Andrew R. Allen - 02 Feb 2023 Form 4 Insider Report for Gritstone bio, Inc. (GRTS)

Role: President and CEO, Director
Signature: /s/ Vassiliki (Celia) Economides, Attorney-in-Fact for Andrew R. Allen
Issuer symbol: GRTS
Transactions as of: 02 Feb 2023
Transactions value $: $0
Form type: 4
Date filed: 06 Feb 2023, 16:26
Previous filing: 19 Dec 2022
Next filing: 01 Jun 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GRTS	Common Stock	Award	$0	+739K	+624.83%	$0.00	857K	02 Feb 2023	Direct	F1, F2
holding	GRTS	Common Stock						1.45M	02 Feb 2023	See footnote	F3

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

Explanation of Responses:

Id	Content
F1	Represents Restricted Stock Units ("RSUs") 499,241 of which vest semi-annually over four years and 239,309 of which vest annually over two years from February 1, 2023, in each case, subject to the Reporting Person's continuous service to the Issuer on each such date. Each RSU represents a contingent right to receive one share of common stock of the Issuer.
F2	Includes 738,550 RSUs which are subject to vesting.
F3	The shares are held in the name of the Reporting Person's revocable trust of which the Reporting Person is a co-trustee. The Reporting person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.