Charles N. York II - Jan 18, 2022 Form 4 Insider Report for Day One Biopharmaceuticals, Inc. (DAWN)

Role: COO, CFO and Secretary
Signature: /s/ Charles N. York II
Stock symbol: DAWN
Transactions as of: Jan 18, 2022
Transactions value $: $0
Form type: 4
Date filed: 1/20/2022, 06:30 PM
Previous filing: May 26, 2021
Next filing: Jul 6, 2022
SEC: View on sec.gov

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	+151K		$0.00	151K	Jan 18, 2022	Common Stock	151K	$14.26	Direct	F1
transaction	DAWN	Restricted Stock Units	Award	$0	+22K		$0.00	22K	Jan 18, 2022	Common Stock	22K		Direct	F2, F3

Showing 1 to 2 of 2 entries

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

Explanation of Responses:

Id	Content
F1	The option vests as to 2.0833% of the total shares monthly, with 100% of the total shares vested on January 18, 2026, 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.
F3	The RSUs will vest as to 1/12 of the total award in quarterly installments on February 15th, May 15th, August 15th, and November 15th, subject to the Reporting Person's continued service to the Issuer on each vesting date.