Company: DAWN
Filing Date: 2025-03-06
Form Type: 10-K/A
Source: 0000950170-25-034878
Chunk: 10

Company: Day One Biopharmaceuticals, Inc.
Filing Date: 2025-03-06
Form: 10-K/A
Chunk 10
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-6

Day One Biopharmaceuticals, Inc.

Statements of Comprehensive Loss

(in thousands)</div>

|                                                         |     | Year Ended December 31, 
 2024                    |         |   |     | 2023 |          |   |     | 2022 |          |   |
|:--------------------------------------------------------|:----|:------------------------|--------:|:--|:----|:-----|---------:|:--|:----|:-----|:---------|:--|
| Net loss                                                |     | $                       | (95,496 | ) |     | $    | (188,917 | ) |     | $    | (142,181 | ) |
| Other comprehensive income:                             |     |                         |         |   |     |      |          |   |     |      |          |   |
| Unrealized gain (loss) on available-for-sale securities |     |                         |      75 |   |     |      |       80 |   |     |      | (71      | ) |
| Total comprehensive loss                                |     | $                       | (95,421 | ) |     | $    | (188,837 | ) |     | $    | (142,252 | ) |

<div align='center'>The accompanying notes are an integral part of these financial statements.

F-7

Day One Biopharmaceuticals, Inc.

Statements of Stockholders’ Equity

(in thousands, except share amounts)</div>

|                                                                                                                     |     | Common Stock 
 Shares       |             |   |     | Amount |    |     | Additional 
 Paid-In    
 Capital    |           |     | Accumulated Other  
 Comprehensive Loss |     |   |     | Accumulated 
 Deficit     |          |   |     | Stockholders'   
 Equity/Members' 
 (Deficit)       |          |   |
|:--------------------------------------------------------------------------------------------------------------------|:----|:-------------|------------:|:--|:----|:-------|---:|:----|:-----------|----------:|:----|:-------------------|----:|:--|:----|:------------|:---------|:--|:----|:----------------|---------:|:--|
| Balance at December 31, 2021                                                                                        |     |              |  61,952,292 |   |     | $      |  6 |     | $          |   408,629 |     |