ATARA BIOTHERAPEUTICS, INC.

ATRA ·Healthcare, Drug Manufacturers - General, United States
Financial Statements SEC Filings

SEC Filings

Form Filed Description
8-K May 12, 2026 8-K
SCHEDULE 13D/A May 11, 2026
4 May 11, 2026 4
4 May 11, 2026
3 May 11, 2026
SCHEDULE 13G May 8, 2026
144 May 7, 2026
SCHEDULE 13G/A May 7, 2026
8-K May 7, 2026 8-K
8-K May 1, 2026 8-K
DEF 14A Apr 24, 2026 DEF 14A
DEFA14A Apr 24, 2026 DEFA14A
EFFECT Mar 25, 2026
424B3 Mar 25, 2026 424B3
CORRESP Mar 23, 2026
UPLOAD Mar 20, 2026
4 Mar 19, 2026 4
S-3 Mar 17, 2026 S-3
424B5 Mar 16, 2026 424B5
10-K Mar 16, 2026 10-K
8-K Mar 16, 2026 8-K
8-K Mar 12, 2026 8-K
4 Mar 11, 2026
4 Mar 11, 2026
4 Mar 4, 2026
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