RESIDEO TECHNOLOGIES, INC. (REZI) Business

Item 1. Business.

General

As used herein, unless the context otherwise dictates, the term “Resideo”, the “Company”, “we”, “us”, or “our” means Resideo Technologies, Inc. and its consolidated subsidiaries. Our common stock began trading under the ticker symbol “REZI” on the New York Stock Exchange (“NYSE”) on October 29, 2018.

We separated from Honeywell International Inc. (“Honeywell”) in 2018, becoming an independent publicly traded company as a result of a pro rata distribution of our common stock to stockholders of Honeywell (the “Honeywell Spin-Off”).

Description of Business

We are a global manufacturer, developer, and distributor of technology-driven sensing and controls products and solutions that help homeowners and businesses stay connected and in control of their comfort, security, energy use, and smart living. We are a leading player in key product markets including home heating, ventilation, and air conditioning controls; smoke and carbon monoxide detection home safety and fire suppression; and security. Our global footprint serves residential and commercial end-markets. Our solutions and services can be found in over 150 million residential and commercial spaces globally, with tens of millions of new devices sold annually.

We operate in large markets that sit at the intersection of multiple secular growth trends. We believe the increased desire for critical and cost-effective comfort, energy management, and actionable safety and security solutions in residential and commercial spaces, combined with the long-term impacts of energy transitions, are driving investment in the types of products and solutions we provide.

Our primary focus is on the professional channel where we are a trusted partner to approximately 100 thousand professional contractors, installers, dealers, and integrators in the HVAC, security, fire, electrical, connected home, and home comfort markets (“professionals”). Our global scale, breadth of product offerings, innovation heritage, and differentiated service and support has enabled our trusted relationship with professionals and has been a key driver of our success.

We manage our business operations through two business segments, Products and Solutions and ADI Global Distribution. On July 30, 2025, we announced our intention to separate the ADI Global Distribution segment through a tax-free spin-off to our shareholders (the “ADI Spin-Off”). Following the completion of the announced future ADI Spin-Off, the Products and Solutions segment would continue to operate as Resideo and ADI Global Distribution would become an independent public company.

Products and Solutions: Our products and solutions for comfort, energy management, safety, and security benefit from trusted, well-established branded offerings such as Braukmann, BRK, First Alert, Honeywell Home, Resideo, and others. Our offerings include temperature and humidity control, water and air solutions, smoke and carbon monoxide detection home safety products, residential and small business security products, video cameras, other home-related lifestyle convenience solutions, cloud infrastructure, installation and maintenance tools, and related software. We also sell components to manufacturers of water heaters, heat pumps, and boilers. Through our whole home presence, we are an enabler of home connectivity with over 14 million connected customers. Our connected solutions harness data to provide control, visibility, insights, and alerts to the end user. Our comprehensive product suite has also allowed us to develop and sustain long-standing partnerships with professionals who have relied on our selection and availability of products and configured solutions to help them succeed and grow their businesses.

ADI Global Distribution: Our ADI Global Distribution segment is a leading, global specialty distributor of professionally installed low-voltage products, including security and audio-visual (“AV”) solutions, serving commercial and residential markets through an omnichannel go-to-market platform. ADI Global Distribution sells primarily to licensed professional installers, dealers, and integrators. We offer an expansive list of products from leading suppliers across key specialty low-voltage categories. ADI complements our third-party supplier products with a suite of exclusive brands and services offerings.

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Competition

Our industries and markets are highly competitive in both our Products and Solutions and ADI Global Distribution business segments, where we compete with global, national, regional, and local providers for our products, services and solutions, including manufacturers, distributors, service providers, retailers, and online commerce providers, as well as newer entrants to the market with non-traditional business and customer service models or disruptive technologies and products, including cable, telecommunications, and technology companies competing in the connected home space as well as smaller market entrants that offer control capabilities among their products, applications, and services and have ongoing development efforts to address the broader connected home market.

Factors influencing our competitive position in the industry include product and service innovation, our reputation and the reputation of our brands, sales and marketing programs, customer relationships, product performance, reliability and warranty, quality and breadth of product training and events, product availability, speed and accuracy of delivery, service and price, technical support, and credit availability.

Materials and Suppliers

Purchased materials used in our manufacture of products in Products and Solutions include copper, steel, aluminum, plastics, printed circuit boards (“PCB”), semiconductors, and passive electronics. Purchased materials cover a wide range of supplier value-add from raw materials and single components to subassemblies and complete finished goods, and there are considerable expenditures on both commercial off-the-shelf and make-to-print items. Although execution of material substitutions or supplier changes may be resource intensive and can cause delays and other inefficiencies, alternatives may exist in the event that a supplier becomes unable to provide material. With respect to our ADI Global Distribution business, we rely on key suppliers of branded products to deliver certain products for resale to our customers who may purchase based on job specifications or otherwise based on brand reputation. Both our third-party and exclusive brand suppliers may be impacted by raw material price fluctuations, the ability of key suppliers (or factories) to meet quality and delivery requirements, and catastrophic events can increase the cost and affect the supply of our products and services and impact our ability to meet commitments to customers. Tariffs, sanctions, and other barriers to trade could adversely affect our suppliers which could in turn negatively impact our material costs and operations.

Manufacturing

Our Products and Solutions business operates manufacturing and distribution facilities throughout the world, including sites in Mexico, the Czech Republic, Hungary, the United States (“U.S.”), Germany, the United Kingdom, Netherlands, and China. A significant percentage of our Products and Solutions revenue is derived from products manufactured in our own facilities, with the remainder being “buy to sell” (finished products purchased directly from other manufacturers) or sourced from third-party contract manufacturers. Major activities and competencies in our manufacturing operations include PCB assembly, injection molding, surface mount technologies, automatic and manual assembly and test, electrotechnical assembly and test, die casting and machining, calibration, and final test. We source raw materials and commodities, electronic components and assemblies, mechanical components, and assemblies from a wide range of third-party suppliers worldwide. With respect to our ADI Global Distribution business, we rely on third-party manufacturers to supply both third-party branded and exclusive branded products. A significant percentage of our exclusive branded products are sourced with manufacturers located in Asia.

Regulatory and Environmental Compliance and Regulatory Capital Expenditures

We are subject to various federal, state, local, and foreign government requirements relating to environmental health and safety protection standards and permitting, labeling, and other requirements regarding, among other things, electronic and wireless communications, air emissions, wastewater discharges, the use, handling, and disposal of hazardous or toxic materials, remediation of environmental contamination, data privacy and security, cybersecurity, telemarketing, email marketing, other forms of online advertising and consumer protection, licensing, working conditions for and compensation of our employees and others. Our business may also be affected by changes in governmental regulation of energy efficiency and conservation standards and product safety regulations. These and other laws and regulations impact the manner in which we conduct our business, and changes in legislation or government policies can affect our worldwide operations, both favorably and unfavorably. For a more detailed description of the various laws and regulations that affect our business, refer to Item 1A. Risk Factors.

Our efforts to comply with numerous federal, state, and local laws and regulations applicable to our business and products often results in capital expenditures. We make capital expenditures to design, maintain, and upgrade our products to

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comply with or exceed standards applicable to the industries in which they compete. Our ongoing environmental compliance programs also result in capital expenditures. As of December 31, 2025, we have recorded a liability for environmental investigation and remediation of approximately $22 million related to sites owned and operated by Resideo. Regulatory and environmental considerations are a part of all significant capital expenditure decisions; however, expenditures in 2025 related solely to regulatory compliance were not material. It is management’s opinion that the amount of any future capital expenditures related to compliance with any individual regulation or grouping of related regulations will not have a material adverse effect on our financial results or competitive position in any one year. Refer to Note 15. Commitments and Contingencies of the Notes to Consolidated Financial Statements.

Human Capital

As of December 31, 2025, we employed approximately 14,800 employees in 35 countries, of which about 4,100 employees were located in the U.S. and 6,400 in Mexico. Approximately 3% of Resideo’s U.S. employees and 7% non-U.S. employees are covered under collective bargaining agreements. We believe relations with our workforce are good.

Talent Acquisition, Management, and Development: We have a robust recruiting model to attract all levels of talent across the regions where we operate. Our model includes (1) attract, develop, and retain an inclusive workforce, (2) foster a winning culture, and (3) be identified as a company of choice by our customers and the communities we serve. We continue to assess the needs of the business and identify inclusive organizations to partner with that promote a pipeline of diverse talent. Our inclusive outreach includes contacting job boards and inclusive partnerships, such as Society of Women Engineers (“SWE”) and Direct Employers Association. We have eliminated degree requirements from the majority of our professional roles to increase the breadth of our applicant talent pool unless required by local legislation.

Internally, strategic talent reviews and succession planning occur on an annual basis, globally and across all business areas. In addition, we provide regular trainings to our people managers.

At Resideo, we are committed to employee growth and development and are proud to offer employees a wide range of opportunities. A key offering is LinkedIn Learning, enabling skills development through thousands of courses. In 2025 we introduced a monthly webinar (Empowering For Success) geared toward supporting our professional population with practical ways to support career development. Our employees also have access to a formal mentor program that connects team members with experienced professionals.

Additionally, our quarterly leadership development series (People Leadership Series), offers valuable insights from executive leaders and subject matter experts to reinforce our commitment to informed, inclusive and effective leaders across the organization.

We conduct three performance review discussions throughout the year and refer to them as the “Pulse.” We continue to leverage performance ratings as part of the final “Pulse” conversation. The purpose of the rating is to drive accountability, strengthen our succession planning process and establish “pay-for-performance” standards.

Our annual Employee Voice Survey allows each function in our Company to better understand engagement across the organization. Each sub-organization is tasked with creating an action plan based on feedback received to help increase engagement. We also hosted our first non-technical company-wide Hackathon to impact the employee experience. In 2025, we continued to support and evolve our six employee resource groups which are available to all employees: Women, LGBTQIA+, Black, Latino, Veterans, and People with Differing Abilities.

Forbes Recognition: In 2025, Resideo was recognized on three of Forbes’ 2026 corporate performance lists, reflecting the strength of our brand, the trust of our customers, and the commitment of our employees. Resideo was named one of America’s Most Trusted Companies, one of America’s Best Companies, and one of America’s Best-in-State Companies for Arizona.

Culture: We continue to reinforce our four Core Values:

•Start with the Customer: We understand our customers’ needs and pride ourselves on delivering exceptional experiences;

•Act as One Team: We work together toward common goals, engaging from a place of humility and respect;

•Pioneer the Future: We embrace change, boldly step into the unknown, and relentlessly foster innovation to fuel our growth; and

•Make a Difference: We care about the long-lasting, positive impact we make on each other, our customers, our communities, and the planet.

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Total Rewards: Our primary reward strategy is ensuring “pay-for-performance” on an annual basis, as well as over the long term, which drives a mindset of accountability and productivity. Our compensation guiding principles are to structure compensation that is simple, aligned and balanced. We structure and administer our rewards programs in a manner consistent with good governance practices. We believe that the interests of employees must be aligned with our stockholders. We provide comprehensive and competitive benefits that are designed to meet the varying needs of our employees and promote choice. Our package includes paid time off, flexible work schedules, education assistance programs and more.

These actions reinforce our culture that values employees and seeks to attract and retain the talent that we need to win in the market. We believe the combination of our competitive pay-for-performance compensation programs and our comprehensive benefit programs demonstrate our commitment to a compelling total rewards value proposition for our employees.

Health and Safety: In 2025, we reaffirmed our commitment to maintaining a safe and healthy workplace for all employees, advancing toward our goal of full certification across key international standards. We successfully achieved certification at 10 manufacturing locations for ISO 14001:2015 (Environmental Management Systems) and 8 locations for ISO 45001:2018 (Occupational Health and Safety Management Systems).

Our global Total Case Incident Rate (“TCIR”), which tracks the number of occupational injuries and illnesses per 100 employees, was 0.26 for 2025. This reflects our continued focus on proactive safety measures. We monitor our health and safety performance through a balanced scorecard of key performance indicators (“KPIs”), encompassing both reactive incident management and proactive safety measures. In addition to thorough incident investigations and root cause analysis, we leverage data from hazard observations, regular health and safety inspections conducted by line managers and internal audits led by accredited health and safety auditors. These insights enable us to identify and address potential risks before they lead to incidents, reinforcing our ongoing commitment to the well-being of our workforce.

Seasonality

Our Products and Solutions business typically experiences a moderate level of seasonality. Sales activity is generally highest in the fall and early winter months, reflecting increased customer purchases of heating related products with the highest sales at the end of the third quarter and throughout the fourth quarter in the majority of our geographical markets. The effects of climate change, such as extreme weather conditions and events and water scarcity, may exacerbate fluctuations in typical weather patterns, creating financial risks to our business. In addition, the dynamic global and macroeconomic conditions and regulatory changes may further disrupt these seasonal patterns. Our ADI Global Distribution business historically experiences some variability in results of operations and capital requirements from quarter to quarter due to the seasonal nature of our end users’ businesses with a minor increase in revenues due to more active residential construction, school spending, and general construction activities during the second and third quarters.

Research and Development and Intellectual Property

We have major product design centers in the U.S., Europe, Asia, and Latin America and software centers of excellence in Bengaluru, India; Belgrade, Serbia; and Melville, New York. In addition, our laboratories are certified to meet various industry standards, such as Federal Communications Commission and Underwriters Laboratories, enabling us to test and certify products internally. As of December 31, 2025, we employed approximately 1,400 engineers.

Our deep domain expertise, proprietary technology and brands are protected by a combination of patents, trademarks, copyrights, trade secrets, non-disclosure agreements and contractual provisions. We own over 2,900 worldwide active patents and pending patent applications to protect our research and development investments in new products and services. We have and will continue to protect our products and technology by asserting our intellectual property rights against third-party infringers. Refer to Note 15. Commitments and Contingencies of the Notes to Consolidated Financial Statements. We also have a significant trademark license with Honeywell in connection with our use of the Honeywell Home trademark as well as certain intellectual property licensed by Honeywell to us in connection with the Honeywell Spin-Off. For a more detailed description of the various intellectual property rights and relationships that affect our business, refer to Item 1A. Risk Factors.

Other Information

Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and any amendments to those reports are available free of charge on our website (www.Resideo.com) under the heading Investors (see SEC

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Filings) immediately after they are filed with, or furnished to, the Securities and Exchange Commission (“SEC”). All of the reports that we file with or furnish to the SEC are also available on the SEC’s website (www.sec.gov). In addition, in this Form 10-K, we incorporate by reference certain information from parts of our 2026 Proxy Statement, which will also be available free of charge on our website. Information contained on, or connected to, our website does not and will not constitute part of this Form 10-K.

We are a Delaware corporation incorporated on April 24, 2018. Our principal executive offices are located at 16100 N. 71st Street Suite 550, Scottsdale, Arizona 85254. Our telephone number is (480) 573-5340. Our website address is www.Resideo.com.

We disclose public information to investors, the media, and others interested in our Company through a variety of means, including our investor relations website (https://investor.resideo.com), press releases, SEC filings, blogs, public conference calls and presentations, webcasts, and social media in order to achieve broad, non-exclusionary distribution of information to the public. We use these channels to communicate with our stockholders and the public about us, our products, solutions, and other issues. It is possible that the information we post on social media could be deemed to be material information. We encourage investors, the media, and others interested in our Company to review the information we post on our website and the social media channels listed below. The list of social media channels we use may be updated from time to time on our investor relations website.

The Company’s News Page (www.Resideo.com/news)

The Company’s Facebook Page (www.facebook.com/Resideo)

The Company’s X Feed (www.X.com/Resideo)

The Company’s LinkedIn Feed (www.linkedin.com/company/Resideo1/)

References to our website and other social media channels are made as inactive textual references and information contained on them is not incorporated by reference into this Form 10-K.