Employer with a benefit plan ยท SEC filer
ATARA BIOTHERAPEUTICS, INC.
1280 RANCHO CONEJO BOULEVARD, THOUSAND OAKS, CA 91320
EIN
46-0920988
SEC CIK
0001604464
SEC · 2026-09-04
Industry (SIC)
Biological Products, (No Diagnostic Substances) (2836)
SEC · 2026-09-04
State of incorporation
DE
SEC · 2026-09-04
Ticker
ATRA
SEC · 2026-09-04
Latest SEC filing
4 2026-09-04
SEC · 2026-09-04
Benefit plan 1, 2024 filing
ATARA BIO 401(K) PLAN
DOL · 2025-10-14
Participants (start of year)
547
DOL · 2025-10-14
Plan features
code 2E2F2G2J2K2S2T3D
DOL · 2025-10-14
Plan type
Single-employer plan
DOL · 2025-10-14
Business code (NAICS)
325410
DOL · 2025-10-14
Benefit plan 501, 2024 filing
ATARA BIOTHERAPEUTICS, INC. HEALTH & WELFARE PLAN
DOL · 2025-05-28
Participants (start of year)
352
DOL · 2025-05-28
Plan features
code 4A4B4D4E4F4H4L
DOL · 2025-05-28
Plan type
Single-employer plan
DOL · 2025-05-28