Atara Biotherapeutics, Inc.

Symbol: ATRA on Nasdaq
Entity: Company
Industry: Biological Products, (No Disgnostic Substances) (Office Of Life Sciences)
Business address: 1280 Rancho Conejo Blvd, 91320 Thousand Oaks, CA
Phone: 805-623-4211
State of incorporation: DE
Fiscal year end: December 31
Category: Non-accelerated filer
Smaller reporting company
All SEC filings: View on sec.gov

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Atara Biotherapeutics, Inc. has filed 1,042 SEC EDGAR filings since 4/10/2014

Latest Filings

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
SCHEDULE 13D	Open Document	Open Filing		May 23, 2025		005-88393
3	Open Document	Open Filing	OWNERSHIP DOCUMENT	May 23, 2025	May 16, 2025
3	Open Document	Open Filing	OWNERSHIP DOCUMENT	May 23, 2025	May 16, 2025
3	Open Document	Open Filing	3	May 21, 2025	May 16, 2025
SCHEDULE 13D	Open Document	Open Filing		May 21, 2025		005-88393
4	Open Document	Open Filing		May 20, 2025	May 16, 2025
4	Open Document	Open Filing		May 20, 2025	May 16, 2025
144	Open Document	Open Filing		May 16, 2025		001-36548
144	Open Document	Open Filing		May 16, 2025		001-36548
SCHEDULE 13D/A	Open Document	Open Filing		May 16, 2025		005-88393
4	Open Document	Open Filing	OWNERSHIP DOCUMENT	May 16, 2025	May 16, 2025
8-K	Open Document \| Data	Open Filing	8-K	May 16, 2025	May 14, 2025	001-36548
SCHEDULE 13G/A	Open Document	Open Filing		May 15, 2025		005-88393
424B5	Open Document	Open Filing	424B5	May 15, 2025		333-275256
10-Q	Open Document \| Data	Open Filing	10-Q	May 15, 2025	Mar 31, 2025	001-36548
8-K	Open Document \| Data	Open Filing	8-K	May 15, 2025	May 14, 2025	001-36548
8-K	Open Document \| Data	Open Filing	8-K	May 12, 2025	May 12, 2025	001-36548
8-K	Open Document \| Data	Open Filing	8-K	May 6, 2025	May 5, 2025	001-36548
DEFA14A	Open Document	Open Filing	DEFA14A	Apr 28, 2025		001-36548
DEF 14A	Open Document \| Data	Open Filing	DEF 14A	Apr 28, 2025	Jun 10, 2025	001-36548
3	Open Document	Open Filing		Apr 10, 2025	Mar 31, 2025
8-K	Open Document \| Data	Open Filing	8-K	Apr 4, 2025	Mar 31, 2025	001-36548
4	Open Document	Open Filing		Apr 2, 2025	Mar 31, 2025
8-K	Open Document \| Data	Open Filing	8-K	Mar 31, 2025	Mar 25, 2025	001-36548
10-K	Open Document \| Data	Open Filing	10-K	Mar 7, 2025	Dec 31, 2024	001-36548
8-K	Open Document \| Data	Open Filing	8-K	Mar 7, 2025	Mar 7, 2025	001-36548
4	Open Document	Open Filing		Mar 5, 2025	Mar 3, 2025
4	Open Document	Open Filing		Mar 5, 2025	Mar 3, 2025
4	Open Document	Open Filing		Mar 5, 2025	Mar 3, 2025
144	Open Document	Open Filing		Mar 3, 2025		001-36548
144	Open Document	Open Filing		Mar 3, 2025		001-36548
144	Open Document	Open Filing		Mar 3, 2025		001-36548
8-K	Open Document \| Data	Open Filing	8-K	Mar 3, 2025	Mar 3, 2025	001-36548
SCHEDULE 13G	Open Document	Open Filing		Feb 6, 2025		005-88393
4	Open Document	Open Filing		Jan 29, 2025	Jan 27, 2025
8-K	Open Document \| Data	Open Filing	8-K	Jan 27, 2025	Jan 27, 2025	001-36548
8-K	Open Document \| Data	Open Filing	8-K	Jan 21, 2025	Jan 21, 2025	001-36548
S-8	Open Document	Open Filing	S-8	Jan 17, 2025		333-284338
8-K	Open Document \| Data	Open Filing	8-K	Jan 16, 2025	Jan 16, 2025	001-36548
8-K	Open Document \| Data	Open Filing	8-K	Dec 23, 2024	Dec 20, 2024	001-36548
4	Open Document	Open Filing		Nov 20, 2024	Nov 18, 2024
4	Open Document	Open Filing		Nov 20, 2024	Nov 18, 2024
4	Open Document	Open Filing		Nov 20, 2024	Nov 18, 2024
144	Open Document	Open Filing		Nov 18, 2024		001-36548
144	Open Document	Open Filing		Nov 18, 2024		001-36548
144	Open Document	Open Filing		Nov 18, 2024		001-36548
144	Open Document	Open Filing		Nov 18, 2024		001-36548
SC 13G/A	Open Document	Open Filing		Nov 14, 2024		005-88393
SC 13G/A	Open Document	Open Filing	SC 13G/A	Nov 14, 2024		005-88393
10-Q	Open Document \| Data	Open Filing	10-Q	Nov 12, 2024	Sep 30, 2024	001-36548

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