grepcent / static financial knowledge base

PALVELLA THERAPEUTICS, INC. (PVLA)

CIK: 0001583648. SIC: 2834 Pharmaceutical Preparations. Latest 10-K as of: 2026-03-31.

SIC breadcrumb: Manufacturing > Chemicals And Allied Products > SIC 2834 Pharmaceutical Preparations

SEC company page: https://www.sec.gov/edgar/browse/?CIK=1583648. Latest filing source: 0001193125-26-133372.

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

Business

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

Risk Factors

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

Selected Fundamentals

MetricValueUnitFYFiled
Net income-41,715,000USD20252026-03-31
Assets59,559,000USD20252026-03-31

Financials

Annual standardized facts from SEC companyfacts as of latest extracted filing date 2026-03-31. Source: https://data.sec.gov/api/xbrl/companyfacts/CIK0001583648.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.

Metric20142016201720182019202020212022202320242025
Net income-22,799,000-17,647,000-26,754,000-25,469,000-37,230,000-45,738,000-33,277,00018,691,000-17,434,000-41,715,000
Operating income-22,759,000-14,594,000-30,831,000-27,157,000-33,921,000-51,831,000-43,474,000-11,869,000-14,095,000-38,602,000
Diluted EPS-0.68-0.712.17-7.83-3.71
Operating cash flow-15,06249,754,000-1,066,000-52,467,000-45,896,000-7,660,000-59,932,000-13,703,000-10,840,000-25,006,000
Assets35,063,000103,876,000141,341,000141,097,000105,010,000153,560,00095,490,0007,548,00088,234,00059,559,000
Liabilities9,836,00092,354,000101,406,00089,745,00073,983,000102,805,00067,561,00011,428,00025,627,00031,576,000
Stockholders' equity25,227,00011,522,00039,935,00051,352,00031,027,00050,755,000-93,777,000-74,483,00062,607,00027,983,000
Cash and cash equivalents29,356,00037,878,00074,867,00062,260,00070,436,000117,764,00038,635,0007,350,00083,602,00057,982,000

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.

Metric20142016201720182019202020212022202320242025
Return on equity-90.38%-153.16%-66.99%-49.60%-119.99%-90.12%-27.85%-149.07%
Return on assets-65.02%-16.99%-18.93%-18.05%-35.45%-29.79%-34.85%-19.76%-70.04%
Liabilities / equity0.398.022.541.752.382.030.411.13
Current ratio3.901.962.824.263.422.522.013.207.335.20

Industry Peer Context

Each number-line places PVLA against the min, median, and max of latest reported values among companies in the same SIC industry when at least three peers report that ratio.

ROE peer context

PVLA ROE versus SIC peer range. Source: grepcent computed from latest SEC companyfacts ratios for SIC industry 2834; peer count 170.PVLA ROE versus SIC peer range. Source: grepcent computed from latest SEC companyfacts ratios for SIC industry 2834; peer count 170.170 SIC peersMin -441.6%Median -31.4%Max 128.7%PVLA -149.1%

ROA peer context

PVLA ROA versus SIC peer range. Source: grepcent computed from latest SEC companyfacts ratios for SIC industry 2834; peer count 186.PVLA ROA versus SIC peer range. Source: grepcent computed from latest SEC companyfacts ratios for SIC industry 2834; peer count 186.186 SIC peersMin -163.7%Median -21.9%Max 71.5%PVLA -70.0%

Financial Charts

PVLA net income, last 5 periods. Source: SEC companyfacts FY2025.PVLA net income, last 5 periods. Source: SEC companyfacts FY2025.PVLA Net incomeLatest point: FY2025 = -$41.7MSource: SEC companyfacts FY2025.Fiscal yearNet income-$250.0M$0.0B$250.0MFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0001193125-26-133372; filed 2026-03-31. Concept: NetIncomeLoss. Source concepts: us-gaap:NetIncomeLoss.

PVLA operating income, last 5 periods. Source: SEC companyfacts FY2025.PVLA operating income, last 5 periods. Source: SEC companyfacts FY2025.PVLA Operating incomeLatest point: FY2025 = -$38.6MSource: SEC companyfacts FY2025.Fiscal yearOperating income-$250.0M-$125.0M$0.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0001193125-26-133372; filed 2026-03-31. Concept: OperatingIncomeLoss. Source concepts: us-gaap:OperatingIncomeLoss.

PVLA diluted eps, last 5 periods. Source: SEC companyfacts FY2025.PVLA diluted eps, last 5 periods. Source: SEC companyfacts FY2025.PVLA Diluted EPSLatest point: FY2025 = -$3.71/shareSource: SEC companyfacts FY2025.Fiscal yearDiluted EPS (USD/share)-$8.00/share$0.00/share$4.00/shareFY2020FY2021FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0001193125-26-133372; filed 2026-03-31. Concept: EarningsPerShareDiluted. Source concepts: us-gaap:EarningsPerShareDiluted.

PVLA operating cash flow, last 5 periods. Source: SEC companyfacts FY2025.PVLA operating cash flow, last 5 periods. Source: SEC companyfacts FY2025.PVLA Operating cash flowLatest point: FY2025 = -$25.0MSource: SEC companyfacts FY2025.Fiscal yearOperating cash flow-$250.0M-$125.0M$0.0BFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0001193125-26-133372; filed 2026-03-31. Concept: NetCashProvidedByUsedInOperatingActivities. Source concepts: us-gaap:NetCashProvidedByUsedInOperatingActivities.

PVLA assets, last 5 periods. Source: SEC companyfacts FY2025.PVLA assets, last 5 periods. Source: SEC companyfacts FY2025.PVLA AssetsLatest point: FY2025 = $59.6MSource: SEC companyfacts FY2025.Fiscal yearAssets$0.0B$125.0M$250.0MFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0001193125-26-133372; filed 2026-03-31. Concept: Assets. Source concepts: us-gaap:Assets.

PVLA liabilities, last 5 periods. Source: SEC companyfacts FY2025.PVLA liabilities, last 5 periods. Source: SEC companyfacts FY2025.PVLA LiabilitiesLatest point: FY2025 = $31.6MSource: SEC companyfacts FY2025.Fiscal yearLiabilities$0.0B$125.0M$250.0MFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0001193125-26-133372; filed 2026-03-31. Concept: Liabilities. Source concepts: us-gaap:Liabilities.

PVLA stockholders' equity, last 5 periods. Source: SEC companyfacts FY2025.PVLA stockholders' equity, last 5 periods. Source: SEC companyfacts FY2025.PVLA Stockholders' equityLatest point: FY2025 = $28.0MSource: SEC companyfacts FY2025.Fiscal yearStockholders' equity-$250.0M$0.0B$250.0MFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0001193125-26-133372; filed 2026-03-31. Concept: StockholdersEquity. Source concepts: us-gaap:StockholdersEquity.

PVLA cash and cash equivalents, last 5 periods. Source: SEC companyfacts FY2025.PVLA cash and cash equivalents, last 5 periods. Source: SEC companyfacts FY2025.PVLA Cash and cash equivalentsLatest point: FY2025 = $58.0MSource: SEC companyfacts FY2025.Fiscal yearCash and cash equivalents$0.0B$125.0M$250.0MFY2021FY2022FY2023FY2024FY2025

Figure provenance: SEC companyfacts. Latest point: FY 2025 ended 2025-12-31; accession 0001193125-26-133372; filed 2026-03-31. Concept: CashAndCashEquivalentsAtCarryingValue. Source concepts: us-gaap:CashAndCashEquivalentsAtCarryingValue.

Quarterly

Quarterly standardized facts from SEC companyfacts as of latest extracted filing date 2026-05-07. Source: https://data.sec.gov/api/xbrl/companyfacts/CIK0001583648.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
2021-Q22021-06-30-0.25reported discrete quarter
2021-Q32021-09-30-0.24reported discrete quarter
2021-Q42021-12-318,443,000derived Q4 = FY annual - nine-month YTD
2022-Q12022-03-3110,988,000-0.07reported discrete quarter
2022-Q22022-06-303,698,000-0.14reported discrete quarter
2022-Q32022-09-305,370,000reported discrete quarter
2022-Q42022-12-315,846,000derived Q4 = FY annual - nine-month YTD
2023-Q12023-03-311,936,000reported discrete quarter
2023-Q22023-06-3020,055,0003,976,0000.05reported discrete quarter
2023-Q32023-09-3019,520,000-10,752,000reported discrete quarter
2023-Q42023-12-311,299,000-4,584,000derived Q4 = FY annual - nine-month YTD
2024-Q12024-03-3153,000-4,892,000reported discrete quarter
2024-Q22024-06-300.00-3,590,000-2.76reported discrete quarter
2024-Q32024-09-300.00-2,887,000-2.19reported discrete quarter
2024-Q42024-12-31-6,065,000derived Q4 = FY annual - nine-month YTD
2025-Q12025-03-31-8,185,000-0.74reported discrete quarter
2025-Q22025-03-31-8,185,000reported discrete quarter
2025-Q22025-06-30-0.86reported discrete quarter
2025-Q32025-06-30-9,471,000reported discrete quarter
2025-Q32025-09-30-1.03reported discrete quarter
2025-Q42025-12-31-12,714,000derived Q4 = FY annual - nine-month YTD
2026-Q12026-03-31-15,767,000-1.20reported discrete quarter

Quarterly Charts

PVLA quarterly revenue, last 12 periods. Source: SEC companyfacts 2024-Q3.PVLA quarterly revenue, last 12 periods. Source: SEC companyfacts 2024-Q3.PVLA Quarterly RevenueLatest point: 2024-Q3 = $0.0BSource: SEC companyfacts 2024-Q3.Fiscal quarterQuarterly Revenue$0.0B$125.0M$250.0M2021-Q42022-Q12022-Q22022-Q32022-Q42023-Q12023-Q22023-Q32023-Q42024-Q12024-Q22024-Q3

Figure provenance: SEC companyfacts. Latest point: FY 2024 ended 2024-09-30; accession 0001437749-24-034891; filed 2024-11-13. Concept: Revenues. Source concepts: us-gaap:Revenues.

PVLA quarterly net income, last 12 periods. Source: SEC companyfacts 2026-Q1.PVLA quarterly net income, last 12 periods. Source: SEC companyfacts 2026-Q1.PVLA Quarterly Net incomeLatest point: 2026-Q1 = -$15.8MSource: SEC companyfacts 2026-Q1.Fiscal quarterQuarterly Net income-$250.0M$0.0B$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 0001193125-26-210463; filed 2026-05-07. Concept: NetIncomeLoss. Source concepts: us-gaap:NetIncomeLoss.

PVLA quarterly diluted eps, last 11 periods. Source: SEC companyfacts 2026-Q1.PVLA quarterly diluted eps, last 11 periods. Source: SEC companyfacts 2026-Q1.PVLA Quarterly Diluted EPSLatest point: 2026-Q1 = -$1.20/shareSource: SEC companyfacts 2026-Q1.Fiscal quarterQuarterly Diluted EPS (USD/share)-$4.00/share$0.00/share$1.00/share2021-Q22021-Q32022-Q12022-Q22023-Q22024-Q22024-Q32025-Q12025-Q22025-Q32026-Q1

Figure provenance: SEC companyfacts. Latest point: FY 2026 ended 2026-03-31; accession 0001193125-26-210463; filed 2026-05-07. Concept: EarningsPerShareDiluted. Source concepts: us-gaap:EarningsPerShareDiluted.

Macro Cross-References

Latest quarter (10-Q)

Latest 10-Q source: 0001193125-26-210463.

Extracted structurally from real Item 2 body heading to real Item 3/4 boundary. Published MD&A gate trimmed front/tail over-capture. Confidence: high. Filing date: 2026-05-07. Report date: 2026-03-31.

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

The following discussion and analysis of our financial condition and results of operations should be read together with our unaudited condensed consolidated financial statements and accompanying notes included in Part I, Item 1 of this Quarterly Report on Form 10-Q and our consolidated audited financial statements and accompanying notes thereto included in our 2025 Form 10-K filed with the Securities and Exchange Commission on March 31, 2026, as well as the information contained under the heading "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our 2025 Form 10-K.

In addition to historical information, this discussion and analysis includes forward-looking statements that are subject to risks and uncertainties, including those discussed in the section titled “Risk Factors,” set forth in Part I, Item 1A of our 2025 Form 10-K, that could cause actual results to differ materially from historical or anticipated results.

Unless otherwise indicated or the context otherwise requires, references in this “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section to “the Company,” “we,” “us,” and “our” refer to the business and operations of Palvella Therapeutics, Inc., a Delaware corporation (referred to as “Legacy Palvella”) prior to the Merger, and the business and operations of Palvella Therapeutics, Inc., a Nevada Corporation (previously Pieris Pharmaceuticals, Inc., referred to as “Pieris”) and its consolidated subsidiaries following the Merger.

Overview

We are a clinical-stage biopharmaceutical company whose vision is to become the leading rare disease biopharmaceutical company focused on developing and, if approved, commercializing novel therapies to treat patients suffering from serious, rare skin diseases and vascular malformations for which there are no FDA-approved therapies. We envision a future treatment paradigm in which individuals suffering from serious, rare skin diseases and vascular malformations, and the physicians treating those diseases, have significantly improved treatment options which address the underlying causes of those diseases. We intend to leverage our versatile QTORIN platform to minimize the challenges and timelines typically associated with generating novel topical product candidates that penetrate the deep layers of the skin to locally treat a broad spectrum of rare skin diseases and vascular malformations. Our lead product candidate, QTORIN 3.9% rapamycin anhydrous gel (“QTORIN rapamycin”), is currently in clinical development for microcystic lymphatic malformations (“microcystic LMs”) and cutaneous venous malformations (“cutaneous VMs”). We are also expanding our QTORIN rapamycin development program into clinically significant angiokeratomas. QTORIN rapamycin contains the active pharmaceutical ingredient (“API”) rapamycin, also known as sirolimus, which is an inhibitor of mTOR, a kinase that has been known to play a key role in cell growth and proliferation. We introduced a new QTORIN product candidate, QTORIN pitavastatin, for the treatment of disseminated superficial actinic porokeratosis (“DSAP”), which leverages our proprietary QTORIN platform and is designed to be the first pathogenesis-directed therapy for DSAP.

We announced positive topline results for two clinical trials: (i) SELVA, a Phase 3, single-arm, baseline-controlled study evaluating the safety and efficacy of QTORIN rapamycin for the treatment of microcystic LMs in patients 3 years and older and (ii) TOIVA, a Phase 2, single-arm, open-label, baseline-controlled study evaluating the safety and efficacy of QTORIN rapamycin for the treatment of cutaneous VMs in patients 6 years and older. We also have preclinical research programs based on our QTORIN platform for the treatment of serious, rare skin diseases for which we believe there are significant unmet needs. As we work to expand our pipeline into additional rare skin diseases, we plan to generate new product candidates based on our QTORIN platform.

Recent Developments


In January 2026, we completed a Preliminary Breakthrough Therapy Designation Advice meeting with the FDA for our cutaneous venous malformation program. Based on that meeting, we submitted an application to the FDA for Breakthrough Therapy Designation in the second quarter of 2026.


In February 2026, we announced positive topline results from SELVA, a Phase 3, single-arm, baseline-controlled study, which evaluated the safety and efficacy of QTORIN rapamycin for the treatment of microcystic LMs in patients 3 years and older. In March 2026, we submitted a pre-NDA meeting request to

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the FDA, which was subsequently granted. We anticipate the meeting to occur during the second quarter of 2026.


In February 2026, we received written feedback from the FDA on the proposed design of a Phase 2 study of approximately 10-20 patients to evaluate QTORIN rapamycin for the treatment of clinically significant angiokeratomas. In April 2026, we dosed our first patients in the Phase 2 LOTU trial, a baseline-controlled clinical study of QTORIN rapamycin administered topically once daily for the treatment of clinically significant angiokeratomas. Topline results are expected in the second half of 2027.


In March 2026, we announced the launch of "BEYOND mLM," a new disease state awareness campaign and website, BEYONDmLM.com, designed to educate, engage, and empower patients, caregivers, and healthcare professionals about microcystic LMs.


In 2026, we announced three senior leadership team appointments, Vimal Patel, PharmD as Senior Vice President of Medical Affairs, Jennifer J. McDonough as Senior Vice President of Market Access and Patient Services, and Kent Taylor as Senior Vice President of Sales.


In April 2026, we announced the appointment of John D. Doux, M.D., M.B.A. to the Board of Directors.

Our Novel Product Candidate: QTORIN rapamycin

Overview

We are developing QTORIN rapamycin, a novel, 3.9% anhydrous topical gel formulation containing rapamycin, for the treatment of microcystic LMs, cutaneous VMs, clinically significant angiokeratomas and other mTOR-driven skin diseases. If approved, we believe QTORIN rapamycin has the potential to become the first line therapy and the standard of care in each of these diseases.

QTORIN rapamycin for the treatment of microcystic LMs

Microcystic LM is a serious, chronically debilitating, and lifelong genetic disease of the lymphatic system characterized by lymphorrhea and acute cellulitis. It is estimated that there are more than 30,000 diagnosed patients in the United States with microcystic LMs. The specific pathophysiology of microcystic LMs is primarily the result of somatic activating mutations in PIK3CA that result in increased activation of the PI3K/mTOR pathway and subsequent lymphatic hyperplasia. Because microcystic LMs have a well-understood pathophysiology and a well-defined disease course, we believe an appropriate clinical study for this rare disease is a baseline-controlled Phase 3 study using clinician assessments.

We recently completed SELVA, a Phase 3, single-arm, baseline-controlled clinical trial evaluating once-daily QTORIN rapamycin in individuals aged ≥ 3 years with microcystic LMs and announced positive topline results. Of the 51 participants enrolled, 50 initiated treatment, including 49 participants aged ≥ 6 years and 1 participant in the exploratory 3- to 5-year-old cohort. In accordance with the statistical analysis plan, efficacy results were reported for participants aged ≥ 6 years, which constituted the Intent-to-Treat (“ITT”) population. The study was originally designed to enroll 40 participants across leading U.S. vascular anomaly centers and exceeded its target enrollment.

The primary endpoint, the mLM-IGA, is a 7-point clinician-assessed dynamic scale measuring change in disease severity from baseline ranging from “Very Much Worse” (-3) to “Very Much Improved” (+3). On the mLM-IGA in the ITT population (n=49), QTORIN rapamycin demonstrated a mean improvement of +2.13 points, meeting the study’s primary endpoint (p0.001). Of the participants aged ≥ 6 who completed the efficacy evaluation period, 95% (41/43) demonstrated at least a 1-point improvement, and 86% (37/43) were either “Much Improved” (+2) or “Very Much Improved” (+3). In the 3- to 5-year-old cohort, one participant enrolled and was “Very Much Improved” (+3) on the mLM-IGA at Week 24.

Similar to previous clinical trials of QTORIN rapamycin, in the Phase 3 SELVA study, QTORIN rapamycin was well-tolerated. Amongst the 50 participants who initiated treatment, 35 participants (70%) experienced treatment-emergent adverse events (“TEAEs”). Four experienced serious adverse events, of which one experienced a severe TEAE; all were deemed unrelated to study drug by investigators. Amongst the TEAEs, a total of 17 participants experienced

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treatment-related adverse events (“TRAEs”), all of which were rated mild or moderate. The most common TRAEs included application site acne, application site discoloration, and application site pruritus (all n=3, 6%). Rapamycin levels were below 2 ng/mL in systemic circulation for all participants at all timepoints in the study.

We previously announced topline Phase 2 clinical trial results from our multi-center, open-label, baseline-controlled study of 12 subjects receiving QTORIN rapamycin administered once daily for 12 weeks for the treatment of microcystic LMs. The Phase 2 clinical trial featured multiple pre-specified efficacy assessments, including clinician and patient global impression assessments as well as assessments of individual clinical manifestations that are important disease burdens for individuals living with microcystic LMs. All participants in the Phase 2 clinical trial demonstrated improvements on the Clinician Global Impression of Change scale, a 7-point clinician-rated change scale, with all participants in the study rated as either “Much Improved” (n=7, 58%) or "Very Much Improved" (n=5, 42%) after 12-weeks of treatment compared to the pre-treatment baseline period.

In March 2026, we submitted a pre-NDA meeting request to the FDA, which was subsequently granted. We anticipate the meeting to occur during the second quarter of 2026. We have received Breakthrough Therapy Designation, Fast Track Designation, and Orphan Drug Designation from the FDA for QTORIN rapamycin for the treatment of microcystic LMs. Orphan Drug Designation has also been granted by the European Medicines Agency. In addition, we have been awarded an FDA Products Clinical Trials Grant for up to $2.6 million supporting the SELVA Phase 3 study and have received $1.1 million to date.

QTORIN rapamycin for the treatment of cutaneous VMs

Cutaneous venous malformation is a serious disease with a high unmet need characterized by dysregulated growth of malformed veins impacting the skin, causing functional impairment and deformity. It is estimated that there are more than 75,000 diagnosed patients in the United States with cutaneous VMs.

In December 2025, we announced positive topline efficacy results from TOIVA, a multicenter, single-arm, open-label, baseline-controlled, Phase 2 clinical trial designed to evaluate the safety and efficacy of QTORIN rapamycin for the treatment of cutaneous VMs. The study enrolled 16 participants, ages six and older, at leading vascular anomaly centers across the U.S. Key findings from among the study’s pre-specified efficacy endpoints at Week 12 demonstrated nominally statistically significant (p0.001) improvements at Week 12 on several of the clinically relevant and important efficacy endpoints evaluated when compared to pre-treatment (baseline), including many of the static and impression of change global instruments evaluated, including the Overall Cutaneous

[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: 2026-03-31. Report date: 2025-12-31.

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

The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated audited financial statements and accompanying notes appearing elsewhere in this Form 10-K. In addition to historical information, this discussion and analysis includes forward-looking statements that are subject to risks and uncertainties, including those discussed in the section titled “Risk Factors,” set forth in Part I, Item 1A of this Form 10-K, that could cause actual results to differ materially from historical results or anticipated results.

Unless otherwise indicated or the context otherwise requires, references in this “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section to “the Company,” “we,” “us,” and “our” refer to the business and operations of Palvella Therapeutics, Inc., a Delaware corporation (referred to as “Legacy Palvella”) prior to the Merger, and the business and operations of Palvella Therapeutics, Inc., a Nevada Corporation (previously Pieris Pharmaceuticals, Inc., referred to as “Pieris”) and its consolidated subsidiaries following the Merger.

Overview

We are a clinical-stage biopharmaceutical company whose vision is to become the leading rare disease biopharmaceutical company focused on developing and, if approved, commercializing novel therapies to treat patients suffering from serious, rare skin diseases and vascular malformations for which there are no FDA-approved therapies. We envision a future treatment paradigm in which individuals suffering from serious, rare skin diseases and vascular malformations, and the physicians treating those diseases, have significantly improved treatment options which address the underlying causes of those diseases. We intend to leverage our versatile QTORIN platform to minimize the challenges and timelines typically associated with generating novel topical product candidates. The QTORIN platform is specifically designed to reproducibly generate novel topical product candidates that penetrate the deep layers of the skin to locally treat a broad spectrum of rare skin diseases and vascular malformations. Our lead product candidate, QTORIN 3.9% rapamycin anhydrous gel (“QTORIN rapamycin”), is currently in clinical development for microcystic lymphatic malformations (“microcystic LMs”) and cutaneous venous malformations (“cutaneous VMs”). QTORIN rapamycin contains the active pharmaceutical ingredient (“API”) rapamycin, also known as sirolimus, which is an inhibitor of mTOR, a kinase that has been known to play a key role in cell growth and proliferation.

In February 2026, we announced positive topline results from SELVA, a Phase 3, single-arm, baseline-controlled study, which evaluated the safety and efficacy of QTORIN rapamycin for the treatment of microcystic LMs in patients 3 years and older. The study met the pre-specified primary endpoint, the mLM Investigator Global Assessment (“mLM-IGA”), with a +2.13 (p0.001) improvement. The study also met its pre-specified key secondary and all four additional secondary endpoints with statistical significance (all p0.001). In December 2025, we announced positive topline efficacy results from TOIVA, a Phase 2, single-arm, baseline-controlled study, which evaluated the safety and efficacy of QTORIN rapamycin for the treatment of cutaneous VMs in patients 6 years and older, which achieved nominal statistical significance (p0.001) on multiple pre-specified clinician-reported and patient-reported efficacy endpoints, including dynamic change endpoints and static severity endpoints at Week 12.

In September 2025, we announced the expansion of our QTORIN rapamycin development program into clinically significant angiokeratomas.

In November 2025, we announced a new QTORIN product candidate, QTORIN pitavastatin, for the treatment of disseminated superficial actinic porokeratosis (“DSAP”). QTORIN pitavastatin leverages our proprietary QTORIN platform and is designed to be the first pathogenesis-directed therapy for DSAP by directly inhibiting the causal mevalonate pathway.

Our Novel Product Candidate: QTORIN rapamycin

Overview

We are developing QTORIN rapamycin, a novel, 3.9% anhydrous topical gel formulation containing rapamycin, for the treatment of microcystic LMs, cutaneous VMs, clinically significant angiokeratomas and other mTOR-driven skin diseases. If approved, we believe QTORIN rapamycin has the potential to become the standard of care in each of these diseases.

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QTORIN rapamycin for the treatment of microcystic LMs

Microcystic LM is a serious, chronically debilitating, and lifelong genetic disease of the lymphatic system characterized by lymphorrhea and acute cellulitis. It is estimated that there are more than 30,000 diagnosed patients in the United States with microcystic LMs. The specific pathophysiology of microcystic LMs is primarily the result of somatic activating mutations in PIK3CA that result in increased activation of the PI3K/mTOR pathway and subsequent lymphatic hyperplasia. Because microcystic LMs have a well-understood pathophysiology and a well-defined disease course, we believe an appropriate clinical study for this rare disease is a baseline-controlled Phase 3 study using clinician assessments.

We recently completed SELVA, a Phase 3, single-arm, baseline-controlled clinical trial evaluating once-daily QTORIN rapamycin in individuals aged ≥ 3 years with microcystic LMs and announced positive topline results. Of the 51 participants enrolled, 50 initiated treatment, including 49 participants aged ≥ 6 years and 1 participant in the exploratory 3- to 5-year-old cohort. In accordance with the statistical analysis plan, efficacy results were reported for participants aged ≥ 6 years, which constituted the Intent-to-Treat (“ITT”) population. The study was originally designed to enroll 40 participants across leading U.S. vascular anomaly centers and exceeded its target enrollment.

The primary endpoint, the mLM-IGA, is a 7-point clinician-assessed dynamic scale measuring change in disease severity from baseline ranging from “Very Much Worse” (-3) to “Very Much Improved” (+3). On the mLM-IGA in the ITT population (n=49), QTORIN rapamycin demonstrated a mean improvement of +2.13 points, meeting the study’s primary endpoint (p0.001). Of the participants aged ≥ 6 who completed the efficacy evaluation period, 95% (41/43) demonstrated at least a 1-point improvement, and 86% (37/43) were either “Much Improved” (+2) or “Very Much Improved” (+3). In the 3- to 5-year-old cohort, one participant enrolled and was “Very Much Improved” (+3) on the mLM-IGA at Week 24.

Similar to previous clinical trials of QTORIN rapamycin, in the Phase 3 SELVA study, QTORIN rapamycin was well-tolerated. Amongst the 50 participants who initiated treatment, 35 participants (70%) experienced treatment-emergent adverse events (“TEAEs”). Four experienced serious adverse events, of which one experienced a severe TEAE; all were deemed unrelated to study drug by investigators. Amongst the TEAEs, a total of 17 participants experienced treatment-related adverse events (“TRAEs”), all of which were rated mild or moderate. The most common TRAEs included application site acne, application site discoloration, and application site pruritus (all n=3, 6%). Rapamycin levels were below 2 ng/mL in systemic circulation for all participants at all timepoints in the study.

We previously announced topline Phase 2 clinical trial results from our multi-center, open-label, baseline-controlled study of 12 subjects receiving QTORIN rapamycin administered once daily for 12 weeks for the treatment of microcystic LMs. The Phase 2 clinical trial featured multiple pre-specified efficacy assessments, including clinician and patient global impression assessments as well as assessments of individual clinical manifestations that are important disease burdens for individuals living with microcystic LMs. All participants in the Phase 2 clinical trial demonstrated improvements on the Clinician Global Impression of Change scale, a 7-point clinician-rated change scale, with all participants in the study rated as either “Much Improved” (n=7, 58%) or "Very Much Improved" (n=5, 42%) after 12-weeks of treatment compared to the pre-treatment baseline period.

In the first quarter of 2026, we submitted a pre-NDA meeting request to the FDA. We anticipate the meeting to occur during the second quarter of 2026. We have received Breakthrough Therapy Designation, Fast Track Designation, and Orphan Drug Designation from the FDA for QTORIN rapamycin for the treatment of microcystic LMs. Orphan Drug Designation has also been granted by the European Medicines Agency. In addition, we have been awarded an FDA Products Clinical Trials Grant for up to $2.6 million supporting the SELVA Phase 3 study. In May 2025, we received initial proceeds of $0.5 million from the FDA under such grant and received additional proceeds of $0.6 million in October 2025.

QTORIN rapamycin for the treatment of cutaneous VMs

Cutaneous venous malformation is a serious disease with a high unmet need characterized by dysregulated growth of malformed veins impacting the skin, causing functional impairment and deformity. It is estimated that there are more than 75,000 diagnosed patients in the United States with cutaneous VMs.

In December 2025, we announced positive topline efficacy results from TOIVA, a multicenter, single-arm,

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open-label, baseline-controlled, Phase 2 clinical trial designed to evaluate the safety and efficacy of QTORIN rapamycin for the treatment of cutaneous VMs. The study enrolled 16 participants, ages six and older, at leading vascular anomaly centers across the U.S. Key findings from among the study’s pre-specified efficacy endpoints at Week 12 demonstrated nominally statistically significant (p0.001) improvements at Week 12 on several of the clinically relevant and important efficacy endpoints evaluated when compared to pre-treatment (baseline), including many of the static and impression of change global instruments evaluated, including the Overall Cutaneous VM Investigator Global Assessment (“Overall cVM-IGA”) (Table 5). The Overall cVM-IGA is a 7-point, clinician-assessed, single-item efficacy endpoint measuring change in severity from baseline, with the numeric rating scale ranging from “Very Much Worse” (-3) to “Very Much Improved” (+3). On the Overall cVM-IGA at Week 12, 73% (11/15) participants improved, with 67% (10/15) either “Much Improved” (+2) or “Very Much Improved” (+3). No trial participants (0/15) were “Minimally Worse” (-1), “Much Worse” (-2), or “Very Much Worse” (-3).

Similar to previous clinical trials of QTORIN rapamycin, in the Phase 2 TOIVA study QTORIN rapamycin was generally well-tolerated, with the most common treatment-emergent adverse events being application site reactions (erythema, 25%). All treatment-related adverse events were moderate or mild, with no unexpected adverse events reported. Rapamycin levels were below 2 ng/mL in systemic circulation for all participants at all timepoints in the study.

In January 2026, we completed a Preliminary Breakthrough Therapy Designation Advice meeting with the FDA. Based on that meeting, our intent is to submit an application to the FDA for Breakthrough Therapy Designation in the second quarter of 2026. We plan to commence a Phase 3 pivotal study in the second half of 2026.

We have received Fast Track Designation from the FDA for our cutaneous VMs program.

QTORIN rapamycin for the treatment of Clinically Significant Angiokeratomas

In September 2025, we announced the expansion of our QTORIN rapamycin development program into clinically significant angiokeratomas. No FDA-approved therapies currently exist for the estimated more than 50,000 diagnosed patients in the U.S.

Clinically significant angiokeratomas are superficial vascular malformations of lymphatic origin which can cause bleeding, pain, functional impairment, and risk of infection, with no tendency for spontaneous regression. Angiokeratomas were recently classified as an isolated lymphatic malformation in 2025 by the International Society for the Study of Vascular Anomalies (“ISSVA”). Current treatment options include potentially destructive procedural interventions that carry significant risks of pain, scarring, and recurrence. Despite the substantial disease burden, there are currently no FDA-approved treatments available for clinically significant angiokeratomas.

We received written feedback from the FDA in the first quarter of 2026 on the proposed design of a Phase 2 study of approximately 10-20 patients to evaluate QTORIN rapamycin for the treatment of clinically significant angiokeratomas. Study initiation is anticipated in the second quarter of 2026.

Fast Track Designation from the FDA has been granted for our angiokeratomas program.

QTORIN pitavastatin for the treatment of Disseminated Superficial Actinic Porokeratosis

In November 2025, we announced a new product candidate, QTORIN pitavastatin, for the treatment of disseminated superficial actinic porokeratosis (DSAP). QTORIN pitavastatin was developed leveraging our QTORIN platform.

DSAP is a premalignant genetic skin disease that presents as persistent, often extensive lesions that enlarge and increase in size, number, and extent over time, causing chronic loss of skin integrity which can severely impact quality-of-life; no FDA-approved therapies currently exist for the estimated more than 50,000 diagnosed patients in the U.S.

We received written feedback from the FDA in the first quarter of 2026 on the proposed design of a Phase 2 study to evaluate QTORIN pitavastatin for the treatment of DSAP. Trial initiation is anticipated in the second half of 2026.

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The Business Combination

On December 13, 2024 (the “Closing Date”), we consummated the previously announced business combination contemplated by that certain Agreement and Plan of Merger, dated July 23, 2024 (the “Merger Agreement”), by and among the Company, Polo Merger Sub, Inc. (“Merger Sub”), and Palvella Therapeutics, Inc. (“Legacy Palvella”). Pursuant to the Merger Agreement, on the Closing Date, (i) Merger Sub merged with and into Legacy Palvella, with Legacy Palvella as the surviving company in the merger and, after giving effect to such merger, continuing as a wholly owned subsidiary of the Company (the “Merger” and, together with the other transactions contemplated by the Merger Agreement, the “Business Combination”) and (ii) the Company’s name was changed from Pieris Pharmaceuticals, Inc. to Palvella Therapeutics, Inc.

The Business Combination was accounted for as a reverse recapitalization in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). Under this method of accounting, Pieris was treated as the “acquired” company and Legacy Palvella is treated as the acquirer for financial reporting purposes as more fully explained in Note 1 and Note 3 of the accompanying notes to the consolidated financial statements contained elsewhere in this Annual Report on Form 10-K.

PIPE Financing

Concurrently with the execution of the Merger Agreement on July 23, 2024, Pieris entered into a securities purchase agreement (the “Purchase Agreement”) with certain investors, including BVF Partners, L.P., an existing stockholder of Pieris (the “PIPE Investors”), pursuant to which, among other things, on the Closing Date and immediately following the consummation of the Merger, the PIPE Investors purchased (either for cash or in exchange for the termination and cancellation of outstanding convertible promissory notes issued by Legacy Palvella), and the Company issued and sold to the PIPE Investors, (i) 3,168,048 shares of common stock and (ii) Pre-Funded Warrants, exercisable for 2,466,456 shares of common stock, at a purchase price of $13.9965 per share or $13.9955 per Pre-Funded Warrant, which represents the per share purchase price of the common stock less the $0.001 per share exercise price for each Pre-Funded Warrant, for an aggregate purchase price of approximately $78.9 million, consisting of approximately $60.0 million in cash and the conversion of approximately $18.9 million of principal and interest under outstanding convertible notes issued by Legacy Palvella (the “PIPE Financing”).

Contingent Value Rights Agreement

On December 13, 2024, immediately prior to closing of the Merger, we entered into a Contingent Value Rights Agreement (the “CVR Agreement”) with a rights agent, pursuant to which our pre-Merger capital stockholders received one contingent value right (each, a “CVR”) for each outstanding share of our Common Stock held by such stockholder, or share of Common Stock underlying preferred stock held by such stockholder, on such date. Each CVR represents the contractual right to receive payments upon the receipt of payments by us or any of its affiliates under certain strategic partner agreements, including existing collaboration agreements pursuant to which we may be entitled to milestones and royalties in the future and other out-licensing agreements for certain of Pieris’ legacy assets, and upon the receipt of certain research and development tax credits in favor of us or any of its affiliates, in each case as set forth in, and subject to and in accordance with the terms and conditions of, the CVR Agreement. In January 2026, the Company paid out approximately $2.0 million to holders of CVRs related to receipt of certain research and development tax credits.

Convertible Note Financing

Between June and July 2024, Legacy Palvella issued convertible notes in the aggregate principal amount of approximately $18.4 million (the “Convertible Notes”). Simple interest accrued on the outstanding principal amount of the Convertible Notes at an annual rate of SOFR plus 2.0% per annum. Unless earlier converted, the maturity date was the earliest to occur of (i) the date that Legacy Palvella received approval of an NDA by the FDA of the QTORIN rapamycin in the United States, or (ii) the date that is June 3, 2027. Upon the closing of the PIPE Financing, the entire outstanding principal amount and unpaid accrued interest on the convertible notes automatically converted into an aggregate of 1,179,163 shares of common stock and 168,503 prefunded warrants. See Note 7 of the accompanying notes to the consolidated financial statements contained elsewhere in this Annual Report on Form 10-K.

Ligand Development Funding and Royalties Agreement

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We are party to a Development Funding and Royalties Agreement with Ligand Pharmaceuticals, Inc. (“Ligand”), dated December 13, 2018, as amended May 22, 2020 and November 28, 2023 (the “Ligand Agreement”). Under the Ligand Agreement, Ligand has made payments totaling $15.0 million to fund the development of QTORIN rapamycin. As partial consideration for the funding received, we granted Ligand the right to receive up to $8.0 million in milestone payments upon achievement of certain corporate, financing and regulatory milestones by us related to QTORIN rapamycin for the treatment of any and all indications, of which $5.0 million of potential future milestone payments remain under the arrangement. In addition, we agreed to pay to Ligand tiered royalties ranging from 8.0% to 9.8% of any aggregate annual worldwide net product sales of any products based on QTORIN rapamycin. See Note 5 of the accompanying notes to the consolidated financial statements contained elsewhere in this Annual Report on Form 10-K.

Impact of Global Economic Events

Uncertainty in the global economy presents significant risks to our business. We are subject to continuing risks and uncertainties in connection with the current macroeconomic environment, including increases in inflation and geopolitical factors, including increases in inflation, increased U.S. trade tariffs and retaliatory tariffs, interest rate and currency rate fluctuations, new laws and regulations enacted by the Trump administration, including, but not limited to, the One Big Beautiful Bill Act, economic slowdown or recession, banking instability, monetary policy changes, and geopolitical factors, including the ongoing conflict between Russia and Ukraine, the current conflicts in Venezuela and the Middle East (including any escalation or expansion) and increasing tensions between China and Taiwan, rapid changes in our regulatory landscape in the United States, including significant staffing reductions and unexpected shifts in leadership of certain federal agencies, and an uncertain legislative environment and supply chain disruptions. While our management is closely monitoring the impact of the current macroeconomic conditions on all aspects of our business, including the impacts on its participants in its clinical trials, employees, suppliers, vendors and business partners, the ultimate extent of the impact on our business remains highly uncertain and will depend on future developments and factors that continue to evolve. Most of these developments and factors are outside our control and could exist for an extended period of time. Management will continue to evaluate the nature and extent of the potential impacts to our business, results of operations, liquidity and capital resources. For additional information, see Part I, Item 1A “Risk Factors.”

Components of Operating Results

Operating Expenses

Our operating expenses since inception have consisted primarily of research and development expenses and general and administrative costs.

We expect to continue to incur significant operating losses for the foreseeable future and to incur increased expenses as we continue to advance our product candidates through clinical trials and regulatory submissions. We may also incur expenses in connection with the in-licensing or acquisition of additional product candidates. Furthermore, we expect to incur additional costs associated with operating as a public company, including significant legal, accounting, investor relations and other expenses that Legacy Palvella did not incur as a private company. If we receive regulatory approval for QTORIN rapamycin for treatment of microcystic LM, cutaneous VM, clinically significant angiokeratomas, QTORIN pitavastatin for the treatment of disseminated superficial actinic porokeratosis or any future product candidates, we expect to incur significant commercialization expenses related to product manufacturing, marketing, sales and distribution. Our losses may fluctuate significantly from quarter-to-quarter and year-to-year, depending on the timing of our clinical trials and our expenditures on other research and development activities.

Research and Development Expenses

Our research and development expenses consist primarily of costs incurred for the development of our product candidates, which include:


costs related to production of preclinical and clinical materials, including CMC fees paid to CMOs;


personnel costs, including salaries, related benefits and stock-based compensation expense for employees engaged in research and development functions;

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vendor expenses related to the execution of preclinical studies and clinical trials;


expenses incurred under agreements with consultants that conduct research and development activities on our behalf;


costs related to compliance with regulatory requirements; and


allocated overhead, including rent, equipment and information technology costs.

We expense all research and development expenses in the periods in which they are incurred. Costs for certain research and development activities are recognized based on an evaluation of the progress to completion of specific tasks using information and data provided to us by our vendors and other service providers. This process involves reviewing open contracts, communicating with our personnel to identify services that have been performed on our behalf and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of actual costs. Any nonrefundable advance payments that we make for goods or services to be received in the future for use in research and development activities are recorded as prepaid expenses. Such amounts are expensed as the related goods are delivered or the related services are performed, or until it is no longer expected that the goods will be delivered or the services rendered.

Our indirect research and development expenses are not currently tracked on a program-by-program basis. We use our personnel and infrastructure resources across multiple research and development programs to identify and develop product candidates.

Research and development activities account for a significant portion of our operating expenses. We expect our research and development expenses to increase substantially for the foreseeable future as we continue to invest in research and development activities related to developing our product candidates, including investments in advancing our programs and conducting clinical trials. In particular, we expect to incur substantial research and development expenses to continue late-stage clinical development and pursue regulatory approvals of QTORIN rapamycin for the treatment of microcystic LM venous malformations and the development of our preclinical programs. Product candidates in later stages of clinical development generally incur higher development costs than those in earlier stages, primarily due to the increased size and duration of later-stage clinical trials. As a result, we expect our research and development expenses to increase as our product candidates advance into later stages of clinical development.

Because of the numerous risks and uncertainties associated with product development and the current stage of development of our product candidates and programs, we cannot reasonably estimate or know the nature, timing and estimated costs necessary to complete the remainder of the development of our product candidates or programs. The duration, costs and timing of preclinical studies and clinical trials and development of our product candidates will depend on a variety of factors, including:


timely completion of our preclinical studies and clinical trials, which may be significantly slower or cost more than we currently anticipate and may depend substantially upon the performance of certain third-party contractors;


delays in validating, or inability to validate, any endpoints utilized in a clinical trial;


the prevalence, duration and severity of potential side effects or other safety issues experienced with our product candidates, if any, or experienced by competitors who are developing topical rapamycin products or who are targeting the same indications in the rare skin diseases space;


the ability of CMOs upon which we rely to manufacture clinical supplies of our product candidates or any future product candidates to remain in good standing with relevant regulatory authorities and to develop, validate and maintain commercially viable manufacturing processes that are compliant with cGMP;


our ability to retain patients who have enrolled in a clinical study but may be prone to withdraw due to the rigors of the clinical trial, lack of efficacy, side effects, personal issues or loss of interest;

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our ability to establish and enforce intellectual property rights in and to our current product candidates or any future product candidates; and


minimizing and managing any delay or disruption to our ongoing or planned clinical trials.

A change in the outcome of any of these factors with respect to the development of any of our product candidates would significantly change the costs and timing associated with the development of that product candidate.

We may never succeed in achieving regulatory approval for any of our product candidates. Our preclinical studies and clinical trials may be unsuccessful. We may elect to discontinue, suspend or modify clinical trials of some product candidates or focus on others. A change in the outcome of any of these factors could mean a significant change in the costs and timing associated with the development of our current and future preclinical and clinical product candidates. For example, if the FDA or another regulatory authority were to require us to conduct additional clinical trials beyond those that we currently anticipate will be required for the completion of any of our product candidates’ clinical development, or if we experience significant delays in execution of or enrollment in any of our preclinical studies or clinical trials, we could be required to expend significant additional financial resources and time on the completion of preclinical and clinical development for such product candidates.

General and Administrative Expenses

Our general and administrative expenses consist primarily of the following costs:


personnel costs, including salaries, related benefits, travel and stock-based compensation expense for personnel in executive, finance and administrative functions; and


professional fees for legal, intellectual property, information technology, financial, human resources, consulting, audit and accounting services not otherwise included in research and development expenses.

We anticipate that our general and administrative expenses will increase substantially in the future as we increase our headcount to support our organizational growth. Following the completion of the Merger, we also anticipate that we will incur increased accounting, audit, legal, regulatory, compliance and director and officer insurance costs as well as investor and public relations expenses associated with our operations as a public company. In addition, if we obtain regulatory approval for a product candidate and do not enter into a third-party commercialization collaboration, we expect to incur significant expenses related to building a sales and marketing organization to support product sales, marketing and distribution activities.

Other (Expense) Income

Our other (expense) income for the years ended December 31, 2025 and 2024 primarily consists of: (i) non-cash interest expense related to our obligation to make future royalty payments pursuant to the Amended Ligand Agreement, which was determined to be a debt instrument; (ii) interest expense related to the Convertible Notes; (iii) fair value adjustments related to our obligation to make future milestone payments under the Amended Ligand Agreement, which was determined to be a derivative liability; (iv) fair value adjustments related to the Convertible Notes, which were accounted for at fair value; (v) fair value adjustments related to the CVRs, which met the definition of a derivative, (vi) income related to a German R&D tax credit receivable, and (vii) interest income, net.

Our other (expense) income is subject to variability due to changes in the fair value of the derivative liabilities as well as the potential variability of the royalty agreement liability, both of which are based on significant estimates regarding the timing and success of future development and commercialization activities.

Income Taxes

Since May 2018, we have not recorded any income tax benefits for NOLs. We believe, based upon the weight of available evidence, that it is more likely than not that all of our NOLs and tax credits will not be realized. Accordingly, we have established a valuation allowance against such deferred tax assets for all periods since inception.

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We assess our income tax positions and records tax benefits based upon management’s evaluation of the facts, circumstances, and information available at the reporting date. For those tax positions where it is more likely than not that a tax benefit will be sustained, we record the amount of tax benefit with a greater than 50% likelihood of being realized upon ultimate settlement with a taxing authority having full knowledge of all relevant information. For those income tax positions for which it is not more likely than not that a tax benefit will be sustained, no tax benefit is recognized in the consolidated financial statements.

We had no provision for income taxes for the years ended December 31, 2025 and 2024. As of December 31, 2025, we had federal and state NOL carryforwards in the amount of $129.4 million and $113.3 million, respectively, which may be available to offset future taxable income. Federal tax loss carryforwards that were created prior to December 31, 2017 expire through 2037 and federal losses created after that date do not expire. State loss carryforwards expire starting in 2035.

As of December 31, 2025, we had German corporate income tax and trade tax net operating loss carryforwards of approximately $219.4 million and $215.1 million, respectively. Under current German laws, tax loss carryforwards may only be used to offset any relevant later assessment period (calendar year) of $1.2 million plus 60% of the exceeding taxable income and trade profit of such period and do not expire. In addition, certain transactions, including transfers of shares or interest in the loss holding entity, may result in the partial or total forfeiture of tax losses existing at that date. Partial or total forfeiture of tax losses may further occur in corporate reorganizations of the loss holding entity.

Results of Operations

Comparison of the Years Ended December 31, 2025 and 2024

The following sets forth our results of operations (in thousands):

Year Ended December 31,
20252024$ Change
Operating expenses:
Research and development$22,841$8,151$14,690
General and administrative15,7615,9449,817
Total operating expenses38,60214,09524,507
Operating loss(38,602)(14,095)(24,507)
Other (expense) income:
Interest expense – royalty agreement(5,818)(3,887)(1,931)
Interest expense - convertible notes payable(430)430
Fair value adjustments on derivative liabilities – royalty agreement(394)(633)239
Fair value adjustments on convertible notes payable1,100(1,100)
Fair value adjustments on derivative liabilities – contingent value right liability(218)(1,978)1,760
Other income – German R&D tax credit receivable1,978(1,978)
Interest income, net2,5906421,948
Other income (expense), net727(131)858
Loss before income taxes(41,715)(17,434)(24,281)
Income tax benefit (expense)
Net loss$(41,715)$(17,434)$(24,281)

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Research and Development Expenses

The table below summarizes our research and development expenses incurred by development program (in thousands):

Year Ended December 31,
20252024$ Change
QTORIN rapamycin for microcystic LM$4,755$1,929$2,826
QTORIN rapamycin for microcystic LM - Government grant income(987)$(141)(846)
QTORIN rapamycin for cutaneous VM2,224$2961,928
QTORIN CMC6,953$1,6015,352
Non-program specific and unallocated research and development expenses:
Salaries and stock-based compensation6,6432,8103,833
Consultants1,9101,040870
Other1,343616727
Total research and development expenses$22,841$8,151$14,690

Research and development expenses for the year ended December 31, 2025 were $22.8 million, as compared to $8.2 million for the year ended December 31, 2024. The increase in research and development expenses during the year ended December 31, 2025 was primarily due to increased spending on the clinical development of QTORIN rapamycin for the treatment of microcystic LMs and cutaneous venous malformations, including conducting our Phase 3 SELVA and Phase 2 TOIVA trials, which were initiated in 2024. Additional increases include CMC costs for all programs and costs as a result of increased headcount in 2025.

General and Administrative Expenses

General and administrative expenses for the year ended December 31, 2025 were $15.8 million, as compared to $5.9 million for the year ended December 31, 2024. The increase in general and administrative expenses during the year ended December 31, 2025, as compared to the year ended December 31, 2024 was primarily due to increased headcount in 2025, as well as increased professional services related to operating as a publicly-traded company.

Total Other (Expense) Income

Total other (expense) income, net for the year ended December 31, 2025 was $3.1 million of expense, as compared to $3.3 million of expense for the year ended December 31, 2024. The significant components of other (expense) income are more fully described below.

Interest (expense) income – royalty agreement

During the year ended December 31, 2025, we recorded interest expense of approximately $5.8 million, as compared to interest expense of approximately $3.9 million for the year ended December 31, 2024, related to the change in fair value of our royalty agreement liability.

Interest expense - convertible notes payable

During the year ended December 31, 2024, we recorded interest expense of approximately $0.4 million related to the Convertible Notes, which were issued during the year ended December 31, 2024. No such expense was incurred during 2025. As more fully described in Note 7 of the accompanying notes to the consolidated financial statements contained elsewhere in this Annual Report on Form 10-K, upon the closing of the PIPE Financing, the entire outstanding principal amount and unpaid accrued interest on the Convertible Notes automatically converted into our common stock (or prefunded warrants to purchase common stock). Accordingly, no interest expense was incurred subsequent to the Closing Date.

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Fair value adjustments on derivative liabilities – royalty agreement

During the year ended December 31, 2025, we recorded a non-cash loss of approximately $0.4 million, as compared to a non-cash loss of approximately $0.6 million for the year ended December 31, 2024. The non-cash loss related to the change in fair value of our obligation to make future milestone payments under the Amended Ligand Agreement, which was determined to be a derivative liability.

Fair value adjustments on convertible notes payable

During the year ended December 31, 2024, we recorded $1.1 million of non-cash income from fair value adjustments on the Convertible Notes, which were issued in 2024 and converted to common stock (or prefunded warrants) upon closing of the PIPE Financing in December 2024.

Fair value adjustments on derivative liabilities – contingent value right liability

During the year ended December 31, 2025, we recorded a non-cash expense of approximately $0.2 million as compared to a non-cash expense of approximately $2.0 million from the year ended December 31, 2024, related to fair value adjustments related to the CVRs which were issued in 2024 in connection with the Business Combination and determined to be derivative liabilities. On the Closing Date, management concluded that there was no value associated with the CVRs as the likelihood of any payments received in connection with Pieris’ legacy assets was remote. Subsequent to the Closing Date and as of December 31, 2024, a $2.0 million German research and development tax credit receivable was recorded by Pieris Pharmaceuticals GmbH resulting in a corresponding increase to the contingent value rights liability.

Other income – German R&D tax credit receivable

During the year ended December 31, 2024, we recorded $2.0 million of income related to a German research and development tax credit receivable recorded by Pieris Pharmaceuticals GmbH at December 31, 2024.

Interest income, net

During the year ended December 31, 2025, we recorded interest income, net of $2.6 million, as compared to $0.6 million for the year ended December 31, 2024. The increase was primarily due to increases in the average balances held in interest-bearing cash and money market funds.

Net Loss

As a result of the factors discussed above, our net loss for the years ended December 31, 2025 and 2024 was $41.7 million and $17.4 million, respectively.

Liquidity and Capital Resources

Sources of Liquidity

Since inception, we have incurred substantial losses, and have primarily funded our operations with proceeds from the Amended Ligand Agreement and the sale of debt and equity securities, including common stock, convertible preferred stock and convertible notes. During the year ended December 31, 2025, we incurred a net loss of $41.7 million and reported net cash used in operating activities of $25.0 million. As of December 31, 2025, we had an accumulated deficit of $135.5 million and cash and cash equivalents of $58.0 million. As discussed below, in February 2026, we completed an underwritten public offering of common stock resulting in net proceeds of approximately $215.8 million. Our primary use of cash is to fund operating expenses, which consist primarily of research and development expenditures, and, to a lesser extent, general and administrative expenditures.

We do not expect to generate commercial revenue or operating cash flows in the near-term, including the next two years. Our ability to continue as a going concern in the near term is largely dependent on our existing cash balance and our ability to obtain additional sources of financing in order to fund operating expenses, complete development of our product candidates, obtain regulatory approvals, launch, and commercialize our product candidates, and continue research and development programs.

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February 2026 Public Offering

On February 27, 2026, we completed an underwritten public offering of 1,840,000 shares of our common stock, including the exercise in full of the underwriters’ overallotment option to purchase additional shares of common stock, at a price to the public of $125.00 per share. The offering resulted in net proceeds of approximately $215.8 million, after deducting underwriting discounts and commissions and other offering expenses.

PIPE Financing

Concurrently with the execution of the Merger Agreement on July 23, 2024, Pieris entered into a securities purchase agreement (the “Purchase Agreement”) with certain investors, including BVF Partners, L.P., an existing stockholder of Pieris (the “PIPE Investors”), pursuant to which, among other things, on the Closing Date and immediately following the consummation of the Merger, the PIPE Investors purchased (either for cash or in exchange for the termination and cancellation of outstanding convertible promissory notes issued by Legacy Palvella), and the Company issued and sold to the PIPE Investors, (i) 3,168,048 shares of Common Stock and (ii) Pre-Funded Warrants, exercisable for 2,466,456 shares of Common Stock, at a purchase price of $13.9965 per share or $13.9955 per Pre-Funded Warrant, which represents the per share purchase price of Common Stock less the $0.001 per share exercise price for each Pre-Funded Warrant, for an aggregate purchase price of approximately $78.9 million, consisting of approximately $60.0 million in cash and the conversion of approximately $18.9 million of principal and interest under outstanding convertible notes issued by Legacy Palvella (the “PIPE Financing”).

Convertible Notes

On June 6, 2024, Legacy Palvella initiated a sequence of convertible notes with certain investors via a Convertible Note Purchase Agreement, pursuant to which the Company issued convertible notes in the aggregate principal amount of approximately $18.4 million (the “Convertible Notes”) between June 2024 and December 2024. Simple interest accrued on the outstanding principal amount of the Convertible Notes at an annual rate of SOFR plus 2.0% per annum. Unless earlier converted, the maturity date of the Convertible Notes was the earliest to occur of (i) the date that Legacy Palvella received approval of an NDA by the FDA of QTORIN rapamycin in the United States, or (ii) June 3, 2027. Upon the closing of the PIPE Financing (defined above), the entire outstanding principal amount and unpaid accrued interest on the convertible notes automatically converted into an aggregate of 1,179,163 shares of Common Stock and 168,503 prefunded warrants.

Future Funding Requirements

We have not generated product revenue or achieved profitability since our inception and expect to continue to incur net losses for the foreseeable future. As of December 31, 2025, we had approximately $58.0 million in cash and cash equivalents. In February 2026, we completed a public offering of common stock resulting in net proceeds of approximately $215.8 million. Based on our current business plans, we believe that our existing cash and cash equivalents will be sufficient to fund our planned operations for at least the one year period following the date of the filing of this Form 10-K. Moreover, we expect our losses to increase as we continue to advance our product candidates through clinical trials and regulatory submissions. We may also incur expenses in connection with the in-licensing or acquisition of additional product candidates, which may not be currently contemplated in our planned operations. Furthermore, following the closing of the Merger, we expect to incur additional costs associated with operating as a public company, including significant legal, accounting, investor relations and other expenses that we did not incur as a private company. Our primary uses of capital have been, and we expect will continue to be, compensation and related expenses, third-party clinical research, manufacturing and development services, license payments or milestone obligations that may arise, manufacturing costs, legal and other regulatory expenses and general overhead costs.

Based upon our current operating plan, we believe that our cash and cash equivalents on hand as of December 31, 2025 will be sufficient to fund our operating expenses for at least the next twelve months from the date of this Annual Report on Form 10-K. To continue to finance our operations beyond that point, we may need to raise additional capital, the success of which cannot be assured. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we currently expect. If we receive regulatory approval for QTORIN rapamycin for the treatment of microcystic LM, cutaneous VMs, clinically significant angiokeratomas, QTORIN pitavastatin for the treatment of disseminated superficial actinic porokeratosis, or any of our future product candidates, we expect to incur significant commercialization expenses related to manufacturing, sales, marketing, and

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distribution, or from any out-licensing of the product. We are also responsible for up to $5.0 million in milestone payments to Ligand under the Amended Ligand Agreement upon the achievement of certain regulatory milestones by us related to QTORIN rapamycin, which may be triggered prior to the commercialization of any of our product candidates and ability to generate revenue.

To the extent that we raise additional capital by issuing equity securities, our existing stockholders may experience substantial dilution, and the terms of these securities may include liquidation or other preferences detrimental to the rights of our common stockholders. Any agreements for future debt or preferred equity financings, if available, may involve covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may be required to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates, or grant licenses on terms that may not be favorable to us. We may seek additional capital due to favorable market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans.

Our future funding requirements depend on many factors, including, but not limited to:


timing and outcome of regulatory review for QTORIN rapamycin for the treatment of microcystic LM, or our other product candidates;


the cost of commercialization and manufacturing activities with respect to QTORIN rapamycin, QTORIN pitavastatin and our ability to successfully commercialize this product candidate, if approved;


the scope, progress, results and costs of researching and developing QTORIN rapamycin, or any future product candidates, and conducting preclinical studies and clinical trials;


the number and scope of clinical programs we decide to pursue;


the cost of manufacturing our product candidates and any products we commercialize, including costs associated with developing our supply chain;


the cost of commercialization activities if any of our product candidates are approved for sale, including marketing, sales and distribution costs;


our ability to establish and maintain strategic collaborations, licensing or other arrangements and the financial terms of any such agreements that we may enter into;


the timing and sales of any future approved products, if any;


the potential size of the markets, degree of market acceptance, as well as the pricing and reimbursement for our approved products, if any;


the timing and amount of milestone or royalty payments due under the Ligand Agreements or under similar arrangements with any future collaboration or licensing partners;


the expenses needed to attract and retain skilled personnel;


Our need to implement additional internal systems and infrastructure, including financial and reporting systems, and other costs associated with being a public company; and


the costs involved in preparing, filing, prosecuting, maintaining, defending and enforcing our intellectual property portfolio.

Further, our development and commercialization operating plans may change, and we may need additional funds to meet operational needs and capital requirements for clinical trials and other research and development activities and commercialization of QTORIN rapamycin, if approved. Because of the numerous risks and uncertainties associated with the development and commercialization of our product candidates, we may be unable to estimate the amounts of

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increased capital outlays and operating expenditures associated with our current and anticipated product development programs.

Cash Flows

The following table summarizes our cash flows for the years ended December 31, 2025 and 2024 (in thousands):

Year Ended December 31,
20252024
Net cash used in operating activities$(25,006)$(10,840)
Net cash (used in) provided by financing activities(660)87,089
Effect of exchange rate change on cash and cash equivalents463
Net (decrease) increase in cash and cash equivalents$(25,620)$76,252

Net cash used in operating activities

Net cash used in operating activities for the years ended December 31, 2025 and 2024 consisted of net loss for the period adjusted for non-cash items and changes in components of operating assets and liabilities. The primary use of cash was to fund our operations related to the development of our product candidates, including general and administrative support, which increased due to greater research and development efforts in 2025, increased costs to operate as a public company, as well as the timing of payments and increase in accounts payable.

Net cash provided by financing activities

For the year ended December 31, 2025, net cash used in financing activities was $0.7 million, consisting primarily of payments of transaction costs incurred in connection with the Business Combination and proceeds from the exercise of options.

For the year ended December 31, 2024, net cash provided by financing activities was $87.1 million, which was primarily attributable to $13.8 million of cash acquired in connection with the Business Combination, $60.0 million in gross proceeds from the PIPE Financing, and $18.4 million in gross proceeds from the issuance of the Convertible Notes, partially offset by payment of transaction costs in connection with Business Combination of $2.5 million, payments of transaction costs associated with PIPE Financing of $2.5 million, and payments of transaction costs to issue the Convertible Notes of $0.1 million.

Contractual Obligations and Commitments

Leases

We lease office space in Wayne, Pennsylvania. Our future lease payments for these facilities are $0.7 million for the remaining term.

Ligand Agreement

We are party to a Development Funding and Royalties Agreement with Ligand Pharmaceuticals, Inc. (“Ligand”), dated December 13, 2018, as amended May 22, 2020 and November 28, 2023 (the “Ligand Agreement”). Under the Ligand Agreement, Ligand has made payments totaling $15.0 million to fund the development of QTORIN rapamycin. As partial consideration for the funding received, we granted Ligand the right to receive up to $8.0 million in milestone payments upon achievement of certain corporate, financing and regulatory milestones by us related to QTORIN rapamycin for the treatment of any and all indications, of which $5.0 million of potential future milestone payments remain under the arrangement. In addition, we agreed to pay to Ligand tiered royalties ranging from 8.0% to 9.8% of any aggregate annual worldwide net product sales of any products based on QTORIN rapamycin.

Other

Further, we enter into contracts in the normal course of business with service providers for clinical trials, preclinical research studies and testing, manufacturing, and other services and products for operating purposes. Our payment obligations under these contracts generally provide for termination upon notice and, therefore, we believe that our

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non-cancelable obligations under these agreements are not material and we cannot reasonably estimate the timing of any such payments or if and when they will occur.

We may also enter into additional research, manufacturing, supplier and other agreements in the future, which may require up-front payments or long-term commitments of cash.

Critical Accounting Policies and Significant Judgments and Estimates

Management’s discussion and analysis of our financial condition and results of operations is based on the audited consolidated financial statements included elsewhere in this Form 10-K, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported expenses incurred during the reporting periods. Our estimates are based on our historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Our actual results may differ from these estimates under different assumptions or conditions.

While our significant accounting policies are more fully described in the notes to the audited consolidated financial statements included elsewhere in this Form 10-K, we believe that the accounting policies discussed below are critical to understanding our historical and future performance, as these policies relate to the more significant areas involving management’s judgments and estimates.

Research and Development Expenses and Accruals

We estimate costs of research and development activities conducted by service providers, which include, the conduct of sponsored research, preclinical studies and contract manufacturing activities. We record the estimated costs of research and development activities based upon the estimated amount of services provided but not yet invoiced and include these costs in accrued expenses and other current liabilities or prepaid expenses and other current assets on the balance sheets and within research and development expense on the statements of operations.

We estimate these costs based on factors such as estimates of the work completed and budget provided and in accordance with agreements established with our collaboration partners and third-party service providers. As actual costs become known, we adjust accrued liabilities or prepaid expenses. While our actual results could differ from their estimates, we have not experienced any material differences between accrued costs and actual costs incurred since our inception.

Our expenses related to clinical trials are based on estimates of patient enrollment and related expenses at clinical trial investigator sites as well as estimates for the services received and efforts expended pursuant to contracts with multiple research institutions that may be used to conduct and manage clinical trials on our behalf. We generally accrue expenses related to clinical trials based on contracted amounts applied to the level of patient enrollment and activity. If timelines or contracts are modified based upon changes in the clinical trial protocol or scope of work to be performed, we modify estimates of accrued expenses accordingly on a prospective basis.

Ligand Agreement

Under the terms of the Amended Ligand Agreement, we received $15.0 million to fund the development of QTORIN rapamycin, in exchange for Ligand’s right to receive future payments based on the development and commercialization of products covered under the Amended Ligand Agreement. Ligand is entitled to receive up to an additional $5.0 million of milestone payments upon the achievement of certain regulatory milestones by us related to QTORIN rapamycin for the treatment of any and all indications. Our obligation to make milestone payments under the Amended Ligand Agreement was determined to be a derivative liability, and our obligation to make future royalty payments was determined to be a debt instrument.

The accounting for liabilities under the Amended Ligand Agreement requires us to make certain estimates and assumptions about the timing and probability of FDA approval and commercialization, and the amount of future net sales for any product containing QTORIN rapamycin. The estimated future net sales are based on subjective

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assumptions that include the estimated size of the addressable patient population and the anticipated pricing of the Company’s products. These assumptions are subject to significant variability, and are thus subject to significant uncertainty.

Royalty payments will be recorded as debt service payments on the royalty agreement liability. Interest expense is determined using the effective interest method based upon risk adjusted cash flow estimates of our expected future royalty payments, yielding an effective interest rate of 44.9% and 39.9% as of December 31, 2025 and 2024, respectively. The effective interest rate is estimated at each balance sheet date based on the rate that would enable the liability to be repaid in full over the anticipated life of the arrangement. This effective interest rate will likely be subject to variability as we continue the development and commercialization of our products. The derivative liabilities — royalty agreement is classified as long term on our balance sheet according to the estimated timing of the occurrence of potential payments.

The fair value of the derivative liabilities — royalty agreement with respect to the potential milestone payments is determined based upon the estimated probabilities and timing of the achievement of milestones, discounted to present value using our estimated weighted average cost of capital. The assumptions used to determine the fair value of the derivative liabilities — royalty agreement at December 31, 2025 and 2024 were (a) weighted cost of capital of 18.0% and 20.0%; and (b) 56.6% and 56.6% probability of achieving regulatory approval of a product by the FDA with a term of 1.50 years and 2.50 years, respectively. Gains and losses arising from changes in fair value of the derivative liabilities — royalty agreement are recognized within our statements of operations as fair value adjustments on the derivative liabilities — royalty agreement and in the balance sheet as a non-current liability for each financial reporting period.

Our estimates and assumptions with respect to the royalty agreement liability and derivative liabilities — royalty agreement are likely to change as we develop and commercialize QTORIN rapamycin, if approved. Any such adjustments that may become necessary will impact the recorded value of the royalty agreement liability and the derivative liabilities — royalty agreement, the accretion of interest expense on the royalty agreement liability and the fair value adjustments on derivative liabilities — royalty agreement.

CVR Agreement

Under the terms of the CVR Agreement, legacy Pieris stockholder’s have the right to receive payments upon the receipt of payments by the us or any of our affiliates under certain strategic partner agreements, including existing collaboration agreements pursuant to which we may be entitled to milestones and royalties in the future and other out-licensing agreements for certain of Pieris’s legacy assets, and upon the receipt of certain research and development tax credits in favor of us or any of its affiliates, in each case as set forth in, and subject to and in accordance with the terms and conditions of, the CVR Agreement.

Management concluded that the CVRs meet the definition of a derivative and will be initially measured at the aggregate estimated fair value of the CVRs and will be subsequently remeasured at estimated fair value on a recurring basis at each reporting period date. Changes in fair value of the CVR derivative are presented in the consolidated statements of operations and comprehensive income (loss). To determine the derivative value at each reporting period, management applies a scenario-based method and weighs them based on the possible likelihood of certain contingencies triggering payments due under the CVR for the liability recognized. The fair value measurements are based on significant inputs not observable in the market, such as estimated cash flows, estimated probabilities of success, and risk-adjustment discount rates, and thus represent a Level 3 measurement as defined in ASC 820, Fair Value Measurement. The estimated value of the CVR is based upon available information and certain assumptions, which our management believes are reasonable under the circumstances.

As of the Closing Date, management concluded that there was no value associated with the CVRs as the likelihood of any payments received in connection with Pieris’ legacy assets was remote. As of December 31, 2025, management recorded a contingent rights value liability of approximately $2.2 million due to a receivable for research and development tax credits by Pieris Pharmaceuticals GmbH at December 31, 2025. In January 2026, the Company paid out approximately $2.0 million to holders of CVRs related to receipt of certain research and development tax credits.

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Stock-Based Compensation

We account for stock-based compensation in accordance with ASC Topic 718, Compensation – Stock Compensation (“ASC 718”). ASC 718 requires all stock-based payments, including grants of stock options and restricted stock, to be recognized in the consolidated statements of operations based on their fair values. All of the stock-based awards are subject only to service-based vesting conditions. Management estimates the fair value of the stock option awards using the Black-Scholes option pricing model, which requires the input of assumptions, including (a) the fair value of the Company’s common stock, (b) the expected stock price volatility, (c) the calculation of expected term of the award, (d) the risk-free interest rate and (e) expected dividends. Management estimates the fair value of the restricted stock awards using the fair value of the Company’s common stock. Forfeitures are recognized as they are incurred.

Prior to the Merger, we periodically estimated the fair value of the our common stock considering, among other things, valuations of its common stock prepared by management with the assistance of a third-party valuation firm in accordance with the guidance provided by the American Institute of Certified Public Accountants 2013 Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation.

Following the Merger, the fair value of our common stock is based on the closing stock price on the date of grant as reported on the Nasdaq Global Market. The expected life of the stock options in years is estimated using the “simplified method,” as prescribed in SEC’s Staff Accounting Bulletin (SAB) No. 107, as the Company has no historical information from which to develop reasonable expectations about future exercise patterns and post-vesting employment termination behavior for its stock option grants. The simplified method is the midpoint between the vesting period and the contractual term of the option. For stock price volatility, we use comparable public companies as a basis for its expected volatility to calculate the fair value of option grants. The risk-free rate is based on the U.S. Treasury yield curve commensurate with the expected life of the option. The expected dividend yield is zero as the Company has no history of paying dividends and no plans to do so in the near term. We classify stock-based compensation expense in our consolidated statement of operations and comprehensive (loss) income in the same manner of the award recipient’s payroll costs.

Recently Adopted Accounting Pronouncements

Refer to Note 2, “Summary of Significant Accounting Policies,” of the notes to our audited consolidated financial statements appearing elsewhere in this Form 10-K for a discussion of recent accounting pronouncements.

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: 0000950170-25-047212.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Confidence: high. Filing date: 2025-03-31. Report date: 2024-12-31.

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

The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated audited financial statements and accompanying notes appearing elsewhere in this Form 10-K. In addition to historical information, this discussion and analysis includes forward-looking statements that are subject to risks and uncertainties, including those discussed in the section titled “Risk Factors,” set forth in Part I, Item 1A of this Form 10-K, that could cause actual results to differ materially from historical results or anticipated results.

Unless otherwise indicated or the context otherwise requires, references in this “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section to “the Company,” “we,” “us,” and “our” refer to the business and operations of Palvella Therapeutics, Inc., a Delaware corporation (referred to as “Legacy Palvella”) prior to the Merger, and the business and operations of Palvella Therapeutics, Inc., a Nevada Corporation (previously Pieris Pharmaceuticals, Inc., referred to as “Pieris”) and its consolidated subsidiaries following the Merger.

Overview

We are a clinical-stage biopharmaceutical company whose vision is to become the leading rare disease biopharmaceutical company focused on developing and, if approved, commercializing novel therapies to treat patients suffering from serious, rare genetic skin diseases for which there are no FDA-approved therapies. We intend to leverage our versatile QTORIN platform to treat these patients. The QTORIN platform is designed to generate potential new therapies that penetrate the deep layers of the skin to locally treat a broad spectrum of rare genetic skin diseases. Our lead product candidate, QTORIN 3.9% rapamycin anhydrous gel (“QTORIN rapamycin”), is currently in clinical development for microcystic lymphatic malformations (“microcystic LMs”) and cutaneous venous malformations (“cutaneous VMs”). QTORIN rapamycin contains the API rapamycin, also known as sirolimus, which is an inhibitor of mTOR, a kinase that has been known to play a key role in cell growth and proliferation.

We currently have two ongoing clinical trials: (i) SELVA, a Phase 3, single-arm, baseline-controlled study evaluating the safety and efficacy of QTORIN rapamycin for the treatment of microcystic LMs in patients 3 years and older and (ii) TOIVA, a Phase 2, single-arm, open-label, baseline-controlled study evaluating the safety and efficacy of QTORIN rapamycin for the treatment of cutaneous VMs in patients 6 years and older. We also have additional preclinical research programs based on our QTORIN platform for the treatment of serious, rare genetic skin diseases for which we believe there are significant unmet needs. As we plan to expand our pipeline into additional rare skin diseases, we plan to generate new product candidates with our QTORIN platform.

In the third quarter of 2024, we initiated SELVA, a 24-week, Phase 3, single-arm, baseline-controlled clinical trial of QTORIN rapamycin administered once daily for the treatment of microcystic LMs. The primary efficacy endpoint is the change from baseline in the overall microcystic LM Investigator Global Assessment, a 7-point clinician rated changes scale, at week 24. In the first quarter of 2025, we announced the expansion of our SELVA trial to include patients ages 3 to 5 years old. Previously, trial participants were required to be at least 6 years old. We expect to report top-line data for the Phase 3 study in approximately 40 participants with microcystic LMs in the first quarter of 2026.

In the first quarter of 2025, we announced the first patients have recently been dosed in TOIVA, a multicenter, single-arm, open-label, baseline-controlled, Phase 2 clinical trial designed to evaluate the safety and efficacy of QTORIN rapamycin for the treatment of cutaneous VMs. We expect to report top-line data for the TOIVA study in approximately 15 participants with cutaneous VMs in the fourth quarter of 2025.

We have received Breakthrough Therapy Designation, Fast Track Designation, and Orphan Drug Designation from the FDA for QTORIN rapamycin for the treatment of microcystic LMs. In addition, we have been awarded an FDA Products Clinical Trial Grant for up to $2.6 million supporting the SELVA program. We have also received Fast Track Designation from the FDA for our venous malformations program.

There are no FDA-approved therapies currently indicated for either microcystic LMs or cutaneous VMs. If approved for the treatment of microcystic LMs or cutaneous VMs, we believe QTORIN rapamycin has the potential to become the standard of care for these disease indications.

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The Business Combination

On December 13, 2024 (the “Closing Date”), we consummated the previously announced business combination contemplated by that certain Agreement and Plan of Merger, dated July 23, 2024 (the “Merger Agreement”), by and among the Company, Polo Merger Sub, Inc. (“Merger Sub”), and Palvella Therapeutics, Inc. (“Legacy Palvella”). Pursuant to the Merger Agreement, on the Closing Date, (i) Merger Sub merged with and into Legacy Palvella, with Legacy Palvella as the surviving company in the merger and, after giving effect to such merger, continuing as a wholly owned subsidiary of the Company (the “Merger” and, together with the other transactions contemplated by the Merger Agreement, the “Business Combination”) and (ii) the Company’s name was changed from Pieris Pharmaceuticals, Inc. to Palvella Therapeutics, Inc.

The Business Combination was accounted for as a reverse recapitalization in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). Under this method of accounting, Pieris was treated as the “acquired” company and Legacy Palvella is treated as the acquirer for financial reporting purposes as more fully explained in Note 1 and Note 3 of the accompanying notes to the consolidated financial statements contained elsewhere in this Annual Report on Form 10-K.

PIPE Financing

Concurrently with the execution of the Merger Agreement on July 23, 2024, Pieris entered into a securities purchase agreement (the “Purchase Agreement”) with certain investors, including BVF Partners, L.P., an existing stockholder of Pieris (the “PIPE Investors”), pursuant to which, among other things, on the Closing Date and immediately following the consummation of the Merger, the PIPE Investors purchased (either for cash or in exchange for the termination and cancellation of outstanding convertible promissory notes issued by Legacy Palvella), and the Company issued and sold to the PIPE Investors, (i) 3,168,048 shares of common stock and (ii) Pre-Funded Warrants, exercisable for 2,466,456 shares of common stock, at a purchase price of $13.9965 per share or $13.9955 per Pre-Funded Warrant, which represents the per share purchase price of the common stock less the $0.001 per share exercise price for each Pre-Funded Warrant, for an aggregate purchase price of approximately $78.9 million, consisting of approximately $60.0 million in cash and the conversion of approximately $18.9 million of principal and interest under outstanding convertible notes issued by Legacy Palvella (the “PIPE Financing”).

Contingent Value Rights Agreement

On December 13, 2024, immediately prior to closing of the Merger, we entered into a Contingent Value Rights Agreement (the “CVR Agreement”) with a rights agent, pursuant to which our pre-Merger capital stockholders received one contingent value right (each, a “CVR”) for each outstanding share of our common stock held by such stockholder, or share of common stock underlying preferred stock held by such stockholder, on such date. Each CVR represents the contractual right to receive payments upon the receipt of payments by us or any of its affiliates under certain strategic partner agreements, including existing collaboration agreements pursuant to which we may be entitled to milestones and royalties in the future and other out-licensing agreements for certain of Pieris’ legacy assets, and upon the receipt of certain research and development tax credits in favor of us or any of its affiliates, in each case as set forth in, and subject to and in accordance with the terms and conditions of, the CVR Agreement. There can be no assurance that holders of CVRs will receive any amounts with respect thereto.

Convertible Note Financing

Between June and July 2024, Legacy Palvella issued convertible notes in the aggregate principal amount of approximately $18.4 million (the “Convertible Notes”). Simple interest accrued on the outstanding principal amount of the Convertible Notes at an annual rate of SOFR plus 2.0% per annum. Unless earlier converted, the maturity date was the earliest to occur of (i) the date that Legacy Palvella received approval of an NDA by the FDA of the QTORIN rapamycin in the United States, or (ii) the date that is June 3, 2027. Upon the closing of the PIPE Financing, the entire outstanding principal amount and unpaid accrued interest on the convertible notes automatically converted into an aggregate of 1,179,163 shares of common stock and 168,503 prefunded warrants. See Note 7 of the accompanying notes to the consolidated financial statements contained elsewhere in this Annual Report on Form 10-K.

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Ligand Development Funding and Royalties Agreement

In December 2018, Legacy Palvella entered into the Original Ligand Agreement, whereby Ligand made a one-time payment of $10.0 million to fund the development of QTORIN rapamycin. In November 2023, pursuant to the Amended Ligand Agreement, Ligand made an additional one-time payment of $5.0 million to fund the development of QTORIN rapamycin. Under the Amended Ligand Agreement, Ligand is entitled to receive up to $8.0 million in milestone payments upon the achievement of certain milestones by us related to QTORIN rapamycin for the treatment of any and all indications, of which $5.0 million of potential future milestone payments remain under the arrangement. In addition, we agreed to pay to Ligand tiered royalties from 8.0% to 9.8% based on any aggregate annual worldwide net product sales of any products based on QTORIN rapamycin. The Amended Ligand Agreement includes an option for Ligand to purchase additional product revenue participation rights from us over a certain period of time (as set forth in the Amended Ligand Agreement). The option allows Ligand, for each product developed on the QTORIN platform that completes the first human clinical trial in the United States, the opportunity to make an upfront payment (as set forth in the Amended Ligand Agreement) to us in return for a royalty rate (as set forth in the Amended Ligand Agreement). See Note 5 of the accompanying notes to the consolidated financial statements contained elsewhere in this Annual Report on Form 10-K.

Impact of Global Economic Events

Uncertainty in the global economy presents significant risks to our business. We are subject to continuing risks and uncertainties in connection with the current macroeconomic environment, including increases in inflation and geopolitical factors, including the ongoing conflict between Russia and Ukraine and the responses thereto, and supply chain disruptions. While our management is closely monitoring the impact of the current macroeconomic conditions on all aspects of our business, including the impacts on its participants in its Phase 3 clinical trials, employees, suppliers, vendors and business partners, the ultimate extent of the impact on our business remains highly uncertain and will depend on future developments and factors that continue to evolve. Most of these developments and factors are outside our control and could exist for an extended period of time. Management will continue to evaluate the nature and extent of the potential impacts to our business, results of operations, liquidity and capital resources. For additional information, see Part I, Item 1A “Risk Factors”.

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Components of Operating Results

Operating Expenses

Our operating expenses since inception have consisted primarily of research and development expenses and general and administrative costs.

We expect to continue to incur significant operating losses for the foreseeable future and to incur increased expenses as we continue to advance our product candidates through clinical trials and regulatory submissions. We may also incur expenses in connection with the in-licensing or acquisition of additional product candidates. Furthermore, we expect to incur additional costs associated with operating as a public company, including significant legal, accounting, investor relations and other expenses that Legacy Palvella did not incur as a private company. If we receive regulatory approval for QTORIN rapamycin for treatment of Microcystic LM, venous malformations or any future product candidates, we expect to incur significant commercialization expenses related to product manufacturing, marketing, sales and distribution. Our losses may fluctuate significantly from quarter-to-quarter and year-to-year, depending on the timing of our clinical trials and our expenditures on other research and development activities.

Research and Development Expenses

Our research and development expenses consist primarily of costs incurred for the development of its product candidates, which include:


costs related to production of preclinical and clinical materials, including CMC fees paid to CMOs;


personnel costs, including salaries, related benefits and stock-based compensation expense for employees engaged in research and development functions;


vendor expenses related to the execution of preclinical studies and clinical trials;


expenses incurred under agreements with consultants that conduct research and development activities on our behalf;


costs related to compliance with regulatory requirements; and


allocated overhead, including rent, equipment and information technology costs.

We expense all research and development expenses in the periods in which they are incurred. Costs for certain research and development activities are recognized based on an evaluation of the progress to completion of specific tasks using information and data provided to us by our vendors and other service providers. This process involves reviewing open contracts, communicating with our personnel to identify services that have been performed on our behalf and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of actual costs. Any nonrefundable advance payments that we make for goods or services to be received in the future for use in research and development activities are recorded as prepaid expenses. Such amounts are expensed as the related goods are delivered or the related services are performed, or until it is no longer expected that the goods will be delivered or the services rendered.

Our indirect research and development expenses are not currently tracked on a program-by-program basis. We use our personnel and infrastructure resources across multiple research and development programs to identify and develop product candidates.

Research and development activities account for a significant portion of our operating expenses. We expect our research and development expenses to increase substantially for the foreseeable future as we continue to invest in research and development activities related to developing our product candidates, including investments in advancing our programs and conducting clinical trials. In particular, we expect to incur substantial research and development expenses to continue late-stage clinical development and pursue regulatory approvals of QTORIN rapamycin for the treatment of microcystic LM, venous malformations and the development of our preclinical programs. Product candidates in later stages of clinical development generally incur higher development costs than those in earlier stages,

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primarily due to the increased size and duration of later-stage clinical trials. As a result, we expect our research and development expenses to increase as our product candidates advance into later stages of clinical development.

Because of the numerous risks and uncertainties associated with product development and the current stage of development of our product candidates and programs, we cannot reasonably estimate or know the nature, timing and estimated costs necessary to complete the remainder of the development of our product candidates or programs. The duration, costs and timing of preclinical studies and clinical trials and development of our product candidates will depend on a variety of factors, including:


timely completion of our preclinical studies and clinical trials, which may be significantly slower or cost more than we currently anticipate and may depend substantially upon the performance of certain third-party contractors;


delays in validating, or inability to validate, any endpoints utilized in a clinical trial;


the prevalence, duration and severity of potential side effects or other safety issues experienced with our product candidates, if any, or experienced by competitors who are developing topical rapamycin products or who are targeting the same indications in the rare genetic skin diseases space;


the ability of CMOs upon which we rely to manufacture clinical supplies of our product candidates or any future product candidates to remain in good standing with relevant regulatory authorities and to develop, validate and maintain commercially viable manufacturing processes that are compliant with cGMP;


our ability to retain patients who have enrolled in a clinical study but may be prone to withdraw due to the rigors of the clinical trial, lack of efficacy, side effects, personal issues or loss of interest;


our ability to establish and enforce intellectual property rights in and to our current product candidates or any future product candidates; and


minimizing and managing any delay or disruption to our ongoing or planned clinical trials.

A change in the outcome of any of these factors with respect to the development of any of our product candidates would significantly change the costs and timing associated with the development of that product candidate.

We may never succeed in achieving regulatory approval for any of our product candidates. Our preclinical studies and clinical trials may be unsuccessful. We may elect to discontinue, suspend or modify clinical trials of some product candidates or focus on others. A change in the outcome of any of these factors could mean a significant change in the costs and timing associated with the development of our current and future preclinical and clinical product candidates. For example, if the FDA or another regulatory authority were to require us to conduct additional clinical trials beyond those that we currently anticipate will be required for the completion of any of our product candidates’ clinical development, or if we experience significant delays in execution of or enrollment in any of our preclinical studies or clinical trials, we could be required to expend significant additional financial resources and time on the completion of preclinical and clinical development for such product candidates.

General and Administrative Expenses

Our general and administrative expenses consist primarily of the following costs:


personnel costs, including salaries, related benefits, travel and stock-based compensation expense for personnel in executive, finance and administrative functions; and


professional fees for legal, intellectual property, information technology, financial, human resources, consulting, audit and accounting services not otherwise included in research and development expenses.

We anticipate that our general and administrative expenses will increase substantially in the future as we increase our headcount to support our organizational growth. Following the completion of the Merger, we also anticipate that we will incur increased accounting, audit, legal, regulatory, compliance and director and officer insurance costs as well

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as investor and public relations expenses associated with our operations as a public company. In addition, if we obtain regulatory approval for a product candidate and do not enter into a third-party commercialization collaboration, we expect to incur significant expenses related to building a sales and marketing organization to support product sales, marketing and distribution activities.

Other (Expense) Income

Our other (expense) income for the years ended December 31, 2024 and 2023 primarily consists of: (i) non-cash interest (expense) income related to our obligation to make future royalty payments pursuant to the Ligand Agreements, which was determined to be a debt instrument; (ii) interest expense related to the Convertible Notes; (iii) fair value adjustments related to our obligation to make future milestone payments under the Amended Ligand Agreement, which was determined to be a derivative liability; (iv) fair value adjustments related to the Convertible Notes, which were accounted for at fair value; (v) fair value adjustments related to the CVRs, which met the definition of a derivative, (vi) a non-cash gain on the extinguishment of the Original Ligand Agreement, and (vii) income related to a German R&D tax credit receivable.

Our other (expense) income is subject to variability due to changes in the fair value of the derivative liabilities as well as the potential variability of the royalty agreement liability, both of which are based on significant estimates regarding the timing and success of future development and commercialization activities.

Income Taxes

Since May 2018, we have not recorded any income tax benefits for NOLs. We believe, based upon the weight of available evidence, that it is more likely than not that all of our NOLs and tax credits will not be realized. Accordingly, we have established a valuation allowance against such deferred tax assets for all periods since inception.

We assess our income tax positions and records tax benefits based upon management’s evaluation of the facts, circumstances, and information available at the reporting date. For those tax positions where it is more likely than not that a tax benefit will be sustained, we record the amount of tax benefit with a greater than 50% likelihood of being realized upon ultimate settlement with a taxing authority having full knowledge of all relevant information. For those income tax positions for which it is not more likely than not that a tax benefit will be sustained, no tax benefit is recognized in the consolidated financial statements.

We had no provision for income taxes for the years ended December 31, 2024 and 2023. As of December 31, 2024, we had federal and state NOL carryforwards in the amount of $97.4 million and $97.8 million, respectively, which may be available to offset future taxable income. Federal tax loss carryforwards that were created prior to December 31, 2017 expire through 2037 and federal losses created after that date do not expire. State loss carryforwards expire starting in 2035.

As of December 31, 2024, we had German corporate income tax and trade tax net operating loss carryforwards of approximately $210.3 million and $205.9 million respectively. Under current German laws, tax loss carryforwards may only be used to offset any relevant later assessment period (calendar year) of $1.2 million plus 60% of the exceeding taxable income and trade profit of such period and do not expire. In addition, certain transactions, including transfers of shares or interest in the loss holding entity, may result in the partial or total forfeiture of tax losses existing at that date. Partial or total forfeiture of tax losses may further occur in corporate reorganizations of the loss holding entity.

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Results of Operations

Comparison of the Years Ended December 31, 2024 and 2023

The following sets forth our results of operations (in thousands):

Year Ended December 31,Change
20242023$%
Operating expenses:
Research and development$8,151$8,793$(642)-7%
General and administrative5,9443,0762,86893%
Total operating expenses14,09511,8692,22619%
Operating loss(14,095)(11,869)(2,226)19%
Other (expense) income:
Interest (expense) income – royalty agreement(3,887)6,265(10,152)-162%
Interest expense - convertible notes payable(430)(430)-100%
Fair value adjustments on derivative liabilities – royalty agreement(633)485(1,118)-231%
Fair value adjustments on convertible notes payable1,1001,100100%
Fair value adjustments on derivative liabilities – contingent value right liability(1,978)(1,978)-100%
Gain on extinguishment – royalty agreement23,098(23,098)-100%
Other income – German R&D tax credit receivable1,9781,978100%
Other income, net511712(201)-28%
(Loss) income before income taxes(17,434)18,691(36,125)-193%
Income tax benefit (expense)0%
Net (loss) income$(17,434)$18,691$(36,125)-193%

Research and Development Expenses

The table below summarizes our research and development expenses incurred by development program (in thousands):

Year Ended December 31,Change
20242023$%
QTORIN rapamycin for PC and GS$$3,682$(3,682)-100%
QTORIN rapamycin for microcystic LM1,9291641,7651076%
QTORIN rapamycin for microcystic LM - Government grant income(141)(141)100%
QTORIN rapamycin for cutaneous VM296296100%
QTORIN rapamycin CMC1,60187872382%
Non-program specific and unallocated research and development expenses:
Salaries and stock-based compensation2,8102,38342718%
Consultants1,0401,229(189)-15%
Other61645715935%
Total research and development expenses$8,151$8,793$(642)-7%

Research and development expenses for the year ended December 31, 2024 were $8.2 million compared to $8.8 million for the year ended December 31, 2023. The decrease in research and development expenses during the year ended December 31, 2024 was primarily due to decreased expenses incurred related to the clinical development of QTORIN rapamycin for the treatment of Pachyonychia Congenita (“PC”) and for the prevention of Basal Cell Carcinomas in Gorlin Syndrome (“GS”) following the discontinuation of these programs in 2023, offset partially by increased spending on the clinical development of QTORIN rapamycin for the treatment of microcystic LMs,

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including the planning and initiation of our Phase 3 trial, SELVA (PALV-09) which was initiated in the third quarter of 2024, as well as increased CMC costs across all programs.

General and Administrative Expenses

For the year ended December 31, 2024, general and administrative expenses were $5.9 million, compared to $3.1 million for the year ended December 31, 2023. The increase in general and administrative expenses during the year ended December 31, 2024, as compared to the year ended December 31, 2023 is attributable to increased employee compensation expense due to headcount, as well as increased professional services as a result of the Merger and operating as a publicly-traded company.

Total Other (Expense) Income

Total other (expense) income, net for the year ended December 31, 2024 was $3.3 million of expense, as compared to $30.6 million of income for the year ended December 31, 2023. The significant components of other (expense) income are more fully described below.

Interest (expense) income – royalty agreement

During the year ended December 31, 2024, we recorded interest expense of approximately $3.9 million, compared to interest income of approximately $6.3 million for the year ended December 31, 2023, related to the change in fair value of our royalty agreement liability. During 2023, the Company received data from certain of its clinical trials that reduced the projected net product sales related to QTORIN rapamycin and the corresponding probabilities of successful commercialization, resulting in a significant reduction in the expected future royalty payments and a corresponding reduction in the royalty agreement liability.

Interest expense - convertible notes payable

During the year ended December 31, 2024, we recorded interest expense of approximately $0.4 million related to the Convertible Notes, which were issued during the year ended December 31, 2024. No such expense was incurred during 2023. As more fully described in Note 7 of the accompanying notes to the consolidated financial statements contained elsewhere in this Annual Report on Form 10-K, upon the closing of the PIPE Financing, the entire outstanding principal amount and unpaid accrued interest on the Convertible Notes automatically converted into our common stock (or prefunded warrants to purchase common stock). Accordingly, no interest expense was incurred subsequent to the Closing Date.

Fair value adjustments on derivative liabilities – royalty agreement

During the year ended December 31, 2024, we recorded a non-cash loss of approximately $0.6 million, compared to a non-cash gain of approximately $0.5 million for the year ended December 31, 2023, related to the change in fair value of our obligation to make future milestone payments under the Amended Ligand Agreement, which was determined to be a derivative liability. During 2023, the Company received data from certain of its clinical trials that reduced the probabilities of successful commercialization and a corresponding reduction in the derivative liability.

Fair value adjustments on convertible notes payable

During the year ended December 31, 2024, we recorded $1.1 million of non-cash income from fair value adjustments on the Convertible Notes, which were issued in 2024 and converted to common stock (or prefunded warrants) upon closing of the PIPE Financing in December 2024.

Fair value adjustments on derivative liabilities – contingent value right liability

During the year ended December 31, 2024, we recorded $2.0 million of non-cash expense related to fair value adjustments related to the CVRs which were issued in 2024 in connection with the Business Combination and determined to be derivative liabilities. On the Closing Date, management concluded that there was no value associated with the CVRs as the likelihood of any payments received in connection with Pieris’ legacy assets was remote. Subsequent to the Closing Date and as of December 31, 2024, a $2.0 million German research and development tax

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credit receivable was recorded by Pieris Pharmaceuticals GmbH resulting in a corresponding increase to the contingent value rights liability.

Gain on extinguishment – royalty agreement

During the year ended December 31, 2023, we amended the Original Ligand Agreement, which was determined to represent a debt extinguishment under ASC 470, Debt, as the present value of the cash flows under the Amended Ligand Agreement differed by more than 10% from the present value of the cash flows under the Original Ligand Agreement. This resulted in a one-time, non-cash gain on extinguishment of approximately $23.1 million being recorded related to the difference between the carrying value of the liability and its estimated fair value on the date of amendment. No such gains or losses were incurred in 2024.

Other income – German R&D tax credit receivable

During the year ended December 31, 2024, we recorded $2.0 million of income related to a German research and development tax credit receivable recorded by Pieris Pharmaceuticals GmbH at December 31, 2024.

Net Loss Applicable to Common Stockholders

As a result of the factors discussed above, our net loss applicable to common stockholders for the years ended December 31, 2024 and 2023 was $17.4 million and $17.9 million, respectively.

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Liquidity and Capital Resources

Sources of Liquidity

Since inception, we have incurred substantial losses, and have primarily funded our operations with proceeds from the Ligand Agreements and the sale of debt and equity securities, including common stock, convertible preferred stock and convertible notes. During the year ended December 31, 2024, we incurred a net loss of $17.4 million and reported net cash used in operating activities of $10.8 million. As of December 31, 2024, we had an accumulated deficit of $93.7 million and cash and cash equivalents of $83.6 million. Our primary use of cash is to fund operating expenses, which consist primarily of research and development expenditures, and, to a lesser extent, general and administrative expenditures.

We do not expect to generate commercial revenue or operating cash flows for at least the next several years. Our ability to continue as a going concern in the near term is largely dependent on our existing cash balance and our ability to obtain additional sources of financing in order to fund operating expenses, complete development of our product candidates, obtain regulatory approvals, launch, and commercialize our product candidates, and continue research and development programs.

Future Funding Requirements

We have not generated product revenue or achieved profitability since our inception and expect to continue to incur net losses for the foreseeable future. As of December 31, 2024, we had approximately $83.6 million in cash and cash equivalents. Based on our current business plans, we believe that our existing cash and cash equivalents will be sufficient to fund our planned operations for at least the one year period following the date of the filing of this Form 10-K. Moreover, we expect our losses to increase as we continue to advance our product candidates through clinical trials and regulatory submissions. We may also incur expenses in connection with the in-licensing or acquisition of additional product candidates, which may not be currently contemplated in our planned operations. Furthermore, following the closing of the Merger, we expect to incur additional costs associated with operating as a public company, including significant legal, accounting, investor relations and other expenses that we did not incur as a private company. Our primary uses of capital have been, and we expect will continue to be, compensation and related expenses, third-party clinical research, manufacturing and development services, license payments or milestone obligations that may arise, manufacturing costs, legal and other regulatory expenses and general overhead costs.

Based upon our current operating plan, we believe that our cash and cash equivalents on hand as of December 31, 2024 will be sufficient to fund our operating expenses into the second half of 2027. To continue to finance our operations beyond that point, we may need to raise additional capital, the success of which cannot be assured. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we currently expect. If we receive regulatory approval for QTORIN rapamycin for the treatment of microcystic LM, or any of our future product candidates, we expect to incur significant commercialization expenses related to manufacturing, sales, marketing, and distribution, or from any out-licensing of the product. We are also responsible for up to $5.0 million in milestone payments to Ligand under the Amended Ligand Agreement upon the achievement of certain regulatory milestones by us related to QTORIN rapamycin, which may be triggered prior to the commercialization of any of our product candidates and ability to generate revenue.

To the extent that we raise additional capital by issuing equity securities, our existing stockholders may experience substantial dilution, and the terms of these securities may include liquidation or other preferences detrimental to the rights of our common stockholders. Any agreements for future debt or preferred equity financings, if available, may involve covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may be required to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates, or grant licenses on terms that may not be favorable to us. We may seek additional capital due to favorable market conditions or strategic considerations even if we believe we has sufficient funds for our current or future operating plans.

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Our future funding requirements depend on many factors, including, but not limited to:


timing and outcome of regulatory review for QTORIN rapamycin for the treatment of microcystic LM, or our other product candidates;


the cost of commercialization and manufacturing activities with respect to QTORIN rapamycin and our ability to successfully commercialize this product candidate, if approved;


the scope, progress, results and costs of researching and developing QTORIN rapamycin, or any future product candidates, and conducting preclinical studies and clinical trials;


the number and scope of clinical programs we decide to pursue;


the cost of manufacturing our product candidates and any products we commercialize, including costs associated with developing our supply chain;


the cost of commercialization activities if any of our product candidates are approved for sale, including marketing, sales and distribution costs;


our ability to establish and maintain strategic collaborations, licensing or other arrangements and the financial terms of any such agreements that we may enter into;


the timing and sales of any future approved products, if any;


the potential size of the markets for our approved products, if any;


the timing and amount of milestone or royalty payments due under the Ligand Agreements or under similar arrangements with any future collaboration or licensing partners;


the expenses needed to attract and retain skilled personnel;


Our need to implement additional internal systems and infrastructure, including financial and reporting systems, and other costs associated with being a public company; and


the costs involved in preparing, filing, prosecuting, maintaining, defending and enforcing our intellectual property portfolio.

Further, our development and commercialization operating plans may change, and we may need additional funds to meet operational needs and capital requirements for clinical trials and other research and development activities and commercialization of QTORIN rapamycin, if approved. Because of the numerous risks and uncertainties associated with the development and commercialization of our product candidates, we may be unable to estimate the amounts of increased capital outlays and operating expenditures associated with our current and anticipated product development programs.

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Cash Flows

The following table summarizes our cash flows for the years ended December 31, 2024 and 2023 (in thousands):

Year Ended December 31,
20242023
Net cash used in operating activities$(10,840)$(13,703)
Net cash provided by financing activities87,0895,000
Effect of exchange rate change on cash and cash equivalents3
Net increase (decrease) in cash and cash equivalents$76,252$(8,703)

Net cash used in operating activities

Net cash used in operating activities for the years ended December 31, 2024 and December 31, 2023 consisted of net (loss) income for the period adjusted for non-cash items and changes in components of operating assets and liabilities. The primary use of cash was to fund our operations related to the development of our product candidates, including general and administrative support, which decreased due to lower research and development efforts in 2024 as well as the timing of payments and increase in accounts payable.

Net cash provided by financing activities

For the years ended December 31, 2024 and December 31, 2023, net cash provided by financing activities was $87.1 million and $5.0 million, respectively. For the year ended December 31, 2024, cash flows from financing activities was primarily attributable to $13.8 million of cash acquired in connection with the Business Combination, $60.0 million in gross proceeds from the PIPE Financing, and $18.4 million in gross proceeds from the issuance of the Convertible Notes, partially offset by payment of transaction costs in connection with Business Combination of $2.5 million, payments of transaction costs associated with PIPE Financing of $2.5 million, and payments of transaction costs to issue the Convertible Notes of $0.1 million. For the year ended December 31, 2023 cash flows from financing activities consisted of $5.0 million in proceeds from the Amended Ligand Agreement.

Contractual Obligations and Commitments

Leases

We lease office space in Wayne, Pennsylvania. Our future lease payments for these facilities is $0.1 million for the remaining term, which automatically renewed in October 2024.

Ligand Agreement

In December 2018, we entered into the Original Ligand Agreement with Ligand, whereby Ligand agreed to make a one-time payment of $10.0 million to fund the development of QTORIN rapamycin. As partial consideration for the one-time payment, we granted Ligand the right to receive up to $8.0 million in milestone payments upon the achievement of certain corporate, financing and regulatory milestones by us related to QTORIN rapamycin for the treatment of any and all indications. The total amount of potential future milestone payments remaining under the arrangement were $5.0 million as of December 31, 2024. In addition, we agreed to pay to Ligand tiered royalties from 5.0% to 9.8% based on any aggregate annual worldwide net product sales of any products based on QTORIN rapamycin. On a licensed product-by-licensed product and country-by-country basis, the royalty period is from the date of first commercial sale of such licensed product in a country until the latest of (i) the expiration of the last valid claim within the licensed patent rights covering such licensed product in the country in which such licensed product is made, used or sold, (ii) the expiration of the regulatory exclusivity term conferred by the applicable regulatory authority in such country with respect to such licensed product, and (iii) the fifteenth anniversary of the first commercial sale of such licensed product in such country.

In November 2023, we and Ligand entered into the Amended Ligand Agreement, whereby Ligand paid us an additional $5.0 million in return for an increase in the future tiered royalties to 8.0% to 9.8% of any aggregate annual worldwide net product sales of any products based on QTORIN rapamycin.

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Other

Further, we enter into contracts in the normal course of business with service providers for clinical trials, preclinical research studies and testing, manufacturing, and other services and products for operating purposes. Our payment obligations under these contracts generally provide for termination upon notice and, therefore, we believe that our non-cancelable obligations under these agreements are not material and we cannot reasonably estimate the timing of any such payments or if and when they will occur.

We may also enter into additional research, manufacturing, supplier and other agreements in the future, which may require up-front payments or long-term commitments of cash.

Critical Accounting Policies and Significant Judgments and Estimates

Management’s discussion and analysis of our financial condition and results of operations is based on the audited consolidated financial statements included elsewhere in this Form 10-K, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported expenses incurred during the reporting periods. Our estimates are based on our historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Our actual results may differ from these estimates under different assumptions or conditions.

While our significant accounting policies are more fully described in the notes to the audited consolidated financial statements included elsewhere in this Form 10-K, we believe that the accounting policies discussed below are critical to understanding our historical and future performance, as these policies relate to the more significant areas involving management’s judgments and estimates.

Research and Development Expenses and Accruals

We estimate costs of research and development activities conducted by service providers, which include, the conduct of sponsored research, preclinical studies and contract manufacturing activities. We record the estimated costs of research and development activities based upon the estimated amount of services provided but not yet invoiced and include these costs in accrued expenses and other current liabilities or prepaid expenses and other current assets on the balance sheets and within research and development expense on the statements of operations.

We estimate these costs based on factors such as estimates of the work completed and budget provided and in accordance with agreements established with our collaboration partners and third-party service providers. As actual costs become known, we adjust accrued liabilities or prepaid expenses. While our actual results could differ from their estimates, we have not experienced any material differences between accrued costs and actual costs incurred since our inception.

Our expenses related to clinical trials are based on estimates of patient enrollment and related expenses at clinical trial investigator sites as well as estimates for the services received and efforts expended pursuant to contracts with multiple research institutions that may be used to conduct and manage clinical trials on our behalf. We generally accrue expenses related to clinical trials based on contracted amounts applied to the level of patient enrollment and activity. If timelines or contracts are modified based upon changes in the clinical trial protocol or scope of work to be performed, we modify estimates of accrued expenses accordingly on a prospective basis.

Ligand Agreement

Under the terms of the Amended Ligand Agreement, we received $15.0 million to fund the development of QTORIN rapamycin, in exchange for Ligand’s right to receive future payments based on the development and commercialization of products covered under the Amended Ligand Agreement. Ligand is entitled to receive up to an additional $5.0 million of milestone payments upon the achievement of certain regulatory milestones by us related to QTORIN rapamycin for the treatment of any and all indications. Our obligation to make milestone payments under

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the Amended Ligand Agreement was determined to be a derivative liability, and our obligation to make future royalty payments was determined to be a debt instrument.

The accounting for liabilities under the Amended Ligand Agreement requires us to make certain estimates and assumptions about the timing and probability of FDA approval and commercialization, and the amount of future net sales for any product containing QTORIN rapamycin. The estimated future net sales are based on subjective assumptions that include the estimated size of the addressable patient population and the anticipated pricing of the Company’s products. These assumptions are subject to significant variability, and are thus subject to significant uncertainty.

Royalty payments will be recorded as debt service payments on the royalty agreement liability. Interest expense is determined using the effective interest method based upon risk adjusted cash flow estimates of our expected future royalty payments, yielding an effective interest rate of 39.9% and 38.9% as of December 31, 2024 and 2023, respectively. The effective interest rate is estimated at each balance sheet date based on the rate that would enable the liability to be repaid in full over the anticipated life of the arrangement. This effective interest rate will likely be subject to variability as we continue the development and commercialization of our products. The derivative liabilities — royalty agreement is classified as long term on our balance sheet according to the estimated timing of the occurrence of potential payments.

The fair value of the derivative liabilities — royalty agreement with respect to the potential milestone payments is determined based upon the estimated probabilities and timing of the achievement of milestones, discounted to present value using our estimated weighted average cost of capital. The assumptions used to determine the fair value of the derivative liabilities — royalty agreement at December 31, 2024 and 2023 were (a) weighted cost of capital of 20% and 25%; and (b) 56.6% and 50.0% probability of achieving regulatory approval of a product by the FDA with a term of 2.5 and 3.5 years, respectively. Gains and losses arising from changes in fair value of the derivative liabilities — royalty agreement are recognized within our statements of operations as fair value adjustments on the derivative liabilities — royalty agreement and in the balance sheet as a non-current liability for each financial reporting period.

Our estimates and assumptions with respect to the royalty agreement liability and derivative liabilities — royalty agreement are likely to change as we develop and commercialize QTORIN rapamycin, if approved. Any such adjustments that may become necessary will impact the recorded value of the royalty agreement liability and the derivative liabilities — royalty agreement, the accretion of interest expense on the royalty agreement liability and the fair value adjustments on derivative liabilities — royalty agreement.

CVR Agreement

Under the terms of the CVR Agreement, legacy Pieris stockholder’s have the right to receive payments upon the receipt of payments by the us or any of our affiliates under certain strategic partner agreements, including existing collaboration agreements pursuant to which we may be entitled to milestones and royalties in the future and other out-licensing agreements for certain of Pieris’s legacy assets, and upon the receipt of certain research and development tax credits in favor of us or any of its affiliates, in each case as set forth in, and subject to and in accordance with the terms and conditions of, the CVR Agreement.

Management concluded that the CVRs meet the definition of a derivative and will be initially measured at the aggregate estimated fair value of the CVRs and will be subsequently remeasured at estimated fair value on a recurring basis at each reporting period date. Changes in fair value of the CVR derivative are presented in the consolidated statements of operations and comprehensive income (loss). To determine the derivative value at each reporting period, management applies a scenario-based method and weighs them based on the possible likelihood of certain contingencies triggering payments due under the CVR for the liability recognized. The fair value measurements are based on significant inputs not observable in the market, such as estimated cash flows, estimated probabilities of success, and risk-adjustment discount rates, and thus represent a Level 3 measurement as defined in ASC 820, Fair Value Measurement. The estimated value of the CVR is based upon available information and certain assumptions, which our management believes are reasonable under the circumstances.

As of the Closing Date, management concluded that there was no value associated with the CVRs as the likelihood of any payments received in connection with Pieris’ legacy assets was remote. As of December 31, 2024, management

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recorded a contingent rights value liability of approximately $2.0 million due to a receivable for research and development tax credits by Pieris Pharmaceuticals GmbH at December 31, 2024.

Stock-Based Compensation

We account for stock-based compensation in accordance with ASC Topic 718, Compensation – Stock Compensation (“ASC 718”). ASC 718 requires all stock-based payments, including grants of stock options and restricted stock, to be recognized in the consolidated statements of operations based on their fair values. All of the stock-based awards are subject only to service-based vesting conditions. Management estimates the fair value of the stock option awards using the Black-Scholes option pricing model, which requires the input of assumptions, including (a) the fair value of the Company’s common stock, (b) the expected stock price volatility, (c) the calculation of expected term of the award, (d) the risk-free interest rate and (e) expected dividends. Management estimates the fair value of the restricted stock awards using the fair value of the Company’s common stock. Forfeitures are recognized as they are incurred.

Prior to the Merger, we periodically estimated the fair value of the our common stock considering, among other things, valuations of its common stock prepared by management with the assistance of a third-party valuation firm in accordance with the guidance provided by the American Institute of Certified Public Accountants 2013 Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation.

Following the Merger, the fair value of our common stock is based on the closing stock price on the date of grant as reported on the Nasdaq Global Market. The expected life of the stock options in years is estimated using the “simplified method,” as prescribed in SEC’s Staff Accounting Bulletin (SAB) No. 107, as the Company has no historical information from which to develop reasonable expectations about future exercise patterns and post-vesting employment termination behavior for its stock option grants. The simplified method is the midpoint between the vesting period and the contractual term of the option. For stock price volatility, we use comparable public companies as a basis for its expected volatility to calculate the fair value of option grants. The risk-free rate is based on the U.S. Treasury yield curve commensurate with the expected life of the option. The expected dividend yield is zero as the Company has no history of paying dividends and no plans to do so in the near term. We classify stock-based compensation expense in our consolidated statement of operations and comprehensive (loss) income in the same manner of the award recipient’s payroll costs.

Recently Adopted Accounting Pronouncements

Refer to Note 2, “Summary of Significant Accounting Policies,” of the notes to our audited consolidated financial statements appearing elsewhere in this Form 10-K for a discussion of recent accounting pronouncements.

Off-Balance Sheet Arrangements

During the periods presented, we did not have, nor do we currently have, any off-balance sheet arrangements as defined in the rules and regulations of the SEC.

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FY 2023 10-K MD&A

SEC filing source: 0001437749-24-010123.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Confidence: high. Filing date: 2024-03-29. Report date: 2023-12-31.

Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and the related notes and other financial information included in this Annual Report on Form 10-K. Some of the information contained in this discussion and analysis or set forth elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties as described under the heading “Forward-Looking Statements” elsewhere in this Annual Report on Form 10-K. You should review the disclosure under the heading “Risk Factors” in this Annual Report on Form 10-K for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

Overview

We are a biotechnology company that historically discovered and developed Anticalin® protein-based drugs to target validated disease pathways in unique and transformative ways. Proprietary to us, Anticalin proteins are a novel class of therapeutics validated in the clinic and through partnerships with leading pharmaceutical companies, including Servier, Pfizer (formerly Seagen), and Boston Pharmaceuticals in immuno-oncology, or IO. Our clinical pipeline consists of IO bispecifics in partnership with collaborators, including S095012 (also referred to as PRS-344) targeting PD-L1 and 4-1BB, SGN-BB228 (also referred to as PRS-346) targeting CD228 and 4-1BB, and BOS-342 (also referred to as PRS-342) targeting GPC3 and 4-1BB.

On March 27, 2024, we announced an update on our review of strategic alternatives, and our decision to implement measures that are expected to extend our cash runway into at least 2027, while maximizing our ability to collect potential milestones from our clinical pipeline of partnered drug candidates, potentially obtain value for cinrebafusp alfa and other proprietary platform capabilities, and explore other strategic opportunities. As part of this strategy, we intend to discontinue all of our research and development efforts that we expect will be completed by the middle of 2024, reduce our workforce, which is expected to affect additional employees and the executive leadership and be implemented in the second quarter of 2024, and reduce the size of our Board of Directors, which is also expected to be implemented in the second quarter of 2024. We remain eligible to receive potential contingent milestone and royalty payments from its partnered 4-1BB bispecific Mabcalin protein franchise from Pfizer, Boston Pharmaceuticals, and Servier. These include aggregated milestones of approximately $20 million in connection with dosing a first patient in the phase 2 trials for SGN-BB228, S095102, and BOS-342, and aggregated milestones of approximately $55 million in connection with dosing a first patient in the pivotal clinical trials for SGN-BB228, S095102, and BOS-342. Our strategy announced in March 2024 follows from our July 2023 announcement where we stated our intention to explore one or more strategic transactions with the assistance of our advisors, Stifel, Nicolaus & Company, and also announced a reduction in our workforce by approximately 70% in light of decision to reduce our operating footprint and expenses by opting out of and terminating programs.

Discovery and Development Programs

We currently have several IO drug candidates, both proprietary and partnered with major biopharmaceutical companies and are at varying stages of development:

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Column 1Column 2Column 3
Our IO partnered portfolio includes the following drug candidates that are multi-specific Anticalin-based fusion protein drug candidates designed to engage immunomodulatory targets, in partnership with Pfizer (formerly Seagen), Boston Pharmaceutics, and Servier.
Column 1Column 2Column 3
In the Pfizer collaboration, SGN-BB228 (also referenced as PRS-346), a CD228 x 4-1BB bispecific antibody-Anticalin compound, was previously handed over to Pfizer, which is responsible for further advancement and funding of the asset. In January 2023, the first patient was dosed in a Pfizer-sponsored phase 1 study of SGN-BB228, upon which we achieved a $5.0 million milestone. Pfizer, as they were referred to at the time, presented preclinical data for this program at the Society for Immunotherapy of Cancer 37th Annual Meeting in November 2022 and at the American Association for Cancer Research (AACR) Annual Meeting in April 2023, Pfizer presented the study design of the phase 1 study of SGN-BB228 at the American Society of Clinical Oncology (ASCO) Annual Meeting in June 2023. The program is one of three programs in the Pfizer alliance, and we believe the previous achievement of a key development milestone for this program validates our approach in IO bispecifics, complementing the encouraging clinical data seen with cinrebafusp alfa. We transferred the second and third programs to Pfizer at the end of 2023, and retain a co-promotion option for one program in the Pfizer collaboration in the United States.
Column 1Column 2Column 3
BOS-342 (also referenced as PRS-342) is a GPC3 x 4-1BB bispecific Mabcalin compound that we have exclusively licensed to Boston Pharmaceuticals. In August 2023, the first patient was dosed in a Boston Pharmaceuticals sponsored phase 1/2 study of BOS-342 in hepatocellular carcinoma (HCC), for which we received a $2.5 million milestone payment and are entitled to receive up to approximately $350 million in potential development, regulatory and sales-based milestone payments, and tiered royalties on potential sales of BOS-342.
Column 1Column 2Column 3
S095012 (also referenced as PRS-344) is a bispecific Mabcalin compound comprising a PD-L1-targeting antibody genetically linked to 4-1BB-targeting Anticalin proteins being developed by Servier on a worldwide basis. The first-in-human phase 1/2 multicenter open-label dose escalation study is designed to determine the safety and preliminary activity of S095012 in patients with advanced and/or metastatic solid tumors. In July 2023, we notified Servier that we were opting out of co-development and commercialization of S095012 in the U.S. Servier retains exclusive, even as to us, worldwide rights to the program including the right to advance development and potential commercialization in the U.S. As a result of our election to opt out, we are entitled to increased royalty rates and potential royalties and milestones, if any, for S095012.
Column 1Column 2
In May 2021, we also entered into a multi-program research collaboration and license agreement with Genentech, a member of the Roche Group, to discover, develop and commercialize locally delivered respiratory and ophthalmology therapies. In April and May 2023, the ophthalmology and respiratory programs were jointly discontinued, respectively.

Cinrebafusp alfa is a bispecific Mabcalin compound comprising a HER2-targeting antibody genetically linked to 4-1BB-targeting Anticalin proteins. Cinrebafusp alfa is designed to drive tumor localized T cell activation through tumor-targeted drug clustering mediated by HER2 expressed on tumor cells. This program was the first 4-1BB bispecific T cell co-stimulatory agonist to enter clinical development.

Column 1Column 2Column 3
In July 2022, we received fast track designation from FDA for cinrebafusp alfa. In August 2022, we announced the decision to cease further enrollment in the two-arm, multicenter, open-label phase 2 study of cinrebafusp alfa as part of a strategic pipeline prioritization to focus our resources. Cinrebafusp alfa has demonstrated clinical benefit in phase 1 studies, including single agent activity in a monotherapy setting, and in the phase 2 study in HER2-expressing gastric cancer, giving the Company confidence in its broader 4-1BB franchise. In April 2023, clinical data showing an unconfirmed 100% objective response rate and promising emerging durability profile were presented at the American Association of Cancer Research annual meeting. This data provided encouraging evidence of clinical activity for this program. The Company continues to remain committed to obtaining value for cinrebafusp alfa.

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Our former drug candidates include:

Column 1Column 2
Elarekibep, a former respiratory program that was partnered with AstraZeneca for the treatment of asthma, was a drug candidate that antagonizes IL-4Rα, thereby inhibiting the downstream action of IL-4 and IL-13, two cytokines known to be key mediators in the inflammatory cascade that drive the pathogenesis of asthma and other inflammatory diseases.
Column 1Column 2Column 3
In June 2023, AstraZeneca communicated to us its decision to discontinue and cease dosing in the phase 2 clinical studies of elarekibep. This decision was based on lung findings from a non-clinical 13-week GLP toxicology study with dry powder inhaler-formulated elarekibep, which did not support long-term use and progression to later-stage development. The 13-week non-human primate study included three active dose cohorts. AstraZeneca concluded that there were no clinical observations across any of the doses but that there were respiratory tract pathology findings. These findings included inflammation-mediated lung tissue damage, which did not appear to be dose related. AstraZeneca’s decision was made independent of any data from the phase 2a study.
Column 1Column 2Column 3
In July 2023, AstraZeneca notified us of its intention to terminate the AstraZeneca Collaboration Agreement and the AstraZeneca Platform License, which terminations became effective October 15, 2023. AstraZeneca’s decision to terminate these agreements was based on the non-clinical safety findings in a 13-week toxicology study of elarekibep in non-human primates previously disclosed by us. Based upon our review, we have determined to discontinue the program for scientific reasons.
Column 1Column 2Column 3
PRS-220 is an orally inhaled Anticalin protein targeting connective tissue growth factor, or CTGF, that was being developed as a local treatment for idiopathic pulmonary fibrosis, or IPF, and other forms of fibrotic lung diseases. CTGF, a matricellular protein, has been demonstrated to be a driver of fibrotic tissue remodeling and the protein has been found over-expressed in lung tissue from patients suffering from IPF.
Column 1Column 2Column 3
In 2021, we received a €14.2 million grant from the Bavarian Ministry of Economic Affairs, Regional Development and Energy supporting research and development of the PRS-220 program. We conducted a phase 1 study of PRS-220 in healthy volunteers in Australia, which we completed in August 2023. The study was a randomized, two-part, blinded, placebo-controlled study, designed to assess the safety, tolerability, pharmacokinetics, and immunogenicity of single and multiple ascending doses of PRS-220 when administered by oral inhalation to healthy subjects. The clinical study report was finalized at the end of December 2023. Data from the single and multiple ascending doses of PRS-220, when administered by oral inhalation to healthy subjects, demonstrated that PRS-220 was safe and generally well tolerated by subjects in this study at all administered doses. With the completion of the phase 1 clinical studies, we have decided to discontinue further development of the program for strategic and scientific reasons.

Since inception, we have devoted nearly all of our efforts and resources to our research and development activities and have incurred significant net losses. For the years ended December 31, 2023 and 2022, we reported net losses of $24.5 million and $33.3 million, respectively. As of December 31, 2023, we had an accumulated deficit of $315.0 million. We expect to continue incurring substantial losses as we devote time and resources into exploring strategic transactions. Our operating expenses have historically been comprised of research and development expenses and general and administrative expenses.

We have not generated any revenues from product sales to date, and we do not expect to generate revenues from product sales for the foreseeable future. Our revenues for the fiscal years ended December 31, 2023 and 2022 were from license and collaboration agreements with our partners.

A significant portion of our operations are conducted in countries other than the United States. Since we conduct our business in U.S. dollars, our main exposure, if any, results from changes in the exchange rates between the euro and the U.S. dollar. At each period end, we remeasure assets and liabilities to the functional currency of that entity (for example, U.S. dollar payables recorded by our subsidiary, Pieris Pharmaceuticals GmbH). Remeasurement gains and losses are recorded in the statement of operations line item ‘Other income (expense), net’. All assets and liabilities denominated in euros are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenues and expenses are translated at the weighted average rate during the period. Equity transactions are translated using historical exchange rates. All adjustments resulting from translating foreign currency financial statements into U.S. dollars are included in accumulated other comprehensive income (loss).

Key Financial Terms and Metrics

The following discussion summarizes the key factors our management believes are necessary for an understanding of our consolidated financial statements.

Revenues

We have not generated any revenues from product sales to date and we do not expect to generate revenues from product sales for the foreseeable future. Our revenues for the last two years have been from the license and collaboration agreements with AstraZeneca, Servier, Pfizer, Genentech and Boston Pharmaceuticals.

The revenues from AstraZeneca, Servier, Pfizer, Genentech and Boston Pharmaceuticals have been comprised primarily of upfront payments, research and development services and milestone payments. For additional information about our revenue recognition policy, see “Note 2-Summary of Significant Accounting Policies”.

Research and Development Expenses

The process of researching and developing drugs for human use is lengthy, unpredictable, and subject to many risks. Historically, we incurred substantial expenses as we continued to develop our clinical and preclinical drug candidates and programs. Also included in research and development costs in 2023 were severance costs associated with the workforce reduction announced in July of that year. In the third quarter of 2023, we had stopped or taken actions to wind down research and development costs related to all proprietary programs. On March 27, 2024, we announced that we would be discontinuing all of our research and development activities. We have no further spending obligations related to our partnered IO programs. We expect research and development costs to be significantly lower than historical amounts.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries, employee benefits, equity compensation, and other personnel-related costs associated with executive, administrative and other support staff. Other significant general and administrative expenses include the costs associated with professional fees for accounting, auditing, insurance costs, consulting and legal services, along with facility and maintenance costs attributable to general and administrative functions. Included in general and administrative costs in 2023 were severance costs associated with the workforce reduction announced in July of that year. On March 27, 2024, we announced a reduction in workforce that would impact additional employees and the executive leadership team and is expected to be implemented in the second quarter of 2024. We expect general and administrative costs to be significantly lower than historical amounts given the leaner organization and elimination of research and development spending going forward.

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Results of Operations

Comparison of Years Ended December 31, 2023 and December 31, 2022

The following table sets forth our revenues and operating expenses for the fiscal years ended December 31, 2023 and 2022 (in thousands):

Years ended December 31,
20232022
Revenues$42,810$25,902
Research and development expenses41,80152,982
General and administrative expenses16,85316,394
Asset impairment13,912
Total operating expenses72,56669,376
Interest income1,851721
Grant income3,6128,173
Other (expense) income , net(250)1,303
Loss before income taxes(24,543)(33,277)
Benefit for income tax
Net loss$(24,543)$(33,277)

Revenues

The following table provides a comparison of revenues for the years ended December 31, 2023 and 2022 (in thousands):

Year Ended December 31,
20232022Increase/(Decrease)
Customer revenue$38,711$25,469$13,242
Collaboration revenue4,0994333,666
Total Revenue$42,810$25,90216,908
Column 1Column 2Column 3
The $13.2 million increase in customer revenue for the year ended December 31, 2023 compared to the year ended December 31, 2022 is driven by the following:
Column 1Column 2Column 3
Revenue for the year ended December 31, 2023 is primarily due to event-driven revenue recognized for the discontinuation of programs or termination of agreements with both the Genentech ($12.5 million) and AstraZeneca ($7.4 million), revenue recognized due to the Pfizer collaboration amendment driving acceleration of program handover ($10.1 million) and the milestone achieved for the Phase 1 first patient dose under the Boston Pharmaceuticals collaboration ($2.5 million) in the year ended December 31, 2023. These increases were partially offset by event-driven revenue recognized in the prior year for the discontinuation of two early-stage programs under the AstraZeneca collaboration ($9.2 million), completion of the performance obligation related to the material right for S095025 (PRS-352) ($4.9 million), milestone revenue recorded under the Pfizer collaboration ($5.0 million) and completion of the performance obligation related to the expiration of the target swap for the second program under the Pfizer collaboration ($1.5 million).
Column 1Column 2Column 3
Collaboration revenue increased by $3.7 million in the year ended December 31, 2023 compared to the year ended December 31, 2022. The increase is primarily due to event-driven revenue recognized upon the opt-out co-development for S095012 (PRS-344) ($4.6 million), offset partially by higher Servier efforts and expenses for S095012 (PRS-344) that are reductions of our portion of revenue for activities managed by us under the Servier collaboration.

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Research and Development Expenses

The following table provides a comparison of the research and development expenses for the years ended December 31, 2023 and 2022 (in thousands):

Year Ended December 31,
20232022Increase/(Decrease)
Immuno-oncology$6,982$13,743$(6,761)
Respiratory11,51112,845(1,334)
Other R&D activities23,30826,394(3,086)
Total$41,801$52,982(11,181)
Column 1Column 2Column 3
The $6.8 million decrease in our immuno-oncology program spending period-over-period is due primarily to a decrease in clinical and manufacturing costs for both cinrebafusp alfa and S095012 (PRS-344) as well as lower professional services and consulting fees for S095012 (PRS-344).
Column 1Column 2Column 3
The $1.3 million decrease for our respiratory program spending period-over-period is due generally to PRS-220 and PRS-400, and the changing stage of development for these programs year-over-year. PRS-220 incurred lower preclinical and manufacturing costs in 2023, which was partially offset by higher clinical and consulting costs as the program moved from pre-clinical stage in 2022 to clinical stage in 2023. PRS-400 incurred higher manufacturing and pre-clinical costs in 2023 as compared to 2022 as we were planning for IND-enabling activities prior to stopping this program in the middle of the year after our strategic announcement in July 2023.
Column 1Column 2Column 3
The $3.1 million decrease in other research and development activities expenses is driven by lower overall personnel costs due to lower headcount, facility, software and travel expenses, all of which was partially offset higher severance costs after the mid-year strategic announcement.

General and Administrative Expenses

General and administrative expenses were $16.9 million for the year ended December 31, 2023 as compared to $16.4 million for the year ended December 31, 2022. The period-over-period increase was driven primarily by severance expense along with higher audit and tax costs recorded in the current period, offset partially by lower salary and related costs (prior to severance costs), lower facilities, software, legal, travel and insurance costs.

Asset Impairment

During the third quarter of 2023, as part of our strategic process for maximizing the value of assets, we committed to a plan to prepare and sell all property and equipment. As a result of this decision, we incurred impairment expenses totaling $13.9 million, of which $1.8 million was related to impairment of our right-of-use asset under the Hallbergmoos Lease for which we and the landlord terminated the lease in December 2023.

Other income (expense), net

Our other income was $5.2 million for the year ended December 31, 2023 as compared to a other expense of  $10.2 million for the year ended December 31, 2022. The decrease year over year was primarily due to lower grant income and unrealized losses. Lower grant income was a result of reaching the threshold for reimbursable costs in 2023. Lower unrealized losses in the current period were due to an overall weakening U.S. dollar on a year to date basis as compared to the prior comparable period. This was partially offset by higher interest income on investment in the current period as a result of higher interest rates.

Liquidity and Capital Resources

On March 27, 2024, we announced an update on our review of strategic alternatives, and our decision to implement measures that are expected to extend our cash runway into at least 2027, while maximizing our ability to collect potential milestones and royalties from our clinical pipeline of partnered drug candidates, potentially obtain value for cinrebafusp alfa and other proprietary platform capabilities, and explore other strategic opportunities. As part of this strategy, we intend to discontinue all of our research and development efforts, reduce our workforce, which is expected to affect additional employees and the executive leadership, and be substantially implemented in the second quarter of 2024, and reduce the size of our Board of Directors. This follows our July 2023 announcement in which we stated our intention to explore one or more strategic transaction, and in which we further announced a reduction in our workforce by approximately 70%.

Through December 31, 2023, we have funded our operations with $553.8 million of cash that has been obtained from the following main sources: $303.0 million from sales of equity; $225.2 million in total upfront and milestone payments received under license and collaboration agreements and $25.6 million from government grants.

As of December 31, 2023, we had a total of $26.4 million in cash, cash equivalents and investments. We have incurred losses in every period since inception including the years ended December 31, 2023 and 2022, respectively, and have a total accumulated deficit of $315.0 million as of December 31, 2023. Net losses and negative cash flows have had, and will continue to have, an adverse effect on our stockholders’ equity and working capital. We expect to continue to incur operating losses for at least the next several years.

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We have historically devoted substantially all of our financial resources and efforts to research and development and general and administrative expenses to support such research and development.

We expect cash necessary to fund operations will continue to decrease significantly in the near term as we have taken measures to preserve cash, including conducting a further workforce reduction which is expected to impact approximately 60% of the remaining employees, discontinuing our research and development projects. and opting out of co-development of PRS-344/S095012 in the U.S..

The following table provides a summary of operating, investing, and financing cash flows for the years ended December 31, 2023 and 2022 respectively (in thousands):

Year Ended December 31,
20232022
Net cash used in operating activities$(53,819)$(59,932)
Net cash provided by (used in) investing activities12,002(21,236)
Net cash provided by financing activities19,7957,214

Net cash used in operating activities for the year ended December 31, 2023 and 2022 was $53.8 million and $59.9 million, respectively. Cash used in operations in the year ended December 31, 2023 is impacted by lower deferred revenue, primarily driven by higher revenue recognized across all of our collaborations, lower lease liability due to lease termination payment, lower accounts payable, and lower accrued expenses. These changes are offset partially by lower accounts receivable and lower overall prepaid and other assets. This compares to the impact of lower deferred revenue, primarily driven by higher revenue recognized for AstraZeneca, Servier and Pfizer out of the deferred balance, lower accounts payable and accrued expenses and higher accounts receivable and prepaid expenses in the prior period.

The change in net cash provided by investing activities for the year ended December 31, 2023 compared to net cash used in investing activities in 2022 is solely attributable to the impact of net investments changes (more maturities in the current period versus more purchases of investments in the comparable prior year period).

Financing activities for the year ended December 31, 2023 and 2022 provided cash of $19.8 million and $7.2 million, respectively. The increase in net cash provided by financing activities is due to an increase in sales under the ATM program.

In August 2021, we established the ATM Program under a sales agreement with Jefferies LLC, pursuant to which we may offer and sell shares of our common stock, from time to time, up to an aggregate amount of gross sales proceeds of $50.0 million. In November 2022, the sales agreement was amended to provide for an increase in the aggregate offering amount, such that under the ATM Program, as amended, we may offer and sell shares of our common stock, from time to time, up to an aggregate amount of gross sales proceeds of $75.0 million. The ATM Program, as amended, is offered under a shelf registration statement on Form S-3 that was filed with and declared effective by the SEC in August 2021. For the year ended December 31, 2023, we sold 24.3 million shares for gross proceeds of $20.3 million under the ATM Program at an average stock price of $0.84 per share. For the year ended December 31, 2022, we sold 2.1 million shares for gross proceeds of $7.2 million under the predecessor ATM program at an average stock price of $3.46.

As of the filing of this Annual Report on Form 10-K, we will be subject to the SEC general instructions of Form S-3 known as the “baby shelf rules.” Under these instructions, the amount of funds we can raise through primary public offerings of securities in any 12-month period using our registration statement on Form S-3 is limited to one-third of the aggregate market value of the shares of our common stock held by non-affiliates. Therefore, we will be limited in the amount of proceeds we are able to raise by selling shares of our common stock using our Form S-3, including under the ATM Program, until such time as our public float exceeds $75 million.

We have historically devoted substantially all of our financial resources and efforts to research and development and general and administrative expenses to support such research and development. We expect cash necessary to fund operations will continue to decrease significantly as we have decided to discontinue all research and development activities and implement a further workforce reduction that will effect additional employees and the executive leadership team and is expected to be implemented in the second quarter of 2024.

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We believe that our currently available funds will be sufficient to fund our remaining limited operations through at least the next 12 months from the issuance of this Annual Report on Form 10-K. As part of our March 27, 2024 strategic update, as discussed above, we decided to implement measures to reduce discretionary expenditures and other fixed or variable personnel costs as we discontinue all remaining research and development obligations and activities, and conduct a further workforce reduction.

Future investments could be reevaluated if we identify and explore any strategic opportunity that our Board of Directors believes will increase stockholder value. Our belief with respect to our ability to fund operations is based on estimates that are subject to these and other risks and uncertainties.

If we seek to raise additional capital to fulfill our operating and capital requirements through public or private equity financings, utilization of our current ATM Program, strategic collaborations, licensing arrangements, government grants and/or the achievement of milestones under our collaborative agreements, there is no assurance that we will be successful in obtaining sufficient funding on terms acceptable to us to fund continuing operations, if at all, and the terms of any future financing may adversely affect the holdings or the rights of our stockholders.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements, as defined under applicable SEC rules.

Critical Accounting Policies and Estimates

The discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP. The preparation of these financial statements requires management to make estimates and judgments that affect reported amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses for the periods presented. Management makes estimates and exercises judgment in revenue recognition, accrued and prepaid clinical trial expenses, share-based payments and income taxes. Judgments must also be made about the disclosure of contingent liabilities, and these estimates and assumptions form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from those estimates and under different assumptions or conditions.

While our significant accounting policies are more fully described in the notes to our consolidated financial statements, we have identified the following accounting policies that we believe require application of management’s most subjective judgments, often requiring the need to make estimates about the effect of matters that are inherently uncertain and may change in subsequent periods. Our actual results could differ from these estimates and such differences could be material.

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Revenue Recognition

Pieris has entered into several licensing agreements with collaboration partners for the development of Anticalin therapeutics against a variety of targets. The terms of these agreements provide for the transfer of multiple goods or services which may include: (i) licenses, or options to obtain licenses, to Pieris’ Anticalin technology and/or specific programs and (ii) research and development activities to be performed on behalf of or with a collaborative partner. Payments to Pieris under these agreements may include upfront fees (which include license and option fees), payments for research and development activities, payments based upon the achievement of certain milestones, and royalties on product sales. There are no performance, cancellation, termination or refund provisions in any of the arrangements that could result in material financial consequences to Pieris.

The Company accounts for revenue recognition pursuant to FASB ASC Topic 606, Revenue Recognition, or ASC 606. The standard requires a company to recognize revenue when it transfers goods or services to customers in an amount that reflects the consideration that the company expects to receive for those goods or services.

Collaborative Arrangements

We consider the nature and contractual terms of an arrangement and assess whether the arrangement involves a joint operating activity pursuant to which we are an active participant and are exposed to significant risks and rewards with respect to the arrangement. If we are an active participant and are exposed to the significant risks and rewards with respect to the arrangement, we account for these arrangements pursuant to ASC 808, Collaborative Arrangements, or ASC 808, and apply a systematic and rational approach to recognize revenue. We classify payments received as revenue and payments made as a reduction of revenue in the period in which they are earned.

Revenue from Contracts with Customers

In accordance with ASC 606, revenue is recognized when a customer obtains control of promised goods or services. The amount of revenue recognized reflects the consideration to which we expect to be entitled in exchange for these goods and services. To achieve this core principle, we apply the following five steps: 1) identify the customer contract; 2) identify the contract’s performance obligations; 3) determine the transaction price; 4) allocate the transaction price to the performance obligations; and 5) recognize revenue when or as a performance obligation is satisfied.

We evaluate all promised goods and services within a customer contract and determine which of such goods and services are separate performance obligations. This evaluation includes an assessment of whether the good or service is capable of being distinct and whether the good or service is separable from other promises in the contract. In assessing whether promised goods or services are distinct, we consider factors such as the stage of development of the underlying intellectual property and the capabilities of the customer to develop the intellectual property on their own or whether the required expertise is readily available.

Licensing arrangements are analyzed to determine whether the promised goods or services, which often include licenses, research and development services and governance committee services, are distinct or whether they must be accounted for as part of a combined performance obligation. If the license is considered not to be distinct, the license would then be combined with other promised goods or services as a combined performance obligation. If we are involved in a governance committee, we assess whether our involvement constitutes a separate performance obligation. When governance committee services are determined to be separate performance obligations, we determine the fair value to be allocated to this promised service.

Certain contracts contain optional and additional items, which are considered marketing offers and are accounted for as separate contracts with the customer if such option is elected by the customer, unless the option provides a material right which would not be provided without entering into the contract.  An option that is considered a material right is accounted for as a separate performance obligation.

The transaction price is determined based on the consideration to which we will be entitled in exchange for transferring goods and services to the customer. A contract may contain variable consideration, including potential payments for both milestone and research and development services. For certain potential milestone payments, we estimate the amount of variable consideration by using the most likely amount method. In making this assessment, we evaluate factors such as the clinical, regulatory, commercial and other risks that must be overcome to achieve the milestone. Each reporting period we re-evaluate the probability of achievement of such variable consideration and any related constraints. We will include variable consideration, without constraint, in the transaction price to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. For potential research and development service payments, we estimate the amount of variable consideration by using the expected value method, including any approved budget updates arising from additional research or development services.

If the contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price among the performance obligations on a relative standalone selling price basis unless a portion of the transaction price is variable and meets the criteria to be allocated entirely to a performance obligation or to a distinct good or service that forms part of a single performance obligation.

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We allocate the transaction price based on the estimated standalone selling price of the underlying performance obligations or in the case of certain variable consideration to one or more performance obligations. We must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. We utilize key assumptions to determine the stand-alone selling price, which may include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs to complete the respective performance obligation. Certain variable consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated to each performance obligation are consistent with the amount we would expect to receive for each performance obligation.

When a performance obligation is satisfied, revenue is recognized for the amount of the transaction price, excluding estimates of variable consideration that are constrained, that is allocated to that performance obligation on a relative standalone selling price basis. Significant management judgment is required in determining the level of effort required under an arrangement and the period over which we are expected to complete its performance obligations under an arrangement.

For performance obligations consisting of licenses and other promises, we utilize judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non- refundable, up-front fees. We evaluate the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition. If the license to our intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, we will recognize revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the customer and the customer is able to use and benefit from the license.

Milestones and Royalties

We aggregate milestones into four categories: (i) research milestones, (ii) development milestones, (iii) commercial milestones, and (iv) sales milestones. Research milestones are typically achieved upon reaching certain success criteria as defined in each agreement related to developing an Anticalin protein against the specified target. Development milestones are typically reached when a compound reaches a defined phase of clinical research or passes such phase or upon gaining regulatory approvals. Commercial milestones are typically achieved when an approved pharmaceutical product reaches the status for commercial sale, including regulatory approval. Sales milestones are certain defined levels of net sales by the licensee, such as when a product first achieves global sales or annual sales of a specified amount.

There is uncertainty that the events to obtain the research and development milestones will be achieved given the nature of clinical development and the stage of our technology. We have thus determined that all research and development milestones will be constrained until it is deemed probable that a significant revenue reversal will not occur. For revenues from research and development milestones, payments will be recognized consistent with the recognition pattern of the performance obligation to which they relate.

For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and for which the license is deemed to be the predominant item to which the royalties relate, we recognize revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). Commercial milestones and sales royalties are determined by sales or usage-based thresholds and will be accounted for under the royalty recognition constraint as constrained variable consideration.

Contract Balances

We recognize a contract asset when we transfer goods or services to a customer before the customer pays consideration or before payment is due, excluding any amounts presented as a receivable (i.e., accounts receivable). A contract asset is an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer. The contract liabilities (i.e., deferred revenue) primarily relate to contracts where we have received payment but have not yet satisfied the related performance obligations.

Contingencies

Accruals are recorded for loss contingencies when it is probable that a liability has been incurred and the amount of the related loss can be reasonably estimated. We evaluate, on a quarterly basis, developments in legal proceedings and other matters that could cause an increase or decrease in the amount of the liability that has been accrued previously. Considering facts known at the time of the assessment, we determine whether potential losses are considered reasonably possible or probable and whether they are estimable. Based upon this assessment, we carry out an evaluation of disclosure requirements and consider possible accruals in the financial statements.

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Research and Development Expense

Research and development costs are charged to expense as incurred in performing research and development activities. Research and development expenses are comprised of costs incurred in performing research and development activities, including salaries and benefits, facilities costs, pre-clinical and clinical costs, contract services, consulting, depreciation and amortization expense, and other related costs. Costs associated with acquired technology, in the form of upfront fees or milestone payments, are charged to research and development expense as incurred.

Income Taxes

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and operating losses and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted statutory tax rates expected to apply to taxable income in the jurisdictions and years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

We evaluate the realizability of our net deferred tax assets, including considering the level of historical operating results and projections of taxable income for the future. We record a full valuation allowance to reduce our net deferred tax assets when it is determined that it is more likely than not that our net deferred tax assets will not be realized.

We recognize, measure, present and disclose in our financial statements any uncertain tax positions that we have taken or expect to take on a tax return. We operate in multiple jurisdictions, both within and outside the United States, and may be subject to audits from various tax authorities. Management’s judgment is required in determining our provision for income taxes, our deferred tax assets and liabilities, liabilities for uncertain tax positions, and any valuation allowance recorded against our net deferred tax assets. We will monitor the extent to which our deferred tax assets may be realized and adjust the valuation allowance accordingly.

Our policy is to classify interest and penalties related to unrecognized tax benefits as income tax expense.

Recently Issued Accounting Pronouncements

We review new accounting standards to determine the expected financial impact, if any, that the adoption of each standard will have. For the recently issued accounting standards that we believe may have an impact on our consolidated financial statements, see “Note 2—Summary of Significant Accounting Policies” in our consolidated financial statements.

Smaller Reporting Company Status

Currently, we qualify as a smaller reporting company.

As a smaller reporting company, we are eligible and have taken advantage of certain exemptions from various reporting requirements that are not available to public reporting companies that do not qualify for this classification, including, but not limited to:

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An opportunity for reduced disclosure obligations regarding executive compensation in our periodic and annual reports, including exemption from the requirement to provide a compensation discussion and analysis describing compensation practices and procedures,
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An opportunity for reduced financial statement disclosure in registration statements and in annual reports on Form 10-K, which only requires two years of audited financial statements rather than the three years of audited financial statements that are required for other public companies,
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An opportunity for reduced audit and other compliance expenses as we are not subject to the requirement to obtain an auditor’s report on internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act of 2002, and
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An opportunity to utilize the non-accelerated filer time-line requirements

For as long as we continue to be a smaller reporting company, we expect that we will take advantage of both the reduced internal control audit requirements and the disclosure obligations available to us as a result of this classification.

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FY 2022 10-K MD&A

SEC filing source: 0001437749-23-008834.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Confidence: high. Filing date: 2023-03-31. Report date: 2022-12-31.

Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and the related notes and other financial information included in this Annual Report on Form 10-K. Some of the information contained in this discussion and analysis or set forth elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties as described under the heading “Forward-Looking Statements” elsewhere in this Annual Report on Form 10-K. You should review the disclosure under the heading “Risk Factors” in this Annual Report on Form 10-K for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

Overview

We are a clinical-stage biotechnology company that discovers and develops Anticalin-based drugs to target validated disease pathways in unique and transformative ways. Our clinical pipeline includes elarekibep, formerly referred to as PRS-060/AZD1402, an inhaled IL-4Rα antagonist Anticalin protein to treat uncontrolled asthma, PRS-220, an inhaled CTGF antagonist to treat IPF and other forms for fibrotic lung disease, an immuno-oncology, or IO, bispecific PRS-344/S095012 targeting PD-L1 and 4-1BB. Proprietary to us, Anticalin proteins are a novel class of therapeutics validated in the clinic and through partnerships with leading pharmaceutical companies. In particular, we have alliances with AstraZeneca and Genentech to treat respiratory diseases, with Genentech also in ophthalmology and with Servier, Seagen, and Boston Pharmaceuticals in IO. Our discovery and development programs are in varying stages and include:

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Elarekibep, our lead respiratory program partnered with AstraZeneca for the treatment of asthma, is a drug candidate that antagonizes IL-4Rα, thereby inhibiting the downstream action of IL-4 and IL-13, two cytokines known to be key mediators in the inflammatory cascade that drive the pathogenesis of asthma and other inflammatory diseases.
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Elarekibep was tested in a nebulized formulation and an IV arm for pharmacokinetic, or PK, assessment in 54 healthy volunteers at nominal dose levels ranging from 0.25 mg to 400 mg in a phase 1 single-ascending dose, or SAD, study. Data from that study were presented at the American Thoracic Society International Conference in May 2019 showing that elarekibep was well-tolerated when given as single inhaled or intravenous doses to healthy volunteers and there was systemic target engagement (as measured by pSTAT6 inhibition). Elarekibep was also tested in a phase 1 multiple-ascending dose, or MAD, study in 30 patients that were randomized to receive delivered doses via nebulizer ranging from 2 mg to 60 mg (5 mg to 150 mg nominal dose) twice daily for nine consecutive days and one final dose on the 10th day, and 12 patients were randomized to receive placebo at the same intervals. We presented interim data from the elarekibep phase 1 MAD study at the European Respiratory Society International Congress in October 2019 and reported that elarekibep was well-tolerated at all doses, led to a statistically significant reduction in FeNO, a validated biomarker for eosinophilic airway inflammation, and showed dose-dependent systemic target engagement in patients with mild asthma and elevated levels of FeNO (≥ 35ppb).
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The phase 2a asthma study is ongoing at multiple sites globally. This phase 2a study is a two-part, multi-center, placebo-controlled clinical study of elarekibep that will evaluate elarekibep at up to three dose levels using a dry powder formulation administered twice daily. In part 1a (1 mg and 3 mg dose safety) of the study, 31 asthma patients, controlled on standard of care (medium dose inhaled corticosteroids, or ICS, with long-acting beta agonists, or LABA), received elarekibep twice daily over four weeks to establish the safety profile and pharmacokinetics of the dry powder formulation of elarekibep. A safety review following completion of part 1a included an evaluation, compared to placebo, of the incidence of adverse events, changes in laboratory markers (immuno-biomarkers, clinical chemistry, and hematology), and forced expiratory volume in one second, or FEV1. Following the safety review, AstraZeneca began enrollment of part 2a (1 mg and 3 mg dose efficacy) of the study to evaluate efficacy, safety, and pharmacokinetics of elarekibep administered twice daily to asthma patients, uncontrolled on medium dose ICS with LABA, that have a blood eosinophil count of ≥ 150 cells/μL and FeNO ≥ 25 ppb in the 1 mg and 3 mg arms and a placebo arm. Following a four-week run-in period, patients will be dosed and monitored over four weeks. FEV1 improvement at four weeks compared to placebo will be the primary endpoint in this portion of the study. Also following the safety review, AstraZeneca initiated part 1b of the study to evaluate the safety of the 10 mg dose in asthma patients controlled on standard of care who will receive elarekibep twice daily over four weeks, and part 1b has now completed enrollment. In the second quarter of 2022, AstraZeneca conducted a reforecast of the study, which has taken into account the global challenges of recruiting for respiratory clinical trials caused by the continued impact of the COVID-19 pandemic, and has broadened enrollment criteria in part 2 (previously referenced as part 2a) of the study to facilitate recruitment of the study. AstraZeneca also now plans to focus part 2 on the 3 mg cohort for the efficacy readout and plans to stop enrollment for the 1 mg cohort. AstraZeneca no longer plans to enroll the 10 mg cohort for the efficacy readout (previously referenced as part 2b). Topline data from part 2 of this study are expected to be reported by the middle of 2024.
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Upon receipt of the topline data and notice from AstraZeneca, including a product development plan and budget, we will have 30 days to opt into co-development of the program with AstraZeneca at one of two levels, neither of which includes an option exercise fee. If we do not choose to participate in co-development, we would still be entitled to sales royalties from single-digit up to the mid-teens, plus the potential for more than $1 billion in sales milestones. At the first opt-in level, we would be responsible for 25% of the cost-share through regulatory approval with a predetermined cost cap. At this level, for the lifetime of this product, we would receive sales royalties from single-digit up to the high teens, plus the potential for multi-billion dollar sales milestones. The second opt-in level would be at a 50% cost share without a cost cap which, instead of sales royalties and milestones, would result in a gross margin share in the mid-twenty percent range for the lifetime of the product. We also have a separate option to co-commercialize elarekibep with AstraZeneca in the United States independent of the co-development opt-in decision.
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There are currently two discovery-stage programs included in the AstraZeneca alliance beyond elarekibep, the targets and disease areas of which are undisclosed. Pieris retains co-development and U.S. co-commercialization options for the two discovery-stage programs.
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Our lead fully proprietary respiratory asset, PRS-220, an oral inhaled Anticalin protein targeting connective tissue growth factor, or CTGF, is being developed as a local treatment for idiopathic pulmonary fibrosis, or IPF, and other forms of fibrotic lung disease. CTGF, a matricellular protein, is a driver of fibrotic tissue remodeling and the protein has been found over-expressed in lung tissue from patients suffering from IPF. Clinical data from a phase 2 study with pamrevlumab conducted by Fibrogen indicated that inhibition of CTGF reduced the decline in lung function in patients, thus demonstrating clinical proof of concept for this target.
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In 2021, we received a €14.2 million grant from the Bavarian Ministry of Economic Affairs, Regional Development and Energy supporting research and development of the PRS-220 program.

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We presented initial preclinical data for PRS-220 at the European Respiratory Society International Congress 2021 demonstrating a more potent and durable target engagement profile compared to a clinical-stage, systemically delivered anti-CTGF antibody benchmark. Additionally, the targeting of CTGF locally in the lung showed increased attenuation of fibrotic lung remodeling in vivo compared to the systemically delivered antibody. This outcome correlates with superior lung tissue exposure of PRS-220 compared to that of the systemically administered antibody in head-to-head studies, where intratracheally administered PRS-220 efficiently penetrates the fibrotic, interstitial lung tissue of mice.
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We are conducting a phase 1 study of PRS-220 in healthy volunteers in Australia. The study is a randomized, two-part, blinded, placebo-controlled study, designed to assess the safety, tolerability, pharmacokinetics, and immunogenicity of single and multiple ascending doses of PRS-220 when administered by oral inhalation to healthy subjects. We expect to report the outcome of the study later this year.
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In May 2021, we also entered into a multi-program research collaboration and license agreement with Genentech, a member of the Roche Group, to discover, develop and commercialize locally delivered respiratory and ophthalmology therapies. We are currently conducting joint discovery activities in each of the two committed programs.
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PRS-400 is a fully proprietary Anticalin protein targeting Jagged-1 and is being developed as a local treatment for muco-obstructive lung diseases. Jagged-1 is one of five cell surface ligands interacting with Notch receptors. It has been demonstrated that Jagged-1/Notch signaling drives secretory cell trans-differentiation in the airways and that blocking Jagged-1/Notch signaling reduces secretory cell number, mucin expression and mucus plugging in vivo. In August 2022, we presented preclinical data at the European Respiratory Society International Congress 2022 indicating that candidate molecules inhibit Jagged-1-induced Notch 2 signaling in a dose-dependent manner and also demonstrate that PRS-400 reduces mucin expression ex vivo. Additionally, PRS-400 was found in vivo to reduce mucin gene expression and goblet cells in mice with IL-13-induced airway inflammation. These findings suggest that PRS-400 represents a promising opportunity to address muco-obstructive respiratory diseases locally with an attractive therapeutic index.
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Cinrebafusp alfa is a bispecific Mabcalin compound comprising a HER2-targeting antibody genetically linked to 4-1BB-targeting Anticalin proteins. Cinrebafusp alfa is designed to drive tumor localized T cell activation through tumor-targeted drug clustering mediated by HER2 expressed on tumor cells. This program was the first 4-1BB bispecific T cell co-stimulatory agonist to enter clinical development.
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In July 2022, we received fast track designation from FDA for cinrebafusp alfa. In August 2022, we announced the decision to cease further enrollment in the two-arm, multicenter, open-label phase 2 study of cinrebafusp alfa as part of a strategic pipeline prioritization to focus our resources. Cinrebafusp alfa has demonstrated clinical benefit in phase 1 studies, including single agent activity in a monotherapy setting, and in the phase 2 study in HER2-expressing gastric cancer, giving the Company confidence in its broader 4-1BB franchise.
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PRS-344/S095012 is a bispecific Mabcalin protein compound comprising a PD-L1-targeting antibody genetically linked to 4-1BB-targeting Anticalin proteins. PRS-344/S095012 is being developed as part of our IO collaboration with Servier.
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The first patient in phase 1/2 study of PRS-344/S095012 was dosed in November 2021 and the study is being conducted in multiple countries, including the United States.
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The first-in-human phase 1/2 multicenter open-label dose escalation study is designed to determine the safety and preliminary activity of PRS-344/S095012 in patients with advanced and/or metastatic solid tumors. We plan to present the escalation data at a medical meeting in 2023.
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Pieris and Servier presented preclinical data and the phase 1/2 study design at the American Association for Cancer Research, or AACR, medical meeting in April 2022.
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We expect to initiate the expansion cohorts in a select number of jointly vetted indications later this year.
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Our IO portfolio also includes additional drug candidates beyond PRS-344/S095012 that are multi-specific Anticalin-based fusion proteins designed to engage immunomodulatory targets, comprising a variety of multifunctional biotherapeutics. Other IO drug candidates are being developed as part of our collaborations with Servier, Seagen, and Boston Pharmaceuticals.
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We have already handed one of the programs in the Seagen collaboration, SGN-BB228 (also referenced as PRS-346), a CD228 x 4-1BB bispecific antibody-Anticalin compound, over to Seagen, who is responsible for further advancement and funding of the asset. In January 2023, the first patient was dosed in a Seagen-sponsored phase 1 study of SGN-BB228, upon which we achieved a $5.0 million milestone. Seagen presented preclinical data for this program at the Society for Immunotherapy of Cancer 37th Annual Meeting in November 2022. The program is one of three programs in the Seagen alliance, and we believe the previous achievement of a key development milestone for this program validates our approach and leadership in IO bispecifics, complementing the encouraging clinical data seen with cinrebafusp alfa. During the third quarter of 2021, we initiated the second program, and during the fourth quarter of 2022, we initiated the third program within the collaboration with Seagen. We retain a co-promotion option for one program in the Seagen collaboration in the United States.
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PRS-342/BOS-342 is a 4-1BB/GPC3 bispecific Mabcalin compound that we have exclusively licensed to Boston Pharmaceuticals. Boston Pharmaceuticals continues to advance PRS-342/BOS-342 towards the clinic, with phase 1 expected in the coming months.

Since inception, we have devoted nearly all of our efforts and resources to our research and development activities and have incurred significant net losses. For the years ended December 31, 2022 and 2021, we reported net losses of $33.3 million and $45.7 million, respectively. As of December 31, 2022, we had an accumulated deficit of $290.4 million. We expect to continue incurring substantial losses for the next several years as we continue to develop our clinical and preclinical drug candidates and programs. Our operating expenses are comprised of research and development expenses and general and administrative expenses.

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We have not generated any revenues from product sales to date, and we do not expect to generate revenues from product sales for the foreseeable future. Our revenues for the fiscal years ended December 31, 2022 and 2021 were from license and collaboration agreements with our partners.

A significant portion of our operations are conducted in countries other than the United States. Since we conduct our business in U.S. dollars, our main exposure, if any, results from changes in the exchange rates between the euro and the U.S. dollar. At each period end, we remeasure assets and liabilities to the functional currency of that entity (for example, U.S. dollar payables recorded by Pieris Pharmaceuticals GmbH). Remeasurement gains and losses are recorded in the statement of operations line item ‘Other income (expense), net’. All assets and liabilities denominated in euros are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenues and expenses are translated at the weighted average rate during the period. Equity transactions are translated using historical exchange rates. All adjustments resulting from translating foreign currency financial statements into U.S. dollars are included in accumulated other comprehensive income (loss).

Key Financial Terms and Metrics

The following discussion summarizes the key factors our management believes are necessary for an understanding of our consolidated financial statements.

Revenues

We have not generated any revenues from product sales to date and we do not expect to generate revenues from product sales for the foreseeable future. Our revenues for the last two years have been from the license and collaboration agreements with AstraZeneca, Servier, Seagen, Genentech and Boston Pharmaceuticals.

The revenues from AstraZeneca, Servier, Seagen, Genentech and Boston Pharmaceuticals have been comprised primarily of upfront payments, research and development services and milestone payments. For additional information about our revenue recognition policy, see “Note 2-Summary of Significant Accounting Policies”.

Research and Development Expenses

The process of researching and developing drugs for human use is lengthy, unpredictable, and subject to many risks. We expect to continue incurring substantial expenses for the next several years as we continue to develop our clinical and preclinical drug candidates and programs. We are unable, with any certainty, to estimate either the costs or the timelines in which those expenses will be incurred. Our current development plans focus on the following programs: our lead respiratory program, elarekibep, our proprietary respiratory programs, PRS-220 and PRS-400, and our partnered IO programs, including PRS-344/S095012. These programs consume a large proportion of our current, as well as projected, resources.

Our research and development costs include costs that are directly attributable to the creation of certain of our Anticalin drug candidates and are comprised of:

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internal recurring costs, such as personnel-related costs (salaries, employee benefits, equity compensation and other costs), materials and supplies, facilities and maintenance costs attributable to research and development functions; and
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fees paid to external parties who provide us with contract services, such as preclinical testing, manufacturing and related testing and clinical trial activities.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries, employee benefits, equity compensation, and other personnel-related costs associated with executive, administrative and other support staff. Other significant general and administrative expenses include the costs associated with professional fees for accounting, auditing, insurance costs, consulting and legal services, along with facility and maintenance costs attributable to general and administrative functions.

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Results of Operations

Comparison of Years Ended December 31, 2022 and December 31, 2021

The following table sets forth our revenues and operating expenses for the fiscal years ended December 31, 2022 and 2021 (in thousands):

Years ended December 31,
20222021
Revenues$25,902$31,418
Research and development expenses52,98266,656
General and administrative expenses16,39416,593
Total operating expenses69,37683,249
Interest income7214
Grant income8,1733,685
Other (expense) income , net1,3032,404
Loss before income taxes(33,277)(45,738)
Benefit for income tax
Net loss$(33,277)$(45,738)

Revenues

The following table provides a comparison of revenues for the years ended December 31, 2022 and 2021 (in thousands):

Year Ended December 31,
20222021Increase/(Decrease)
Customer revenue$25,469$27,940$(2,471)
Collaboration revenue4333,478(3,045)
Total Revenue$25,902$31,418(5,516)
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The $2.5 million decrease in customer revenue for the year ended December 31, 2022 compared to the year ended December 31, 2021 is driven by the following:
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Current year revenue recorded due to the discontinuation of two early-stage programs under the AstraZeneca collaboration (approximately $9.2 million), completion of the performance obligation related to the material right for PRS-352 (approximately $4.9 million), milestone revenue recorded under the Seagen collaboration ($5.0 million) and completion of the performance obligation related to the expiration of the target swap for the second program under the Seagen collaboration (approximately $1.5 million) as well as program progress on the Seagen and Genentech collaborations.
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Prior year revenue was slightly higher and primarily consisted of a phase 2a milestone ($13.0 million) recognized for elarekibep under the AstraZeneca collaboration along with higher reimbursable costs incurred on this program, revenue recognized under the Boston Pharmaceuticals collaboration ($5.7 million) and higher reimbursable costs for phase 1 preparation activities due from Servier. .
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Collaboration revenue decreased by $3.0 million in the year ended December 31, 2022 compared to the year ended December 31, 2021. The decrease relates to an updated estimate of project completion for PRS-344/S095012 under the Servier collaboration, leading to lower revenue recognized in the current period along with increased activities managed by Servier for the phase 1 study which offset our revenue generating activities.

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Research and Development Expenses

The following table provides a comparison of the research and development expenses for the years ended December 31, 2022 and 2021 (in thousands):

Year Ended December 31,
20222021Increase/(Decrease)
Respiratory$12,845$17,158$(4,313)
Immuno-oncology13,74323,210(9,467)
Other R&D activities26,39426,288106
Total$52,982$66,656(13,674)
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The $9.5 million decrease in our immuno-oncology program spending period-over-period is due primarily to a decrease in overall costs for cinrebafusp alfa as the program was stopped during 2022, decreased manufacturing costs for PRS-344/S095012, and lower license fees given transactions that occurred in 2021, partially offset by higher clinical costs for PRS-344/S095012 and slightly higher pre-clinical costs for discovery stage programs.
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The $4.3 million decrease for our respiratory program spending period-over-period is due to lower program costs for elarekibep as there was limited phase 1 clinical activities to complete in 2022 along with some phase 2 manufacturing costs both of which were fully reimbursed by AstraZeneca, lower manufacturing costs for PRS-220, and lower license fees given amendments to the AstraZeneca collaboration that occurred in 2021, all partially offset by higher clinical costs for PRS-220 and higher pre-clinical and consumable costs for PRS-400.
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The $0.1 million increase in other research and development activities expenses is due primarily to higher personnel costs due to higher average headcount along with an increase in travel expenses, both partially offset by lower overall license fees, lower external consulting expenses, and lower general lab supply costs.

General and Administrative Expenses

General and administrative expenses were $16.4 million for the year ended December 31, 2022 as compared to $16.6 million for the year ended December 31, 2021. The slight period-over-period decrease was driven primarily by lower personnel costs, facilities and IT costs, and audit and tax costs, partially offset by higher amortization of deferred costs related to costs to obtain a contract, business development and travel costs.

Other income (expense), net

Our other income was $10.2 million for the year ended December 31, 2022 as compared to a other expense of $6.1 million for the year ended December 31, 2021. This period over period increase was primarily due to a full year of grant income recorded for PRS-220 in the current period as compared to a partial year in the same period in the prior year, interest income on investments in the current year as well as a strengthening US dollar for the majority of the current year, partially offset by higher foreign exchange realized losses in the current year as compared to the same period in the prior year.

Liquidity and Capital Resources

We are subject to risks common to companies in the biotechnology industry, including but not limited to, the need for additional capital, risks of failure of preclinical studies and clinical trials, the need to obtain marketing approval and reimbursement for any drug product candidate that we may identify and develop, the need to successfully commercialize and gain market acceptance of our product candidates, dependence on key personnel, protection of proprietary technology, compliance with government regulations, development of technological innovations by competitors, reliance on third-party manufacturers and the ability to transition from pilot-scale production to large-scale manufacturing of products.

Through December 31, 2022, we have funded our operations with $521.5 million of cash that has been obtained from the following main sources: $283.2 million from sales of equity; $217.7 million in total upfront and milestone payments received under license and collaboration agreements and $20.6 million from government grants.

As of December 31, 2022, we had a total of $59.2 million in cash, cash equivalents and investments. We have incurred losses in every period since inception including the years ended December 31, 2022 and 2021, respectively, and have a total accumulated deficit of $290.4 million as of December 31, 2022. Net losses and negative cash flows have had, and will continue to have, an adverse effect on our stockholders’ equity and working capital. We expect to continue to incur operating losses for at least the next several years.

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The following table provides a summary of operating, investing, and financing cash flows for the years ended December 31, 2022 and 2021 respectively (in thousands):

Year Ended December 31,
20222021
Net cash used in operating activities$(59,932)$(7,660)
Net cash used in investing activities(21,236)(949)
Net cash provided by financing activities7,21459,127

Net cash used in operating activities for the year ended December 31, 2022 and 2021 was $59.9 million and $7.7 million, respectively. Cash used in the current period is impacted by lower deferred revenue, primarily driven by higher revenue recognized for AstraZeneca, Servier and Seagen out of the deferred balance, lower accounts payable and accrued expenses and higher accounts receivable and prepaid expenses. This compares to the impact of higher deferred revenue, primarily driven by the new collaboration agreements with Boston Pharmaceuticals and Genentech and higher accounts payable and accrued expenses, offset partially by higher accounts receivables and prepaid expenses in the prior period.

The change in net cash used in investing activities for the year ended December 31, 2022 compared to net cash used in investing activities in 2021 is solely attributable to the impact of net investments changes (purchase of investments as a result of rising interest rates in 2022) for which there is no activity in the comparable prior year period.

Financing activities for the year ended December 31, 2022 and 2021 provided cash of $7.2 million and $59.1 million, respectively. The decrease in 2022 compared to 2021 is driven by equity investments from both Seagen and AstraZeneca, higher sales activity under our ATM programs and higher proceeds received from warrant and option exercises in the prior period compared to more limited ATM sales activity and warrant and option exercises in 2022 given the overall lower stock price.

In August 2019, we entered into a sales agreement pursuant to which we may offer and sell shares of our common stock, from time to time, up to an aggregate gross sales proceeds of $50.0 million through an “at the market offering” program, or the 2019 ATM Program, under a shelf registration statement on Form S-3 (File No. 333-226725). In August 2021, the 2019 ATM Program expired. In August 2021, we established a second ATM offering program, or the 2021 ATM Program, under the existing sales agreement with Jefferies LLC, pursuant to which the Company may offer and sell shares of its common stock, from time to time, up to an aggregate amount of gross sales proceeds of $50.0 million. In November 2022, the sales agreement was amended to provide for an increase in the aggregate offering amount, such that under the 2021 ATM Program, as amended, the Company may offer and sell shares of its common stock, from time to time, up to an aggregate amount of gross sales proceeds of $75.0 million. The 2021 ATM Program, as amended, is offered under a shelf registration statement on Form S-3 (File No. 333-258497) that was filed with and declared effective by the SEC in August 2021. For the year ended December 31, 2022, we sold 2.1 million shares for gross proceeds of $7.2 million under the ATM program at an average stock price of $3.46. For the year ended December 31, 2021, we sold 8.2 million shares for gross proceeds of $39.7 million under both ATM programs at an average stock price of $4.85.

Our future success is dependent on our ability to identify and develop our product candidates, expand our corporate infrastructure and ultimately upon our ability to attain profitable operations. We have devoted substantially all of our financial resources and efforts to research and development and general and administrative expenses to support such research and development. We have several research and development programs underway in varying stages of development and we expect that these programs will continue to require increasing amounts of cash for development, conducting clinical trials, and testing and manufacturing of product material. Cash necessary to fund operations will increase significantly over the next several years as we continue to conduct these activities necessary to pursue governmental regulatory approval of clinical-stage programs and other product candidates.

Any requirements for additional capital will depend on many factors, including the following:

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the scope, rate of progress, results and cost of our clinical studies, preclinical testing and other related activities;
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the cost of manufacturing clinical supplies, and establishing commercial supplies, of our drug candidates and any products that we may develop;
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the number and characteristics of drug candidates that we pursue;
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the cost, timing and outcomes of regulatory approvals;

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the cost and timing of establishing sales, marketing and distribution capabilities;
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the terms and timing of any collaborative, licensing and other arrangements that we may establish;
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the timing, receipt and amount of sales, profit sharing or royalties, if any, from our potential products;
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the cost of preparing, filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights;
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the extent to which we acquire or invest in businesses, products or technologies, although we currently have no commitments or agreements relating to any of these types of transactions; and
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the effects of the COVID-19 pandemic and the cost and timing of actions taken to contain it.

In addition, any unfavorable development or delay in the progress of our core clinical-stage programs, including elarekibep, could have a material adverse impact on our ability to raise additional capital. We would need to raise additional capital over the next year to continue our current level of research and development activities across all of our active programs, as well as to maintain the general and administrative functions to support such activities. Without access to additional capital or management making decisions to reduce spending, these conditions raise substantial doubt about our ability to continue as a going concern.

We plan to raise additional capital to fulfill our operating and capital requirements through public or private equity financings, utilization of our current “at the market offering” program, or ATM Program, strategic collaborations, licensing arrangements, government grants and/or the achievement of milestones under our collaborative agreements. The funding requirements of our operating plans, however, are based on estimates that are subject to risks and uncertainties and may change as a result of many factors currently unknown. Although management continues to pursue these funding plans, there is no assurance that we will be successful in obtaining sufficient funding on terms acceptable to us to fund continuing operations, if at all. Until such time that we can generate substantial product revenues, if ever, we expect to finance our cash needs through a combination of equity offerings, debt financings, strategic partnerships, licensing arrangements and government grants. The terms of any future financing may adversely affect the holdings or the rights of our existing stockholders.

If we are unable to obtain additional funding on acceptable terms when needed, we will defer or limit a substantial portion of our research, development and clinical projects, reduce discretionary expenditures and other fixed or variable personnel costs to alleviate the substantial doubt as to our ability to continue as a going concern. Our budget and operating plan for 2023, approved by the Board, does not include such discretionary costs, and management is prepared to gate future investments on PRS-220 and PRS-400, including certain Phase 2-readiness activities for PRS-220 and IND-enabling activities for PRS-400, in the interest of achieving our top priority, namely, obtaining data from the elarekibep Phase 2a study in asthma. On the basis of our approved budget and actions within management’s control, we believe that our currently available funds will be sufficient to fund our remaining limited operations through at least the next 12 months from the issuance of this Annual Report on Form 10-K. Our belief with respect to our ability to fund operations is based on estimates that are subject to risks and uncertainties.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements, as defined under applicable SEC rules.

Critical Accounting Policies and Estimates

The discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP. The preparation of these financial statements requires management to make estimates and judgments that affect reported amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses for the periods presented. Management makes estimates and exercises judgment in revenue recognition, accrued and prepaid clinical trial expenses, share-based payments and income taxes. Judgments must also be made about the disclosure of contingent liabilities, and these estimates and assumptions form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from those estimates and under different assumptions or conditions.

While our significant accounting policies are more fully described in the notes to our consolidated financial statements, we have identified the following accounting policies that we believe require application of management’s most subjective judgments, often requiring the need to make estimates about the effect of matters that are inherently uncertain and may change in subsequent periods. Our actual results could differ from these estimates and such differences could be material.

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Revenue Recognition

Pieris has entered into several licensing agreements with collaboration partners for the development of Anticalin therapeutics against a variety of targets. The terms of these agreements provide for the transfer of multiple goods or services which may include: (i) licenses, or options to obtain licenses, to Pieris’ Anticalin technology and/or specific programs and (ii) research and development activities to be performed on behalf of or with a collaborative partner. Payments to Pieris under these agreements may include upfront fees (which include license and option fees), payments for research and development activities, payments based upon the achievement of certain milestones, and royalties on product sales. There are no performance, cancellation, termination or refund provisions in any of the arrangements that could result in material financial consequences to Pieris.

The Company accounts for revenue recognition pursuant to FASB ASC Topic 606, Revenue Recognition, or ASC 606. The standard requires a company to recognize revenue when it transfers goods or services to customers in an amount that reflects the consideration that the company expects to receive for those goods or services.

Collaborative Arrangements

We consider the nature and contractual terms of an arrangement and assess whether the arrangement involves a joint operating activity pursuant to which we are an active participant and are exposed to significant risks and rewards with respect to the arrangement. If we are an active participant and are exposed to the significant risks and rewards with respect to the arrangement, we account for these arrangements pursuant to ASC 808, Collaborative Arrangements, or ASC 808, and apply a systematic and rational approach to recognize revenue. We classify payments received as revenue and payments made as a reduction of revenue in the period in which they are earned.

Revenue from Contracts with Customers

In accordance with ASC 606, revenue is recognized when a customer obtains control of promised goods or services. The amount of revenue recognized reflects the consideration to which we expect to be entitled in exchange for these goods and services. To achieve this core principle, we apply the following five steps: 1) identify the customer contract; 2) identify the contract’s performance obligations; 3) determine the transaction price; 4) allocate the transaction price to the performance obligations; and 5) recognize revenue when or as a performance obligation is satisfied.

We evaluate all promised goods and services within a customer contract and determines which of such goods and services are separate performance obligations. This evaluation includes an assessment of whether the good or service is capable of being distinct and whether the good or service is separable from other promises in the contract.  In assessing whether promised goods or services are distinct, we consider factors such as the stage of development of the underlying intellectual property and the capabilities of the customer to develop the intellectual property on their own or whether the required expertise is readily available.

Licensing arrangements are analyzed to determine whether the promised goods or services, which often include licenses, research and development services and governance committee services, are distinct or whether they must be accounted for as part of a combined performance obligation. If the license is considered not to be distinct, the license would then be combined with other promised goods or services as a combined performance obligation. If we are involved in a governance committee, we assess whether our involvement constitutes a separate performance obligation. When governance committee services are determined to be separate performance obligations, we determine the fair value to be allocated to this promised service.

Certain contracts contain optional and additional items, which are considered marketing offers and are accounted for as separate contracts with the customer if such option is elected by the customer, unless the option provides a material right which would not be provided without entering into the contract.  An option that is considered a material right is accounted for as a separate performance obligation.

The transaction price is determined based on the consideration to which we will be entitled in exchange for transferring goods and services to the customer. A contract may contain variable consideration, including potential payments for both milestone and research and development services. For certain potential milestone payments, we estimate the amount of variable consideration by using the most likely amount method. In making this assessment, we evaluate factors such as the clinical, regulatory, commercial and other risks that must be overcome to achieve the milestone. Each reporting period we re-evaluate the probability of achievement of such variable consideration and any related constraints. We will include variable consideration, without constraint, in the transaction price to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. For potential research and development service payments, we estimate the amount of variable consideration by using the expected value method, including any approved budget updates arising from additional research or development services.

If the contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price among the performance obligations on a relative standalone selling price basis unless a portion of the transaction price is variable and meets the criteria to be allocated entirely to a performance obligation or to a distinct good or service that forms part of a single performance obligation.

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We allocate the transaction price based on the estimated standalone selling price of the underlying performance obligations or in the case of certain variable consideration to one or more performance obligations. We must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. We utilize key assumptions to determine the stand-alone selling price, which may include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs to complete the respective performance obligation. Certain variable consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated to each performance obligation are consistent with the amount we would expect to receive for each performance obligation.

When a performance obligation is satisfied, revenue is recognized for the amount of the transaction price, excluding estimates of variable consideration that are constrained, that is allocated to that performance obligation on a relative standalone selling price basis. Significant management judgment is required in determining the level of effort required under an arrangement and the period over which we are expected to complete its performance obligations under an arrangement.

For performance obligations consisting of licenses and other promises, we utilize judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non- refundable, up-front fees. We evaluate the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition. If the license to our intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, we will recognize revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the customer and the customer is able to use and benefit from the license.

Milestones and Royalties

We aggregate milestones into four categories: (i) research milestones, (ii) development milestones, (iii) commercial milestones, and (iv) sales milestones. Research milestones are typically achieved upon reaching certain success criteria as defined in each agreement related to developing an Anticalin protein against the specified target. Development milestones are typically reached when a compound reaches a defined phase of clinical research or passes such phase or upon gaining regulatory approvals. Commercial milestones are typically achieved when an approved pharmaceutical product reaches the status for commercial sale, including regulatory approval. Sales milestones are certain defined levels of net sales by the licensee, such as when a product first achieves global sales or annual sales of a specified amount.

There is uncertainty that the events to obtain the research and development milestones will be achieved given the nature of clinical development and the stage of our technology. We have thus determined that all research and development milestones will be constrained until it is deemed probable that a significant revenue reversal will not occur. For revenues from research and development milestones, payments will be recognized consistent with the recognition pattern of the performance obligation to which they relate.

For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and for which the license is deemed to be the predominant item to which the royalties relate, we recognize revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). Commercial milestones and sales royalties are determined by sales or usage-based thresholds and will be accounted for under the royalty recognition constraint as constrained variable consideration.

Contract Balances

We recognize a contract asset when we transfer goods or services to a customer before the customer pays consideration or before payment is due, excluding any amounts presented as a receivable (i.e., accounts receivable). A contract asset is an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer. The contract liabilities (i.e., deferred revenue) primarily relate to contracts where we have received payment but has not yet satisfied the related performance obligations.

Contingencies

Accruals are recorded for loss contingencies when it is probable that a liability has been incurred and the amount of the related loss can be reasonably estimated. We evaluate, on a quarterly basis, developments in legal proceedings and other matters that could cause an increase or decrease in the amount of the liability that has been accrued previously. Considering facts known at the time of the assessment, we determine whether potential losses are considered reasonably possible or probable and whether they are estimable. Based upon this assessment, we carry out an evaluation of disclosure requirements and consider possible accruals in the financial statements.

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Research and Development Expense

Research and development costs are charged to expense as incurred in performing research and development activities. Research and development expenses are comprised of costs incurred in performing research and development activities, including salaries and benefits, facilities costs, pre-clinical and clinical costs, contract services, consulting, depreciation and amortization expense, and other related costs. Costs associated with acquired technology, in the form of upfront fees or milestone payments, are charged to research and development expense as incurred.

Income Taxes

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and operating losses and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted statutory tax rates expected to apply to taxable income in the jurisdictions and years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

We evaluate the realizability of our net deferred tax assets, including considering the level of historical operating results and projections of taxable income for the future. We record a full valuation allowance to reduce our net deferred tax assets when it is determined that it is more likely than not that our net deferred tax assets will not be realized.

We recognize, measure, present and disclose in our financial statements any uncertain tax positions that we have taken or expect to take on a tax return. We operate in multiple jurisdictions, both within and outside the United States, and may be subject to audits from various tax authorities. Management’s judgment is required in determining our provision for income taxes, our deferred tax assets and liabilities, liabilities for uncertain tax positions, and any valuation allowance recorded against our net deferred tax assets. We will monitor the extent to which our deferred tax assets may be realized and adjust the valuation allowance accordingly.

Our policy is to classify interest and penalties related to unrecognized tax benefits as income tax expense

Recently Issued Accounting Pronouncements

We review new accounting standards to determine the expected financial impact, if any, that the adoption of each standard will have. For the recently issued accounting standards that we believe may have an impact on our consolidated financial statements, see “Note 2—Summary of Significant Accounting Policies” in our consolidated financial statements.

Smaller Reporting Company Status

Currently, we qualify as a smaller reporting company.

As a smaller reporting company, we are eligible and have taken advantage of certain exemptions from various reporting requirements that are not available to public reporting companies that do not qualify for this classification, including, but not limited to:

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An opportunity for reduced disclosure obligations regarding executive compensation in our periodic and annual reports, including without limitation exemption from the requirement to provide a compensation discussion and analysis describing compensation practices and procedures,
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An opportunity for reduced financial statement disclosure in registration statements and in annual reports on Form 10-K, which only requires two years of audited financial statements rather than the three years of audited financial statements that are required for other public companies,
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An opportunity for reduced audit and other compliance expenses as we are not subject to the requirement to obtain an auditor’s report on internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act of 2002, and
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An opportunity to utilize the non-accelerated filer time-line requirements beginning with our annual report for the year ending December 31, 2020 and quarterly filings thereafter.

For as long as we continue to be a smaller reporting company, we expect that we will take advantage of both the reduced internal control audit requirements and the disclosure obligations available to us as a result of this classification.

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FY 2021 10-K MD&A

SEC filing source: 0001583648-22-000016.

Extracted structurally from real Item 7 body heading to real Item 7A/8 boundary. Confidence: high. Filing date: 2022-03-02. Report date: 2021-12-31.

Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and the related notes and other financial information included in this Annual Report on Form 10-K. Some of the information contained in this discussion and analysis or set forth elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties as described under the heading “Forward-Looking Statements” elsewhere in this Annual Report on Form 10-K. You should review the disclosure under the heading “Risk Factors” in this Annual Report on Form 10-K for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

Overview

We are a clinical-stage biotechnology company that discovers and develops Anticalin-based drugs to target validated disease pathways in unique and transformative ways. Our clinical pipeline includes an inhaled IL-4Rα antagonist Anticalin protein to treat uncontrolled asthma, an immuno-oncology, or IO, bispecific targeting HER2 and 4-1BB, and an IO bispecific targeting PD-L1 and 4-1BB. Proprietary to us, Anticalin proteins are a novel class of therapeutics validated in the clinic and through partnerships with leading pharmaceutical companies. In particular, we have alliances with AstraZeneca and Genentech to treat respiratory diseases, with Genentech also in ophthalmology and with Servier, Seagen, and Boston Pharmaceuticals in IO. Our discovery and development programs are in varying stages and include:

•PRS-060/AZD1402, our lead respiratory program partnered with AstraZeneca for the treatment of asthma, is a drug candidate that antagonizes IL-4Rα, thereby inhibiting the downstream action of IL-4 and IL-13, two cytokines known to be key mediators in the inflammatory cascade that drive the pathogenesis of asthma and other inflammatory diseases.

◦PRS-060/AZD1402 was tested in a nebulized formulation and an IV arm for pharmacokinetic, or PK, assessment in 54 healthy volunteers at nominal dose levels ranging from 0.25 mg to 400 mg in a phase 1 SAD, study. Data from that study were presented at the American Thoracic Society International Conference in May 2019 showing that PRS-060/AZD1402 was well-tolerated when given as single inhaled or intravenous doses to healthy volunteers and there was systemic target engagement (as measured by pSTAT6 inhibition). We presented interim data from the PRS-060/AZD1402 phase 1 MAD study at the European Respiratory Society International Congress in October 2019 and reported that PRS-060/AZD1402 was safe and well-tolerated at all doses, led to a statistically significant

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reduction in FeNO, a validated biomarker for eosinophilic airway inflammation, and showed dose-dependent systemic target engagement in patients with mild asthma and elevated levels of FeNO (≥ 35ppb).

◦The phase 2a asthma study is ongoing in multiple sites globally. This phase 2a study is a two-part, multi-center, placebo-controlled clinical study of PRS-060/AZD1402 that will evaluate PRS-060/AZD1402 at up to three dose levels using a dry powder formulation administered twice daily. In part 1a (1 mg and 3 mg dose safety) of the study, 31 asthma patients, controlled on standard of care (medium dose inhaled corticosteroids (ICS) with long-acting beta agonists (LABA)), received PRS-060/AZD1402 twice daily over four weeks to establish the safety profile and pharmacokinetics of the dry powder formulation of PRS-060/AZD1402. A safety review following completion of part 1a included an evaluation, compared to placebo, of the incidence of adverse events, changes in laboratory markers (immuno-biomarkers, clinical chemistry, and hematology), and forced expiratory volume in one second (FEV1). AstraZeneca began enrollment of part 2a (1 mg and 3 mg dose efficacy) of the study to evaluate efficacy, safety, and pharmacokinetics of PRS-060/AZD1402 administered twice daily to asthma patients, uncontrolled on medium dose ICS LABA, that have a blood eosinophil count of ≥ 150 cells/μL and FeNO ≥ 25 ppb in the 1 mg and 3 mg arms and a placebo arm. Following a four-week run-in period, patients will be dosed and monitored over four weeks. FEV1 improvement compared to placebo will be the primary endpoint in this portion of the study. AstraZeneca began enrollment of part 1b (10 mg dose safety) of the study to evaluate the safety of the10 mg dose in asthma patients controlled on standard of care who will receive PRS-060/AZD1402 twice daily over four weeks. We expect to announce topline data from the phase 2a study this year, although we are actively evaluating the feasibility of study timelines in the current geopolitical environment and will update guidance in the orderly course of business, if needed. Upon receipt of the topline data and notice from AstraZeneca, including a product development plan and budget, the Company will have 30 days to opt into co-development of the program with AstraZeneca. The Company also retains a separate option to co-commercialize PRS-060/AZD1402 with AstraZeneca in the United States.

•Four discovery-stage respiratory programs were included in the AstraZeneca alliance beyond PRS-060/AZD1402, the targets and disease areas of which are undisclosed. In January2022, the Company and AstraZeneca jointly discontinued one of the four discovery-stage programs in the collaboration beyond PRS-060/AZD1402, for which they were not able to validate an exploratory target. Pieris retains co-development and co-commercialization options for two of the three remaining active discovery programs.

•Our lead fully proprietary respiratory asset, PRS-220, an oral inhaled Anticalin protein targeting connective tissue growth factor, or CTGF, is being developed as a local treatment for idiopathic pulmonary fibrosis, or IPF, and has passed the drug candidate nomination stage. We received a €14.2 million grant from the Bavarian Ministry of Economic Affairs, Regional Development and Energy supporting research and development of the program for post-acute sequelae of SARS-CoV-2 infection (PASC) pulmonary fibrosis, or PASC-PF, also known as post-COVID-19 syndrome pulmonary fibrosis, or “long COVID”.

◦PRS-220 is currently in the IND-enabling stage. We presented initial preclinical data for PRS-220 at the European Respiratory Society International Congress 2021, or ERS, demonstrating a more potent and durable target engagement profile compared to a clinical-stage, systemically delivered anti-CTGF antibody benchmark. Additionally, the targeting of CTGF locally in the lung showed increased attenuation of fibrotic lung remodeling in vivo compared to the systemically delivered antibody. This outcome correlates with superior lung tissue exposure of PRS-220 compared to that of the systemically administered antibody in head-to-head studies, where intratracheally administered PRS-220 efficiently penetrates the fibrotic, interstitial lung tissue of mice. Clinical development for the program is expected to begin in 2022.

•We entered into a multi-program research collaboration and license agreement with Genentech, a member of the Roche Group, to discover, develop and commercialize locally delivered respiratory and ophthalmology therapies. We have initiated joint discovery activities in each of the two committed programs.

•Cinrebafusp alfa, our lead IO program, is a fusion protein, comprising a HER2-targeting antibody genetically linked to 4-1BB-targeting Anticalin proteins. Cinrebafusp alfa is designed to drive tumor localized T cell activation through tumor-targeted drug clustering mediated by HER2 expressed on tumor cells. This program was the first bispecific T cell co-stimulatory agonist to enter clinical development.

In January 2022, we dosed the first patient in our two-arm phase 2 study for cinrebafusp alfa in gastric cancer in the United States. Supported by additional data we presented from the phase 1 monotherapy study of cinrebafusp alfa in an oral presentation at the American Association for Cancer Research Virtual Congress, or AACR, in April 2021, the first arm of the phase 2 study includes the combination with ramucirumab and paclitaxel in HER2-high gastric cancer, while the second arm is in combination with tucatinib in HER2-low gastric cancer. Collaboration partners Lilly and Seagen are

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supplying ramucirumab and tucatinib, respectively. The criteria for advancement of this program will evaluate a composite of measures, including a minimum target of 50% ORR in the HER2-high arm and a minimum target of 40% ORR in the HER2-low arm, duration of response, and safety. The Company expects to report initial data from the arm evaluating cinrebafusp alfa in combination with tucatinib in HER2-low gastric cancer in 2022 and expects to report data from the arm evaluating cinrebafusp alfa in combination with ramucirumab and paclitaxel in HER2-high gastric cancer in 2023. In June 2021, FDA granted orphan drug designation to cinrebafusp alfa for the treatment of HER2-high and HER2-low expressing gastric cancers.

◦The supporting data presented at AACR included an evaluation of 78 patients who had been enrolled in the monotherapy study as of the February 2021 cutoff date, including four additional patients enrolled in the active dose cohorts (≥2.5 mg/kg) since the data were presented at the ESMO Virtual Congress in September 2020. Out of 42 response-evaluable patients at the time of the data cutoff of February 25, 2021, according to RECIST 1.1, one patient with stage 4 rectal adenocarcinoma achieved a confirmed complete response at the 18 mg/kg Q2W dose (cohort 13b), four patients achieved a partial response (three at the 8 mg/kg Q2W dose (cohort 11b) and one at the 18 mg/kg Q2W dose (cohort 13b)), and stable disease was observed in 17 patients as best response out of 42 evaluable patients across the predicted active dose ranges (cohorts 9-13b), translating to an ORR of 12% and a DCR of 52%. Consistent with the mechanism of action of cinrebafusp alfa, dose-dependent immune activation was demonstrated by showing an increase in CD8+, T cell, NK cells and cytotoxic activity in the tumor microenvironment and an increase of soluble 4-1BB in the blood, indicating target engagement of 4-1BB and activation of immune cells. Cinrebafusp alfa demonstrated durable anti-tumor activity in a heavily pre-treated patient population. Additionally, clinical benefit was observed in patients with “cold” tumors as well as those with low HER2 expression who were enrolled into the study on the basis of archived HER2-status and were later re-assessed on the basis of a pre-treatment biopsy. Cinrebafusp alfa also showed an acceptable safety profile at all doses and schedules tested in the clinical study with no dose-limiting toxicities. The totality of response data generated in cohorts 11b (8 mg/kg Q2W) and 13b support the recommended phase 2 dose of a two-cycle loading dose of 18 mg/kg (Q2W), following by an 8 mg/kg dose (Q2W) in subsequent cycles.

◦The last update of the atezolizumab combination study of cinrebafusp alfa was presented at the ESMO Virtual Congress in September 2020. As of the July 2020 cutoff date, 41 patients had been enrolled and seven dose cohorts have been evaluated at a Q3W dosing schedule ranging from 0.05 mg/kg to 8 mg/kg in combination with a fixed 1200 mg dose of atezolizumab. In that trial, under RECIST 1.1, four patients achieved a confirmed partial response at active dose levels and an acceptable safety profile was observed at all doses and schedules tested in the clinical study.

•PRS-344/S095012, a bispecific Anticalin-antibody fusion protein comprising a PD-L1-targeting antibody genetically fused to Anticalin proteins specific for 4-1BB, is being developed as part of our IO collaboration with Servier. The first patient was dosed in the phase 1/2 study of PRS-344/S095012, a 4-1BB/PD-L1 bispecific, in November 2021.

•We are also developing additional IO drug candidates beyond cinrebafusp alfa and PRS-344/S095012 that are multi-specific Anticalin-based fusion proteins designed to engage immunomodulatory targets, comprising a variety of multifunctional biotherapeutics. Other IO drug candidates are being developed as part of our collaborations Servier, Seagen, and Boston Pharmaceuticals.

◦Servier has obtained in vivo proof of concept for PRS-352, an Anticalin-based bispecific beyond 4-1BB, triggering an undisclosed milestone payment to Pieris. Servier is responsible for further development of the program.

◦We achieved a key development milestone during 2020 for one of the programs in the Seagen collaboration, a bispecific tumor-targeted costimulatory agonist, triggering a $5.0 million milestone. We also handed the program over to Seagen, who is responsible for further advancement and funding of the asset. The program is one of up to three potential programs in the Seagen alliance, and we believe the achieved milestone further validates our approach and leadership in IO bispecifics, complementing the encouraging clinical data seen with cinrebafusp alfa. During the third quarter of 2021, we initiated the second program within the collaboration with Seagen. We retain a co-promotion option for one of the three programs in the Seagen collaboration in the United States.

◦We are supporting IND-readiness for PRS-342/BOS-342, a 4-1BB/GPC3 bispecific that we have exclusively licensed to Boston Pharmaceuticals, who will oversee future development of that asset.

Since inception, we have devoted nearly all of our efforts and resources to our research and development activities and have incurred significant net losses. For the years ended December 31, 2021 and 2020, we reported net losses of $45.7 million and

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$37.2 million, respectively. As of December 31, 2021, we had an accumulated deficit of $257.1 million. We expect to continue incurring substantial losses for the next several years as we continue to develop our clinical and preclinical drug candidates and programs. Our operating expenses are comprised of research and development expenses and general and administrative expenses.

We have not generated any revenues from product sales to date, and we do not expect to generate revenues from product sales for the foreseeable future. Our revenues for the fiscal years ended December 31, 2021 and 2020 were from license and collaboration agreements with our partners.

A significant portion of our operations are conducted in countries other than the United States. Since we conduct our business in U.S. dollars, our main exposure, if any, results from changes in the exchange rates between the euro and the U.S. dollar. At each period end, we remeasure assets and liabilities to the functional currency of that entity (for example, U.S. dollar payables recorded by Pieris Pharmaceuticals GmbH). Remeasurement gains and losses are recorded in the statement of operations line item ‘Other income (expense), net’. All assets and liabilities denominated in euros are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenues and expenses are translated at the weighted average rate during the period. Equity transactions are translated using historical exchange rates. All adjustments resulting from translating foreign currency financial statements into U.S. dollars are included in accumulated other comprehensive income (loss).

Key Financial Terms and Metrics

The following discussion summarizes the key factors our management believes are necessary for an understanding of our consolidated financial statements.

Revenues

We have not generated any revenues from product sales to date and we do not expect to generate revenues from product sales for the foreseeable future. Our revenues for the last two years have been from the license and collaboration agreements with AstraZeneca, Servier, Seagen, Genentech and Boston Pharmaceuticals.

The revenues from AstraZeneca, Servier, Seagen, Genentech and Boston Pharmaceuticals. have been comprised primarily of upfront payments, research and development services and milestone payments. For additional information about our revenue recognition policy, see “Note 2-Summary of Significant Accounting Policies”.

Research and Development Expenses

The process of researching and developing drugs for human use is lengthy, unpredictable, and subject to many risks. We expect to continue incurring substantial expenses for the next several years as we continue to develop our clinical and preclinical drug candidates and programs. We are unable, with any certainty, to estimate either the costs or the timelines in which those expenses will be incurred. Our current development plans focus on the following programs: our lead respiratory program, PRS-060/AZD1402 and our proprietary respiratory program, PRS-220, our IO programs, currently comprised of cinrebafusp alfa as well as multiple additional proprietary and partnered programs, including PRS-344/S095012. These programs consume a large proportion of our current, as well as projected, resources.

Our research and development costs include costs that are directly attributable to the creation of certain of our Anticalin drug candidates and are comprised of:

•internal recurring costs, such as personnel-related costs (salaries, employee benefits, equity compensation and other costs), materials and supplies, facilities and maintenance costs attributable to research and development functions; and

•fees paid to external parties who provide us with contract services, such as preclinical testing, manufacturing and related testing and clinical trial activities.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries, employee benefits, equity compensation, and other personnel-related costs associated with executive, administrative and other support staff. Other significant general and administrative expenses include the costs associated with professional fees for accounting, auditing, insurance costs, consulting and legal services, along with facility and maintenance costs attributable to general and administrative functions.

Results of Operations

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Comparison of Years Ended December 31, 2021 and December 31, 2020

The following table sets forth our revenues and operating expenses for the fiscal years ended December 31, 2021 and 2020 (in thousands):

Years ended December 31,
20212020
Revenues$31,418$29,323
Research and development expenses66,65646,531
General and administrative expenses16,59316,713
Total operating expenses83,24963,244
Interest income4511
Grant income3,685
Other (expense) income , net2,404(3,656)
Loss before income taxes(45,738)(37,066)
Benefit for income tax164
Net loss$(45,738)$(37,230)

Revenues

The following table provides a comparison of revenues for the years ended December 31, 2021 and 2020 (in thousands):

Years ended December 31,
20212020Increase/(Decrease)
Customer revenue$27,940$23,911$4,029
Collaboration revenue3,4785,412$(1,934)
Total Revenue$31,418$29,323$2,095

•The $4.0 million increase in customer revenue for the year ended December 31, 2021 compared to the year ended December 31, 2020 is driven by the following:

◦Higher revenue in the current year for the phase 2a milestone ($13.0 million) recognized for PRS-060/AZD1402 under the AstraZeneca collaboration, revenue attributed to two new collaboration agreements, Genentech ($2.0 million) and Boston Pharmaceuticals ($5.7 million) and the achievement of a preclinical milestone on PRS-352.

◦Lower Seagen revenue as there was an achievement of a $5.0 million milestone on the first collaboration program recorded in 2020 along with the impact of the execution of a contractual amendment (approximately $3.5 million) in the same year.

◦Lower Servier revenue as the prior year included recognition of amounts for a preclinical stage product that is not being pursued under the Servier collaboration.

•Collaboration revenue decreased by $1.9 million in the year ended December 31, 2021 compared to the year ended December 31, 2020. The decrease relates to revenue recognized in the prior year on a preclinical stage product that Servier declined to pursue further, offset slightly by higher Servier cost-sharing revenue generated from higher levels of manufacturing costs incurred on PRS-344/S095012.

Research and Development Expenses

The following table provides a comparison of the research and development expenses for the years ended December 31, 2021 and 2020 (in thousands):

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Years ended December 31,
20212020Increase/(Decrease)
Immuno-oncology$23,210$12,386$10,824
Respiratory17,1589,677$7,481
Other R&D activities26,28824,468$1,820
Total$66,656$46,531$20,125

•The $10.8 million increase in our immuno-oncology program spending period-over-period is due primarily to an increase in clinical and manufacturing costs for cinrebafusp alfa and higher manufacturing costs for PRS-344/S095012, all partially offset by lower preclinical costs across a number of programs.

•The $7.5 million increase for our respiratory programs period-over-period is due to higher manufacturing costs for PRS-220, increased preclinical work on a number of early stage programs as well as higher license fees, offset partially by lower clinical and manufacturing costs with respect to activities for PRS-060/AZD1402.

•The $1.8 million increase in other research and development activities expenses is mainly due primarily to higher personnel and recruiting costs due to higher headcount, higher external consulting and higher license fees, offset slightly by lower lab consumable costs and lower facility costs due to the move to the new R&D facility in Hallbergmoos, Germany in the prior year.

General and Administrative Expenses

General and administrative expenses was $16.6 million for the year ended December 31, 2021 as compared to $16.7 million for the year ended December 31, 2020. The period-over-period decrease is due primarily to lower legal, accounting and project management costs, along with lower one-time office and building equipment costs related to the move to the new R&D facility in Hallbergmoos, Germany in the prior year. These reductions in cost were offset by higher fixed and variable compensation and higher insurance costs.

Other income (expense), net

Our other income was $6.1 million for the year ended December 31, 2021 as compared to a other expense of $3.1 million for the year ended December 31, 2020. This period-over-period increase was primarily due to $3.7 million of grant income recorded on PRS-220 as well as foreign exchange realized gains due to a strengthening U.S. dollar compared to the same period in the prior year.

Liquidity and Capital Resources

We are subject to risks common to companies in the biotechnology industry, including but not limited to, the need for additional capital, risks of failure of preclinical studies and clinical trials, the need to obtain marketing approval and reimbursement for any drug product candidate that we may identify and develop, the need to successfully commercialize and gain market acceptance of our product candidates, dependence on key personnel, protection of proprietary technology, compliance with government regulations, development of technological innovations by competitors, reliance on third-party manufacturers and the ability to transition from pilot-scale production to large-scale manufacturing of products.

Through December 31, 2021, we have funded our operations with $568.0 million of cash that has been obtained from the following main sources: $276.0 million from sales of equity; $270.6 million in total payments received under license and collaboration agreements, including $52.9 million for research and development services costs received from our collaboration partners; $14.8 million from government grants and $6.5 million from loans.

As of December 31, 2021, we had a total of $117.8 million in cash and cash equivalents. We have incurred losses in every period since inception including the years ended December 31, 2021 and 2020, respectively, and have a total accumulated deficit of $257.1 million as of December 31, 2021. Net losses and negative cash flows have had, and will continue to have, an adverse effect on our stockholders’ equity and working capital. We expect to continue to incur operating losses for at least the next several years.

The following table provides a summary of operating, investing, and financing cash flows for the years ended December 31, 2021 and 2020 respectively (in thousands):

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Years ended December 31,
20212020
Net cash used in operating activities$(7,660)$(45,896)
Net cash (used in) provided by investing activities(949)39,212
Net cash provided by financing activities59,12710,115

Net cash used in operating activities for the year ended December 31, 2021 and 2020 was $7.7 million and $45.9 million, respectively. Lower operating cash used in 2021 was benefited by higher deferred revenue, primarily driven by the new collaboration agreement with Genentech, and higher accounts payable and accrued expenses, offset partially by higher accounts receivables and prepaid expenses. This compares to the impact of lower accounts payable, accrued expenses and deferred revenue, primarily driven by revenue recognized for the discontinued Servier programs and the satisfaction of a performance obligation under the Seagen agreements, for the year ended December 31, 2020. Offsetting the impact from changes in operating assets and liabilities was an increase in the net loss in 2021 compared to the same timeframe in 2020.

The change in net cash used in investing activities for the year ended December 31, 2021 compared to net cash provided by investing activities the same period in 2020 is mainly attributable to the impact of net investments changes (purchases and maturities of available-for-sale securities) for which there is no activity in the comparable current year period. Additionally, purchases of property and equipment were lower as the 2020 purchases primarily related to our move to a new R&D facility.

Financing activities for the year ended December 31, 2021 and 2020 provided cash of $59.1 million and $10.1 million, respectively. The increase in 2021 compared to 2020 is driven by equity investments from both Seagen and AstraZeneca (see Note 3), higher sales activity under our ATM programs and higher proceeds received from warrant and option exercises. There was limited option exercise activity for the same period in 2020.

In August 2019, we entered into a sales agreement pursuant to which we may offer and sell shares of its common stock, from time to time, up to an aggregate gross sales proceeds of $50.0 million through an “at the market offering” program, or the 2019 ATM Program, under a shelf registration statement on Form S-3 (File No. 333-226725). In August 2021, the 2019 ATM Program expired.

In August 2021, we established a second ATM offering program, or the 2021 ATM Program, under the existing sales agreement with Jefferies LLC, pursuant to which the Company may offer and sell shares of its common stock, from time to time, up to an aggregate amount of gross sales proceeds of $50.0 million. The 2021 ATM Program is offered under a shelf registration statement on Form S-3 that was filed with and declared effective by the SEC in August 2021. For the year ended December 31, 2021, we sold 8.2 million shares for gross proceeds of $39.7 million under both ATM programs at an average stock price of $4.85. For the year ended December 31, 2020, we sold 3.6 million shares at a price of $2.80 per share resulting in gross proceeds of $10.0 million under the 2019 ATM Program only.

In March 2021, we amended our strategic collaboration agreement with Seagen which resulted in their purchase of $13.0 million of our common stock (See Note 3). In March 2021, we also earned a $13.0 million milestone from AstraZeneca related to the initiation of the phase 2a study for PRS-060/AZD1402 and AstraZeneca agreed to purchase $10.0 million of our common stock (See Note 3).

Our future success is dependent on our ability to identify and develop our product candidates, expand our corporate infrastructure and ultimately upon our ability to attain profitable operations. We have devoted substantially all of our financial resources and efforts to research and development and general and administrative expenses to support such research and development. We have several research and development programs underway in varying stages of development and we expect that these programs will continue to require increasing amounts of cash for development, conducting clinical trials, and testing and manufacturing of product material. Cash necessary to fund operations will increase significantly over the next several years as we continue to conduct these activities necessary to pursue governmental regulatory approval of clinical-stage programs and other product candidates.

Any requirements for additional capital will depend on many factors, including the following:

•the scope, rate of progress, results and cost of our clinical studies, preclinical testing and other related activities;

•the cost of manufacturing clinical supplies, and establishing commercial supplies, of our drug candidates and any products that we may develop;

•the number and characteristics of drug candidates that we pursue;

•the cost, timing and outcomes of regulatory approvals;

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•the cost and timing of establishing sales, marketing and distribution capabilities;

•the terms and timing of any collaborative, licensing and other arrangements that we may establish;

•the timing, receipt and amount of sales, profit sharing or royalties, if any, from our potential products;

•the cost of preparing, filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights;

•the extent to which we acquire or invest in businesses, products or technologies, although we currently have no commitments or agreements relating to any of these types of transactions; and

•the effects of the COVID-19 pandemic and the cost and timing of actions taken to contain it.

In addition, any unfavorable development or delay in the progress of our core clinical-stage programs including cinrebafusp alfa and PRS-060/AZD1402 could have a material adverse impact on our ability to raise additional capital.

We plan to raise additional capital to fulfill our operating and capital requirements through public or private equity financings, utilization of our ATM program, strategic collaborations, licensing arrangements, and/or the achievement of milestones under our collaborative agreements. The funding requirements of our operating plans, however, are based on estimates that are subject to risks and uncertainties and may change as a result of many factors currently unknown. Although we continue to pursue these funding plans, there is no assurance that we will be successful in obtaining sufficient funding on terms acceptable to us to fund continuing operations, if at all. Until such time as we can generate substantial product revenues, if ever, we expect to finance our cash needs through a combination of equity offerings, debt financings, strategic partnerships and licensing arrangements. The terms of any future financing may adversely affect the holdings or the rights of our existing stockholders.

We believe that our currently available funds will be sufficient to fund our operations through at least the next twelve months from the issuance of this Annual Report on Form 10-K. Our belief with respect to our ability to fund operations is based on estimates that are subject to risks and uncertainties. If actual results are different from our estimates, we may need to seek additional funding. If we are unable to obtain additional funding on acceptable terms when needed, we may be required to defer or limit some or all of our research, development, and/or clinical projects

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements, as defined under applicable SEC rules.

Critical Accounting Policies and Estimates

The discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP. The preparation of these financial statements requires management to make estimates and judgments that affect reported amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses for the periods presented. Management makes estimates and exercises judgment in revenue recognition, accrued and prepaid clinical trial expenses, share-based payments and income taxes. Judgments must also be made about the disclosure of contingent liabilities, and these estimates and assumptions form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from those estimates and under different assumptions or conditions.

While our significant accounting policies are more fully described in the notes to our consolidated financial statements, we have identified the following accounting policies that we believe require application of management’s most subjective judgments, often requiring the need to make estimates about the effect of matters that are inherently uncertain and may change in subsequent periods. Our actual results could differ from these estimates and such differences could be material.

Revenue Recognition

Pieris has entered into several licensing agreements with collaboration partners for the development of Anticalin therapeutics against a variety of targets. The terms of these agreements provide for the transfer of multiple goods or services which may include: (i) licenses, or options to obtain licenses, to Pieris’ Anticalin technology and/or specific programs and (ii) research and development activities to be performed on behalf of or with a collaborative partner. Payments to Pieris under these agreements may include upfront fees (which include license and option fees), payments for research and development activities, payments

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based upon the achievement of certain milestones, and royalties on product sales. There are no performance, cancellation, termination or refund provisions in any of the arrangements that could result in material financial consequences to Pieris.

The Company accounts for revenue recognition pursuant to FASB ASC Topic 606, Revenue Recognition, or ASC 606. The standard requires a company to recognize revenue when it transfers goods or services to customers in an amount that reflects the consideration that the company expects to receive for those goods or services.

Collaborative Arrangements

We consider the nature and contractual terms of an arrangement and assess whether the arrangement involves a joint operating activity pursuant to which we are an active participant and are exposed to significant risks and rewards with respect to the arrangement. If we are an active participant and are exposed to the significant risks and rewards with respect to the arrangement, we account for these arrangements pursuant to ASC 808, Collaborative Arrangements, or ASC 808, and apply a systematic and rational approach to recognize revenue. We classify payments received as revenue and payments made as a reduction of revenue in the period in which they are earned.

Revenue from Contracts with Customers

In accordance with ASC 606, revenue is recognized when a customer obtains control of promised goods or services. The amount of revenue recognized reflects the consideration to which we expect to be entitled in exchange for these goods and services. To achieve this core principle, we apply the following five steps: 1) identify the customer contract; 2) identify the contract’s performance obligations; 3) determine the transaction price; 4) allocate the transaction price to the performance obligations; and 5) recognize revenue when or as a performance obligation is satisfied.

We evaluate all promised goods and services within a customer contract and determines which of such goods and services are separate performance obligations. This evaluation includes an assessment of whether the good or service is capable of being distinct and whether the good or service is separable from other promises in the contract.  In assessing whether promised goods or services are distinct, we consider factors such as the stage of development of the underlying intellectual property and the capabilities of the customer to develop the intellectual property on their own or whether the required expertise is readily available.

Licensing arrangements are analyzed to determine whether the promised goods or services, which often include licenses, research and development services and governance committee services, are distinct or whether they must be accounted for as part of a combined performance obligation. If the license is considered not to be distinct, the license would then be combined with other promised goods or services as a combined performance obligation. If we are involved in a governance committee, we assess whether our involvement constitutes a separate performance obligation. When governance committee services are determined to be separate performance obligations, we determine the fair value to be allocated to this promised service.

Certain contracts contain optional and additional items, which are considered marketing offers and are accounted for as separate contracts with the customer if such option is elected by the customer, unless the option provides a material right which would not be provided without entering into the contract.  An option that is considered a material right is accounted for as a separate performance obligation.

The transaction price is determined based on the consideration to which we will be entitled in exchange for transferring goods and services to the customer. A contract may contain variable consideration, including potential payments for both milestone and research and development services. For certain potential milestone payments, we estimate the amount of variable consideration by using the most likely amount method. In making this assessment, we evaluate factors such as the clinical, regulatory, commercial and other risks that must be overcome to achieve the milestone. Each reporting period we re-evaluate the probability of achievement of such variable consideration and any related constraints. We will include variable consideration, without constraint, in the transaction price to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. For potential research and development service payments, we estimate the amount of variable consideration by using the expected value method, including any approved budget updates arising from additional research or development services.

If the contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price among the performance obligations on a relative standalone selling price basis unless a portion of the transaction price is variable and meets the criteria to be allocated entirely to a performance obligation or to a distinct good or service that forms part of a single performance obligation.

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We allocate the transaction price based on the estimated standalone selling price of the underlying performance obligations or in the case of certain variable consideration to one or more performance obligations. We must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. We utilize key assumptions to determine the stand-alone selling price, which may include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs to complete the respective performance obligation. Certain variable consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated to each performance obligation are consistent with the amount we would expect to receive for each performance obligation.

When a performance obligation is satisfied, revenue is recognized for the amount of the transaction price, excluding estimates of variable consideration that are constrained, that is allocated to that performance obligation on a relative standalone selling price basis. Significant management judgment is required in determining the level of effort required under an arrangement and the period over which we are expected to complete its performance obligations under an arrangement.

For performance obligations consisting of licenses and other promises, we utilize judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non- refundable, up-front fees. We evaluate the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition. If the license to our intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, we will recognize revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the customer and the customer is able to use and benefit from the license.

Milestones and Royalties

We aggregate milestones into four categories: (i) research milestones, (ii) development milestones, (iii) commercial milestones, and (iv) sales milestones. Research milestones are typically achieved upon reaching certain success criteria as defined in each agreement related to developing an Anticalin protein against the specified target. Development milestones are typically reached when a compound reaches a defined phase of clinical research or passes such phase or upon gaining regulatory approvals. Commercial milestones are typically achieved when an approved pharmaceutical product reaches the status for commercial sale, including regulatory approval. Sales milestones are certain defined levels of net sales by the licensee, such as when a product first achieves global sales or annual sales of a specified amount.

There is uncertainty that the events to obtain the research and development milestones will be achieved given the nature of clinical development and the stage of our technology. We have thus determined that all research and development milestones will be constrained until it is deemed probable that a significant revenue reversal will not occur. For revenues from research and development milestones, payments will be recognized consistent with the recognition pattern of the performance obligation to which they relate.

For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and for which the license is deemed to be the predominant item to which the royalties relate, we recognize revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). Commercial milestones and sales royalties are determined by sales or usage-based thresholds and will be accounted for under the royalty recognition constraint as constrained variable consideration.

Contract Balances

We recognize a contract asset when we transfer goods or services to a customer before the customer pays consideration or before payment is due, excluding any amounts presented as a receivable (i.e., accounts receivable). A contract asset is an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer. The contract liabilities (i.e., deferred revenue) primarily relate to contracts where we have received payment but has not yet satisfied the related performance obligations.

Contingencies

Accruals are recorded for loss contingencies when it is probable that a liability has been incurred and the amount of the related loss can be reasonably estimated. We evaluate, on a quarterly basis, developments in legal proceedings and other matters that could cause an increase or decrease in the amount of the liability that has been accrued previously. Considering facts known at the time of the assessment, we determine whether potential losses are considered reasonably possible or probable and whether

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they are estimable. Based upon this assessment, we carry out an evaluation of disclosure requirements and consider possible accruals in the financial statements.

Research and Development Expense

Research and development costs are charged to expense as incurred in performing research and development activities. Research and development expenses are comprised of costs incurred in performing research and development activities, including salaries and benefits, facilities costs, pre-clinical and clinical costs, contract services, consulting, depreciation and amortization expense, and other related costs. Costs associated with acquired technology, in the form of upfront fees or milestone payments, are charged to research and development expense as incurred.

Income Taxes

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and operating losses and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted statutory tax rates expected to apply to taxable income in the jurisdictions and years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

We evaluate the realizability of our net deferred tax assets, including considering the level of historical operating results and projections of taxable income for the future. We record a full valuation allowance to reduce our net deferred tax assets when it is determined that it is more likely than not that our net deferred tax assets will not be realized.

We recognize, measure, present and disclose in our financial statements any uncertain tax positions that we have taken or expect to take on a tax return. We operate in multiple jurisdictions, both within and outside the United States, and may be subject to audits from various tax authorities. Management’s judgment is required in determining our provision for income taxes, our deferred tax assets and liabilities, liabilities for uncertain tax positions, and any valuation allowance recorded against our net deferred tax assets. We will monitor the extent to which our deferred tax assets may be realized and adjust the valuation allowance accordingly.

Our policy is to classify interest and penalties related to unrecognized tax benefits as income tax expense.

Recently Issued Accounting Pronouncements

We review new accounting standards to determine the expected financial impact, if any, that the adoption of each standard will have. For the recently issued accounting standards that we believe may have an impact on our consolidated financial statements, see “Note 2—Summary of Significant Accounting Policies” in our consolidated financial statements.

Smaller Reporting Company Status

Currently, we qualify as a smaller reporting company.

As a smaller reporting company, we are eligible and have taken advantage of certain exemptions from various reporting requirements that are not available to public reporting companies that do not qualify for this classification, including, but not limited to:

•An opportunity for reduced disclosure obligations regarding executive compensation in our periodic and annual reports, including without limitation exemption from the requirement to provide a compensation discussion and analysis describing compensation practices and procedures,

•An opportunity for reduced financial statement disclosure in registration statements and in annual reports on Form 10-K, which only requires two years of audited financial statements rather than the three years of audited financial statements that are required for other public companies,

•An opportunity for reduced audit and other compliance expenses as we are not subject to the requirement to obtain an auditor’s report on internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act of 2002, and

•An opportunity to utilize the non-accelerated filer time-line requirements beginning with our annual report for the year ending December 31, 2020 and quarterly filings thereafter.

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For as long as we continue to be a smaller reporting company, we expect that we will take advantage of both the reduced internal control audit requirements and the disclosure obligations available to us as a result of this classification.