Shefali Agarwal - Jun 1, 2021 Form 4 Insider Report for Gritstone bio, Inc. (GRTS)

Role: Director
Signature: /s/ Rahsaan Thompson, Attorney-in-Fact for Shefali Agarwal
Stock symbol: GRTS
Transactions as of: Jun 1, 2021
Transactions value $: $0
Form type: 4
Date filed: 11/19/2021, 04:48 PM
Next filing: Jun 4, 2021

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	GRTS	Stock Option (Right to Buy)	Award	$0	+38K		$0.00	38K	Jun 1, 2021	Common Stock	38K	$9.48	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Shares subject to the stock option vest and become exercisable on a monthly basis in equal monthly installments over a 36 month period commencing on the grant date, so that all shares subject to the stock option will become fully vested and exercisable on the third anniversary of the grant date, subject to the Reporting Person remaining a service provider through each monthly anniversary of the grant date.

Content

Shares subject to the stock option vest and become exercisable on a monthly basis in equal monthly installments over a 36 month period commencing on the grant date, so that all shares subject to the stock option will become fully vested and exercisable on the third anniversary of the grant date, subject to the Reporting Person remaining a service provider through each monthly anniversary of the grant date.