Home > Insider Trading > Filing (0001415889-24-009146)

Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1845337	Day One Biopharmaceuticals Inc.	DAWN	Pharmaceutical Preparations (2834)	832415215

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1863676	C. Samuel Blackman	2000 Sierra Point Parkway, Suite 501 Brisbane CA 94005	Head Of R&D	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2024-03-25	10,000	$16.01	1,184,662	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	1,000,000	Indirect	See footnote

Footnotes

The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on October 10, 2023.
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.00 to $16.04 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
The Reporting Person is the sole manager, and has shared voting and dispositive power with his wife as members. The Reporting Person continues to report beneficial ownership of all of the Issuer's Common Stock held by the 2021 Blackman Family LLC but disclaims beneficial ownership except to the extent of his and his wife's pecuniary interest therein.