Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001104659-25-050116
Filing Date
2025-05-16
Accepted
2025-05-16 18:26:21
Documents
1
Period of Report
2025-05-16

Document Format Files

Seq Description Document Type Size
1 OWNERSHIP DOCUMENT tm2515303-1_4seq1.html 4  
1 OWNERSHIP DOCUMENT tm2515303-1_4seq1.xml 4 11077
  Complete submission text file 0001104659-25-050116.txt   13719
Mailing Address 1280 RANCHO CONEJO BLVD THOUSAND OAKS CA 91320
Business Address 1280 RANCHO CONEJO BLVD THOUSAND OAKS CA 91320 805-623-4211
Atara Biotherapeutics, Inc. (Issuer) CIK: 0001604464 (see all company filings)

EIN.: 460920988 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2836 Biological Products, (No Diagnostic Substances)
(CF Office: 03 Life Sciences)

Mailing Address 30 GREYLOCK ROAD WELLESLEY MA 02481
Business Address
Ciongoli Gregory Austin (Reporting) CIK: 0002023732 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-36548 | Film No.: 25961042

Mailing Address 30 GREYLOCK ROAD WELLESLEY MA 02481
Business Address 30 GREYLOCK ROAD WELLESLEY MA 02481 781-235-7974
Adiumentum Capital Fund I LP (Reporting) CIK: 0002023734 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-36548 | Film No.: 25961044

Mailing Address 30 GREYLOCK ROAD WELLESLEY MA 02481
Business Address 30 GREYLOCK ROAD WELLESLEY MA 02481 781-235-7974
Adiumentum Capital Fund I GP LLC (Reporting) CIK: 0002023736 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-36548 | Film No.: 25961043