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PALVELLA THERAPEUTICS, INC.

For the period ended Dec 31, 2025. Filed Mar 31, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 31, 2026

PVLA$168.71-3.1%Stored close · as of Nov 10, 2026

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Contents

Item 8. Report of Independent Registered Public Accounting Firm

Report of Independent Registered Public Accounting Firm

To the Shareholders and the Board of Directors of Palvella Therapeutics, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Palvella Therapeutics, Inc. (the Company) as of December 31, 2025 and 2024, the related consolidated statements of operations and comprehensive loss, changes in convertible preferred stock and stockholders' equity (deficit), and cash flows for each of the two years in the period ended December 31, 2025, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2025, in conformity with U.S. generally accepted accounting principles.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Royalty agreement liability and related interest expense
Description of the MatterAs described in Note 4 to the financial statements, the Company is party to a development funding agreement with Ligand Pharmaceuticals, Inc. (Ligand) (the Ligand Agreement). Pursuant to the Ligand Agreement, as partial consideration for the upfront payment received from Ligand, the Company agreed to pay to Ligand tiered future royalties based on any aggregate annual worldwide net product sales of any products based on QTORIN rapamycin. The Company recorded its obligation to pay tiered royalties under the Ligand Agreement as a debt instrument (royalty agreement liability) on the balance sheet at a carrying value of $11.9M as of December 31, 2025 and has recognized imputed interest expense of $3.9M for the year ended December 31, 2025 using the effective interest rate method. 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. The effective interest rate may vary during the term of the Ligand Agreement
based on changes in the probability-adjusted cash flow estimates of the Company’s potential future royalty payments under the Ligand Agreement.Auditing the interest expense associated with the royalty agreement liability involved complex and subjective auditor judgment due to the estimation uncertainty involved in determining the probability-adjusted cash flow estimates of the Company’s potential future royalty payments. The Company’s effective interest rate calculation includes probability-adjusted revenue projections for which future royalties will be paid, which are sensitive to significant assumptions including the size of the addressable patient population, the anticipated pricing of the Company’s products, and the probability of successful development and commercialization.
How We Addressed the Matter in Our AuditTo test the interest expense associated with the royalty agreement liability, our audit procedures included, among others, testing the significant assumptions used to develop the estimates and evaluating the completeness and accuracy of the underlying data used by the Company in its effective interest rate calculation. For example, we compared the estimated size of the addressable patient population to a third-party prevalence study and government census data, and we compared the anticipated pricing information to a third-party market analysis. We compared the probability of achieving development and commercial success to studies published in medical journals evaluating clinical advancement and approval rates for similar products. We tested that the revenue projections were updated based on the most recent clinical trial data received in 2025 and recalculated the current year interest expense.

/s/Ernst & Young LLP

We have served as the Company’s auditor since 2018.

Philadelphia, Pennsylvania

March 31, 2026

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