Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000905148-25-002137
Filing Date
2025-06-12
Accepted
2025-06-12 20:36:38
Documents
1
Period of Report
2025-06-10

Document Format Files

Seq Description Document Type Size
1 form4.html 4  
1 form4.xml 4 3237
  Complete submission text file 0000905148-25-002137.txt   4667
Mailing Address C/O AMAG PHARMACEUTICALS, INC. 1100 WINTER STREET WALTHAM MA 02451
Business Address
HEIDEN WILLIAM K (Reporting) CIK: 0001214939 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-36548 | Film No.: 251044526

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)