Corvus Pharmaceuticals, Inc.

To the Board of Directors and Stockholders of Corvus Pharmaceuticals, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Corvus Pharmaceuticals, Inc. and its subsidiaries (the "Company") as of December 31, 2025 and 2024, and the related consolidated statements of operations and comprehensive loss, of changes in stockholders’ equity and of cash flows for each of the three years in the period ended December 31, 2025, including 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 as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025 in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated 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 of these consolidated financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated 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 consolidated 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 consolidated 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 consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters 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.

Clinical Trial Accruals

As described in Notes 2 and 8 to the consolidated financial statements, the Company recorded $3.6 million in clinical trial accruals as of December 31, 2025. Management applies significant judgment in developing estimates for clinical trial accruals based on assumptions related to the vendors’ progress towards completion. Management estimates the vendors’ progress towards completion using data such as clinical site activations,

patient enrollment or information provided to the Company by its vendors regarding actual costs incurred. Management determines accrual estimates through reports from and discussions with applicable personnel and outside service providers as to the progress or stage of completion, or the services completed.

The principal considerations for our determination that performing procedures relating to clinical trial accruals is a critical audit matter are (i) the significant judgment by management in estimating the clinical trial accruals and (ii) a high degree of auditor judgment, subjectivity, and effort in performing procedures and evaluating management’s significant assumption related to the vendors’ progress towards completion of clinical trials.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included, among others (i) testing management’s process for estimating the clinical trial accruals; (ii) evaluating the appropriateness of the method used by management to develop the estimate; (iii) testing the completeness and accuracy of data used to develop the estimate; and (iv) evaluating the reasonableness of the significant assumption related to the vendors’ progress towards completion of clinical trials. Evaluating management’s assumption related to the vendors’ progress towards completion of clinical trials involved (i) obtaining and examining contract terms on a test basis to evaluate the completeness and consistency of the costs in the contract with the costs used in developing the estimate; (ii) verifying patient visits on a test basis; and (iii) considering whether this assumption was consistent with evidence obtained in other areas of the audit.

/s/PricewaterhouseCoopers LLP

San Jose, California

March 12, 2026

We have served as the Company’s auditor since 2015.