James Cho - 27 Jan 2021 Form 3 Insider Report for Gritstone bio, Inc.

Role: Chief Accounting Officer
Signature: /s/ Rahsaan Thompson, Attorney-in-Fact for James Cho
Issuer symbol: N/A
Transactions as of: 27 Jan 2021
Net transactions value: $0
Form type: 3
Filing time: 19 Nov 2021, 15:11:23 UTC
Next filing: 19 Nov 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	GRTS	Common Stock						33,436	27 Jan 2021	Direct	F1

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
holding	GRTS	Stock Option (Right to Buy)							27 Jan 2021	Common Stock	40,000	$7.14	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Includes 30,200 Restricted Stock Units ("RSUs") which are subject to vesting. Each RSU represents a contingent right to receive one share of common stock of the Issuer.
F2	The stock option vests and becomes exercisable with respect to 25% of the total number of shares on November 13, 2020. The remaining shares vest and become exercisable in equal monthly installments over the following 36 months.