Vassiliki Economides - Apr 4, 2025 Form 4 Insider Report for Gritstone bio, Inc. (GRTS)

Role
EVP, CHIEF FINANCIAL OFFICER
Signature
/s/ Vassiliki Economides
Stock symbol
GRTS
Transactions as of
Apr 4, 2025
Transactions value $
$0
Form type
4
Date filed
4/8/2025, 09:00 PM
Previous filing
Dec 20, 2024
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GRTS Common Stock Other $0 -250K -100% $0.00 0 Apr 4, 2025 Direct F1, F2

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) Other $0 -215K -100% $0.00 0 Apr 4, 2025 Common Stock 215K $2.46 Direct F1, F3
transaction GRTS Stock Option (Right to Buy) Other $0 -215K -100% $0.00 0 Apr 4, 2025 Common Stock 215K $0.75 Direct F1, F4
transaction GRTS Stock Option (Right to Buy) Other $0 -138K -100% $0.00 0 Apr 4, 2025 Common Stock 138K $5.46 Direct F1, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Vassiliki Economides is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 Pursuant to the Issuer's Second Modified Plan of Reorganization pursuant to Chapter 11 of the Bankruptcy Code, which was confirmed by the United States Bankruptcy Court for the District of Delaware on April 3, 2025 and became effective on April 4, 2025, each share of the Issuer's common stock and options to purchase the Issuer's common stock outstanding prior to the Issuer's emergence from bankruptcy were cancelled for no value.
F2 Includes 237,058 unvested restricted stock units.
F3 The option vests as to 1/24th of the total grant monthly beginning February 1, 2024 until such time as the option is 100% vested, subject to the continued service of the Reporting Person on each vesting date.
F4 The option vests as to 1/2 of the total grant on September 30, 2024, with the remainder of grant vesting on September 30, 2025, subject to the continued service of the Reporting Person on each vesting date.
F5 One forty-eighth (1/48th) of the shares initially subject to the option will vest on each monthly anniversary measured from January 31, 2022 (the "Vesting Commencement Date"), so that 100% of the shares subject to the option will be fully vested and exercisable as of the fourth anniversary of the Vesting Commencement Date, subject to the Reporting Person's continued service through each vesting date.