Document and Entity Information
Document and Entity Information | Aug. 16, 2021 |
Cover [Abstract] | |
Amendment Flag | false |
Entity Central Index Key | 0001845337 |
Document Type | 8-K |
Document Period End Date | Aug. 16, 2021 |
Entity Registrant Name | DAY ONE BIOPHARMACEUTICALS, INC. |
Entity Incorporation State Country Code | DE |
Entity File Number | 001-40431 |
Entity Tax Identification Number | 83-2415215 |
Entity Address, Address Line One | 395 Oyster Point Blvd. |
Entity Address, Address Line Two | Suite 217 |
Entity Address, City or Town | South San Francisco |
Entity Address, State or Province | CA |
Entity Address, Postal Zip Code | 94080 |
City Area Code | (650) |
Local Phone Number | 484-0899 |
Written Communications | false |
Soliciting Material | false |
Pre Commencement Tender Offer | false |
Pre Commencement Issuer Tender Offer | false |
Security 12b Title | Common Stock, $0.0001 Par Value Per Share |
Trading Symbol | DAWN |
Security Exchange Name | NASDAQ |
Entity Emerging Growth Company | true |
Entity Ex Transition Period | false |