Company: DAWN
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0001140361-25-013462
Chunk: 57

Company: Day One Biopharmaceuticals, Inc.
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 57
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 subject to the RSU are fully vested or vesting terminates pursuant to the terms of our 2021 Equity Incentive Plan. |

| (3) | Reflects unvested common stock received by our NEOs upon the conversion of incentive shares awarded to our NEOs prior to our initial public offering pursuant to our Incentive Share Plan (the “Incentive Shares”) in connection with our conversion from a limited liability company. |

| (4) | Reflects option awards: 1/4thof the option award shall vest on the one-year anniversary of the vesting commencement date and an additional 1/48thshall vest monthly thereafter, until the options subject to the option award are fully vested or vesting terminates pursuant to the terms of our 2022 Equity Inducement Plan. |

| (5) | Reflects shares underlying RSU awards: 1/4thof the shares subject to the RSU shall vest on November 15, 2023 and an additional 1/16thof the shares subject to the RSU shall vest on each February 15, May 15, August 15 and November 15 thereafter, until the shares subject to the RSU are fully vested or vesting terminates pursuant to the terms of our 2022 Equity Inducement Plan. |

| (6) | Values in this column are calculated using a price per share of $12.67, the closing price of our common stock on December 31, 2024, the last trading day of the fiscal year, as reported on the Nasdaq Global Market |

| (7) | Dr. Blackman retired from the Company effective January 3, 2025 and is no longer considered an executive officer of the Company. |

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TABLE OF CONTENTS

The following table provides information on stock options exercised and stock awards vested for each of our NEOs during the year ended December 31, 2024. 2024 Stock Option Exercises and Stock Vested Table

|                    |     | Option Awards |     |             |     |     Stock Awards |     |             |
| Name               |     | Number of     
 shares        
 acquired on   
 exercise      
 (#)           |     | Value       
 realized on 
 exercise    
 ($)         |     | Number of shares 
      acquired on 
          vesting 
              (#) |     |       Value 
 realized on 
     vesting 
      ($)(1) |
| Jeremy Bender      |     | —             |     |