Company: DAWN
Filing Date: 2025-02-25
Form Type: 10-K
Source: 0000950170-25-026654
Chunk: 13

Company: Day One Biopharmaceuticals, Inc.
Filing Date: 2025-02-25
Form: 10-K
Item: Item 16
Chunk 13
---
 matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Accrued Clinical Trial Expenses

As described in Notes 2 and 4 to the financial statements, the Company records accrued liabilities for estimated costs of clinical trials conducted by third-party service providers. As disclosed by management, these costs are accrued based on factors such as estimates of the work completed and in accordance with terms established with third-party service providers under the service agreements. Management makes judgments and estimates in determining the accrued liabilities for estimated costs of clinical trials each reporting period and monitors patient enrollment levels and related activities to the extent possible through internal reviews, correspondence with clinical research organizations (“CROs”) and review of contractual terms. Within accrued expenses and other current liabilities, management has recorded $13.1 million of accrued research and development expenses as of December 31, 2024, a portion of which relates to accrued clinical trial expenses. 

The principal considerations for our determination that performing procedures relating to accrued clinical trial expenses is a critical audit matter are (i) the significant judgment by management when developing the estimate of the accrued clinical trial expenses; and (ii) a high degree of auditor judgment and effort in performing procedures related to management’s estimate of the accrued clinical trial expenses. 

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the financial statements. These procedures included testing the effectiveness of controls relating to management’s estimate of accrued clinical trial expenses, including controls over the estimates of the work completed in accordance with terms established with third-party service providers under the service agreements. These procedures also included, among others, (i) testing management’s process for estimating accrued clinical trial expenses, (ii) evaluating the appropriateness of 

F-3

the method used by management to develop the estimate, (iii) testing the completeness and accuracy of the data used by management to develop the estimate related to invoicing to date under the contracts and costs incurred for services received, and (iv) evaluating the reasonableness of the estimated costs incurred for the services which have not been invoiced by tracing to underlying supporting documentation, such as underlying contracts, invoices and information received from certain third party service providers, where applicable.

/s/ PricewaterhouseCoopers LLP

Los Angeles, California

February 25, 2025

We have served as the Company’s auditor since 2023.

F-4

Report of Ernst & Young LLP, Independent Registered Public Accounting Firm

To the Stockholders