Lawrence Corey - 12 Aug 2022 Form 4 Insider Report for Gritstone bio, Inc.

Role: Director
Signature: /s/ Rahsaan Thompson, Attorney-in-Fact for Lawrence Corey
Issuer symbol: N/A
Transactions as of: 12 Aug 2022
Net transactions value: $0
Form type: 4
Filing time: 16 Aug 2022, 16:21:01 UTC
Next filing: 21 Jun 2023
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	GRTS	Stock Option (Right to Buy)	Award	$0	+38,000		$0.000000	38,000	12 Aug 2022	Common Stock	38,000	$4.10	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 exercisable as to 1/36 of the total number of shares subject thereto on each monthly anniversary of the grant date such that the entire number of shares subject to the Stock Option are fully vested and exercisable on the third anniversary of the grant date, subject to Reporting Person's continuing service on the Issuer's board of directors through each vesting date.

Content

The Stock Option shall vest and become exercisable as to 1/36 of the total number of shares subject thereto on each monthly anniversary of the grant date such that the entire number of shares subject to the Stock Option are fully vested and exercisable on the third anniversary of the grant date, subject to Reporting Person's continuing service on the Issuer's board of directors through each vesting date.