Erin Jones - Oct 1, 2021 Form 4/A - Amendment Insider Report for Gritstone bio, Inc. (GRTS)

Role
Executive Vice President, Global Regulatory Affairs and Quality
Signature
/s/ Rahsaan Thompson, Attorney-in-Fact for Erin Jones
Stock symbol
GRTS
Transactions as of
Oct 1, 2021
Transactions value $
-$20,700
Form type
4/A - Amendment
Date filed
12/3/2021, 03:43 PM
Date Of Original Report
Oct 5, 2021
Previous filing
Nov 19, 2021
Next filing
Dec 3, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GRTS Common Stock Options Exercise $345 +1K +2.18% $0.35* 46.9K Oct 1, 2021 Direct F1, F2
transaction GRTS Common Stock Sale -$10.7K -1K -2.13% $10.68* 45.9K Oct 1, 2021 Direct F1, F2
transaction GRTS Common Stock Options Exercise $345 +1K +2.18% $0.35* 46.9K Oct 4, 2021 Direct F1, F2
transaction GRTS Common Stock Sale -$10.7K -1K -2.13% $10.71* 45.9K Oct 4, 2021 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) Options Exercise $0 -1K -2.78% $0.00 35K Oct 1, 2021 Common Stock 1K $0.35 Direct F1, F3
transaction GRTS Stock Option (Right to Buy) Options Exercise $0 -1K -2.86% $0.00 34K Oct 4, 2021 Common Stock 1K $0.35 Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The transaction was made pursuant to a 10b5-1 plan in effect at the time of the transaction.
F2 Includes 25,900 Restricted Stock Units which are subject to vesting.
F3 Fully exercisable.

Remarks:

Executive Vice President, Global Regulatory Affairs and Quality