquidity for our domestic operations and commitments without repatriating cash from our foreign subsidiaries.

We finance our operating and investing needs primarily with borrowings under our Revolving Credit Facility, Receivables Facility, as well as uncommitted lines of credit entered into by certain of our foreign subsidiaries to support local operations, some of which are overdraft facilities. The Revolving Credit Facility has a borrowing limit of $1,200 million and the purchase limit under the Receivables Facility is $1,300 million. As of December 31, 2021, we had $597.0 million and $1,270.0 million outstanding under the Revolving Credit Facility and Receivables Facility, respectively. The maximum borrowing limits of our international lines of credit vary by facility and range between $0.6 million and $31.0 million. Our international lines of credit generally are renewable on an annual basis and certain facilities are fully and unconditionally guaranteed by Wesco Distribution. Accordingly, certain borrowings under these lines directly reduce availability under our Revolving Credit Facility. As of December 31, 2021, we had $7.4 million outstanding under our international lines of credit.

On June 1, 2021, we amended our Receivables Facility to increase its borrowing capacity from $1,200 million to $1,300 million, extend its maturity date from June 22, 2023 to June 21, 2024, decrease its LIBOR floor from 0.50% to 0.00% and decrease its interest rate spread from 1.20% to 1.15%. Borrowings under the amended accounts receivable securitization facility and revolving credit facility were used to redeem the $350 million aggregate principal amount of our 2024 Notes, as described below.

In an effort to lower our cost of borrowing, on January 14, 2021 and July 2, 2021, we redeemed the $500 million aggregate principal amount of our 2021 Notes and $350 million aggregate principal amount of our 2024 Notes, respectively. These redemptions were funded with available cash, as well as borrowings under our Receivables Facility and Revolving Credit Facility.

On June 12, 2020, we issued $1,500 million aggregate principal amount of 7.125% Senior Notes due 2025 (the “2025 Notes”) and $1,325 million aggregate principal amount of 7.250% Senior Notes due 2028 (the “2028 Notes” and, together with the 2025 Notes, the “Notes”). We used the net proceeds from the issuance of the Notes, together with borrowings under our Revolving Credit Facility and Receivables Facility and existing cash on hand, to finance the Merger and the other transactions contemplated by the Merger Agreement.

On April 30, 2020, in connection with the Merger, we simultaneously entered into tender offers and consent solicitations with respect to Anixter Inc.’s then outstanding $350.0 million aggregate principal amount of 5.50% Senior Notes due 2023 (the “Anixter 2023 Senior Notes”), and $250.0 million aggregate principal amount of 6.00% Senior Notes due 2025 (the “Anixter 2025 Senior Notes” and, together with the Anixter 2023 Senior Notes, the "Anixter Senior Notes"). Upon expiration and settlement of the tender offers and consent solicitations, $62.8 million in aggregate principal amount of the Anixter Senior Notes remain outstanding.

For additional disclosure regarding our debt instruments, including our outstanding indebtedness as of December 31, 2021, see Note 10, "Debt" of our Notes to Consolidated Financial Statements.

An analysis of cash flows for 2021 and 2020 follows:

Operating Activities

Net cash provided by operating activities for 2021 totaled $67.1 million, compared with $543.9 million of cash generated in 2020. Net cash provided by operating activities included net income of $466.4 million and adjustments to net income totaling $132.2 million, which were primarily comprised of depreciation and amortization of $198.6 million, deferred income taxes of $78.3 million, a gain on curtailment of defined benefit pension plans of $36.6 million, as described in Note 14, "Employee Benefit Plans" of our Notes to Consolidated Financial Statements, stock-based compensation expense of $30.8 million, amortization of debt discount and debt issuance costs of $19.2 million, and a net gain of $8.9 million resulting from the divestiture of Wesco's legacy utility and data communications businesses in Canada, as described in Note 6, "Acquisitions and Disposals" of our Notes to Consolidated Financial Statements. Other sources of cash in 2021 were generated from an increase in accounts payable of $449.6 million due to higher purchases of inventory, an increase in other current and noncurrent liabilities of $190.3 million, and an increase in accrued payroll and benefit costs of $84.2 million due to higher incentive

36

Table of Contents

compensation accruals. Primary uses of cash in 2021 included an increase in trade accounts receivable of $531.8 million resulting from significant sales growth, an increase in inventories of $530.7 million to support increased customer demand, an increase in other receivables of $136.7 million associated with higher supplier volume rebate income accruals and an increase in other current and noncurrent assets of $56.3 million.

Net cash provided by operating activities for 2020 totaled $543.9 million, compared with $224.4 million of cash generated in 2019. Cash provided by operating activities included net income of $100.0 million and adjustments to net income totaling $113.7 million. Other sources of cash in 2020 were generated from a decrease in inventories of $203.8 million, an increase in other current and noncurrent liabilities of $78.2 million, an increase in accrued payroll and benefit costs of $75.6 million, and a decrease in trade accounts receivable of $47.9 million. Primary uses of cash in 2020 included a decrease in accounts payable of $54.1 million and an increase in other current and noncurrent assets of $21.2 million.

Investing Activities

Net cash provided by investing activities in 2021 was $2.5 million, compared to $3,735.1 million of net cash used in 2020. Included in 2021 was $56.0 million of net proceeds from the Canadian divestitures, as described in Note 6, "Acquisitions and Disposals" of our Notes to Consolidated Financial Statements. Capital expenditures were $54.7 million in 2021, compared to $56.7 million in 2020. Proceeds from the sale of assets were $5.2 million and $6.7 million in 2021 and 2020, respectively. Other investing activities in 2021 included $3.9 million of cash outflows.

Net cash used in investing activities in 2020 was $3,735.1 million, compared with $60.8 million in 2019. Included in 2020 was $3.7 billion to fund a portion of the merger with Anixter, as described in Note 6, "Acquisitions and Disposals" of our Notes to Consolidated Financial Statements. In 2019, we made payments of $27.6 million to acquire Sylvania Lighting Solutions ("SLS"). Capital expenditures were $56.7 million in 2020, compared to $44.1 million in 2019. Proceeds from the sale of assets were $6.7 million and $16.8 million in 2020 and 2019, respectively. Other investing activities in 2020 included $22.4 million of cash inflows.

Financing Activities

Net cash used in financing activities in 2021 was $310.8 million, compared with $3,480.7 million of net cash provided by financing activities for 2020. During 2021, financing activities primarily consisted of the redemption of the $500.0 million and $354.7 million aggregate principal amount of our 2021 Notes and 2024 Notes, respectively, borrowings and repayments of $2,353.4 million and $2,006.4 million, respectively, related to our Revolving Credit Facility, and borrowings and repayments of $878.0 million and $558.0 million, respectively, related to our Receivables Facility. Financing activities for 2021 also included $57.4 million of dividends paid to holders of our Series A Preferred Stock, net repayments related to our various international lines of credit of approximately $20.3 million, and $27.2 million of payments for taxes related to the exercise and vesting of stock-based award.

Net cash provided by financing activities in 2020 was $3,480.7 million, compared with $109.8 million of net cash used in financing activities for 2019. During 2020, financing activities consisted of $2,815.0 million of net proceeds from the issuance of senior unsecured notes to finance a portion of the merger with Anixter, borrowings and repayments of $1.2 billion and $948.0 million, respectively, related to our prior and new revolving credit facilities, as well as borrowings and repayments of $1.1 billion and $565.0 million, respectively, related to our prior and amended accounts receivable securitization facilities. Financing activities for 2020 also included net repayments related to our various international lines of credit of $9.7 million, $80.2 million of debt issuance costs associated with financing the merger with Anixter, and $30.1 million of dividends paid to holders of our Series A Preferred Stock.

37

Table of Contents

The following table summarizes our material cash requirements from known contractual and other obligations at December 31, 2021, including interest, and the expected effect on our liquidity and cash flow in future periods.

20222023 to 20242025 to 20262027 - AfterTotal
(In millions)
Debt, excluding debt discount and debt issuance costs$9.5$1,337.7$2,107.5$1,325.9$4,780.6
Interest on indebtedness(1)231.4450.0250.4144.11,075.9
Non-cancelable operating leases152.9220.5113.7136.1623.2
Transition tax installments4.419.736.660.7
Defined benefit pension plans(2)10.810.8
Total$409.0$2,027.9$2,508.2$1,606.1$6,551.2

(1)    Interest on variable rate debt was calculated using the rates and balances outstanding at December 31, 2021.

(2)    As disclosed in Note 14, "Employee Benefit Plans" of our Notes to Consolidated Financial Statements, the majority of our various defined benefit pension plans are non-contributory and, with the exception of the U.S. and Canada, cover substantially all full-time employees in their respective countries. Retirement benefits are provided based on compensation as defined in the plans. Our policy is to fund these plans as required by the Employee Retirement Income Security Act, the Internal Revenue Service and local statutory law. We currently estimate that we will contribute $10.8 million to our foreign pension plans in 2022. Due to the future impact of various market conditions, rates of return and changes in plan participants, we cannot provide a meaningful estimate of our future contributions beyond 2022.

In addition to the cash requirements disclosed in the table above, we expect future uses of cash to include working capital requirements, capital expenditures, investments in our digital capabilities, costs to integrate the operations of Wesco and Anixter and achieve the anticipated synergies of the Merger, dividend payments to holders of our Series A Preferred Stock, benefit payments to participants in our deferred compensation plan, and other organic opportunities. Future uses of cash could also include acquisitions of businesses and the repurchase of common or preferred stock. We expect to spend approximately $45 million in 2022 on capital expenditures for information technology investments and to support our global network of branches, warehouses and sales offices.

We expect to fund future uses of cash with a combination of existing cash balances, cash generated from operating activities, borrowings under our revolving credit and accounts receivable securitization facilities, or new issuances of debt.

Purchase orders for inventory requirements and service contracts are not included in the table above. Generally, our purchase orders and contracts contain clauses allowing for cancellation. We do not have significant agreements to purchase material or goods that would specify minimum order quantities.

Liabilities related to unrecognized tax benefits, including interest and penalties, of $118.2 million were excluded from the table above as we cannot reasonably estimate the timing of these potential cash settlements with taxing authorities. See Note 12, "Income Taxes" in our Notes to Consolidated Financial Statements for further information related to unrecognized tax benefits.

Seasonality

Our operating results are not significantly affected by seasonal factors. Sales during the first and fourth quarters are usually affected by a reduced level of activity due to the impact of weather on projects. Sales typically increase beginning in March, with slight fluctuations per month through October. During periods of economic expansion or contraction, our sales by quarter have varied significantly from this pattern.

Impact of Recently Issued Accounting Standards

See Note 2, "Accounting Policies" of the Notes to Consolidated Financial Statements for information regarding the effect of new accounting pronouncements.