Amar Murugan - 01 Mar 2022 Form 4 Insider Report for Atara Biotherapeutics, Inc. (ATRA)

Role
SVP, GC & Secretary
Signature
/s/ David Tucker, Attorney-in-Fact for Amar Murugan
Issuer symbol
ATRA
Transactions as of
01 Mar 2022
Net transactions value
-$25,400
Form type
4
Filing time
03 Mar 2022, 18:02:30 UTC
Previous filing
18 Nov 2021
Next filing
19 May 2022
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ATRA Common Stock Award $0 +51,814 +59% $0.000000 139,535 01 Mar 2022 Direct F1, F5
transaction ATRA Common Stock Sale $14,441 -1,465 -1% $9.86 138,070 01 Mar 2022 Direct F2, F3, F5
transaction ATRA Common Stock Sale $10,960 -1,112 -0.81% $9.86 136,958 01 Mar 2022 Direct F2, F3, F5

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 ATRA Employee Stock Option (Right to Buy) Award $0 +97,398 $0.000000 97,398 01 Mar 2022 Common Stock 97,398 $10.21 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These restricted stock units vest in 16 equal quarterly installments on each Company Quarterly Vesting Date (as defined below), with the initial installment vesting on May 15, 2022, subject to the reporting person's continuous service. Company Quarterly Vesting Date means March 1, May 15, August 15 and November 15 of each year.
F2 Shares sold pursuant to a 10b5-1 arrangement to satisfy tax obligations in connection with the vesting of previously granted restricted stock units.
F3 The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on March 1, 2022 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employee.
F4 1/48th of the shares subject to the stock option vest and become exercisable each month with the initial installment vesting on April 1, 2022, subject to the reporting person's continuous service.
F5 Includes 181 shares purchased under the Issuer's Employee Stock Purchase Plan on November 30, 2021.