William K. Heiden - 10 Jun 2025 Form 4 Insider Report for Atara Biotherapeutics, Inc. (ATRA)

Role
Director
Signature
/s/ John Chao, Attorney-in-Fact for William Heiden
Issuer symbol
ATRA
Transactions as of
10 Jun 2025
Net transactions value
$0
Form type
4
Filing time
12 Jun 2025, 20:36:38 UTC
Previous filing
22 May 2025
Next filing
21 Aug 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
HEIDEN WILLIAM K Director C/O ATARA BIOTHERAPEUTICS, INC., 1280 RANCHO CONEJO BOULEVARD, THOUSAND OAKS /s/ John Chao, Attorney-in-Fact for William Heiden 12 Jun 2025 0001214939

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ATRA Common Stock Award $0 +7,828 +55% $0.000000 22,188 10 Jun 2025 Direct F1, 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 10, 2026 or the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service.
F2 This amount reflects the 1:25 reverse stock split effected by the Issuer on June 20, 2024.