William K. Heiden - Jun 8, 2021 Form 4 Insider Report for Atara Biotherapeutics, Inc. (ATRA)

Role: Director
Signature: /s/ David Tucker, Attorney-in-Fact
Stock symbol: ATRA
Transactions as of: Jun 8, 2021
Transactions value $: $0
Form type: 4
Date filed: 6/9/2021, 07:14 PM
Next filing: May 24, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATRA	Common Stock	Award	$0	+11K	+53.66%	$0.00	31.5K	Jun 8, 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
transaction	ATRA	Non-Qualified Stock Option (Right to Buy)	Award	$0	+17.5K		$0.00	17.5K	Jun 8, 2021	Common Stock	17.5K	$13.80	Direct	F2

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

Explanation of Responses:

Id	Content
F1	These restricted stock units shall vest on the earlier of June 8, 2022 or the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service.
F2	The option shall vest on the earlier of June 8, 2022 or the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service.