Utpal Koppikar - 16 Nov 2022 Form 4 Insider Report for Atara Biotherapeutics, Inc. (ATRA)

Role: Chief Financial Officer
Signature: /s/ Jeff Kiekhofer, Attorney-in-Fact for Utpal Koppikar
Issuer symbol: ATRA
Transactions as of: 16 Nov 2022
Net transactions value: -$28,086
Form type: 4
Filing time: 18 Nov 2022, 19:13:28 UTC
Previous filing: 18 Aug 2022
Next filing: 09 Feb 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATRA	Common Stock	Sale	$23,222	-5,172	-2.6%	$4.49	192,417	16 Nov 2022	Direct	F1, F2
transaction	ATRA	Common Stock	Sale	$4,864	-1,083	-0.56%	$4.49	191,334	16 Nov 2022	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Shares sold pursuant to a 10b5-1 arrangement to satisfy tax obligations in connection with the vesting of previously granted restricted stock units.
F2	The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on November 16, 2022 and November 17, 2022 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employee.

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney