Clare Fisher - Jan 1, 2022 Form 4 Insider Report for Gritstone bio, Inc. (GRTS)

Role: Director
Signature: /s/ Rahsaan Thompson, Attorney-in-Fact for Clare Fisher
Stock symbol: GRTS
Transactions as of: Jan 1, 2022
Transactions value $: $0
Form type: 4
Date filed: 1/4/2022, 08:10 PM
Next filing: Jun 22, 2022

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	Jan 1, 2022	Common Stock	38K	$12.86	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The stock option shall vest and become fully exercisable with respect to 1/36th of the entire number of shares subject to the stock option on each monthly anniversary of the grant date over a 36 month period, so that the entire number of shares shall vest and become exercisable on January 1, 2025, subject to the Reporting Person's continuing status as a service provider through each monthly vesting date.

Content

The stock option shall vest and become fully exercisable with respect to 1/36th of the entire number of shares subject to the stock option on each monthly anniversary of the grant date over a 36 month period, so that the entire number of shares shall vest and become exercisable on January 1, 2025, subject to the Reporting Person's continuing status as a service provider through each monthly vesting date.