Adam Dubow - 05 Jan 2024 Form 4 Insider Report for Day One Biopharmaceuticals, Inc. (DAWN)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	DAWN	Stock Option (right to buy Common Stock)	Award	$0	+90,000		$0.000000	90,000	05 Jan 2024	Common Stock	90,000	$14.44	Direct	F1
transaction	DAWN	Restricted Stock Units	Award	$0	+59,000		$0.000000	59,000	05 Jan 2024	Common Stock	59,000		Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	The option vests as to 1/48th of the total shares monthly, commencing February 5, 2024, subject to the Reporting Person's provision of service to the Issuer on each vesting date.
F2	Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration.
F3	The RSUs will vest as to 1/16th of the total award in quarterly installments on February 15, May 15, August 15 and November 15, subject to the Reporting Person's provision of service to the Issuer on each vesting date.