Atara Biotherapeutics, Inc. — 4 Filings
584 4 filings on record
This page lists all 4 filings submitted to the SEC by Atara Biotherapeutics, Inc. (ATRA), sorted by most recent first. Each row links to the full filing on EdgarLookup. Atara Biotherapeutics, Inc. has filed 584 4 documents with the SEC since 2015. To view all SEC filings by Atara Biotherapeutics, Inc., see the full filings list.
All
10-K
10-K/A
10-Q
144
3
4
4/A
424B1
424B3
424B4
424B5
8-A12B
8-K
CERTNAS
CORRESP
CT ORDER
DEF 14A
DEFA14A
DEFR14A
DEL AM
DRS
DRS/A
DRSLTR
EFFECT
FWP
POS AM
POSASR
PRE 14A
S-1
S-1/A
S-1MEF
S-3
S-3ASR
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13D
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 4 | 4 | 0001193125-26-116060 | Mar 19, 2026 | Mar 17, 2026 |
| 4 | — | 0000905148-26-001225 | Mar 11, 2026 | Mar 9, 2026 |
| 4 | — | 0000905148-26-001224 | Mar 11, 2026 | Mar 9, 2026 |
| 4 | — | 0000905148-26-001144 | Mar 4, 2026 | Mar 2, 2026 |
| 4 | — | 0000905148-26-001143 | Mar 4, 2026 | Mar 2, 2026 |
| 4 | 4 | 0001193125-26-013358 | Jan 14, 2026 | Jan 12, 2026 |
| 4 | 4 | 0001193125-25-304018 | Dec 1, 2025 | Nov 28, 2025 |
| 4 | — | 0000905148-25-004140 | Nov 19, 2025 | Nov 17, 2025 |
| 4 | — | 0000905148-25-004141 | Nov 19, 2025 | Nov 17, 2025 |
| 4 | — | 0000905148-25-003070 | Aug 20, 2025 | Aug 18, 2025 |
| 4 | — | 0000905148-25-003069 | Aug 20, 2025 | Aug 18, 2025 |
| 4 | 4 | 0000950170-25-110310 | Aug 19, 2025 | Aug 15, 2025 |
| 4 | 4 | 0000950170-25-097087 | Jul 21, 2025 | Jul 17, 2025 |
| 4 | — | 0000905148-25-002141 | Jun 12, 2025 | Jun 10, 2025 |
| 4 | — | 0000905148-25-002142 | Jun 12, 2025 | Jun 10, 2025 |
| 4 | — | 0000905148-25-002140 | Jun 12, 2025 | Jun 10, 2025 |
| 4 | — | 0000905148-25-002138 | Jun 12, 2025 | Jun 10, 2025 |
| 4 | — | 0000905148-25-002137 | Jun 12, 2025 | Jun 10, 2025 |
| 4 | — | 0000905148-25-002139 | Jun 12, 2025 | Jun 10, 2025 |
| 4 | — | 0000905148-25-001865 | May 20, 2025 | May 16, 2025 |
| 4 | — | 0000905148-25-001866 | May 20, 2025 | May 16, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-050116 | May 16, 2025 | — |
| 4 | — | 0000905148-25-001058 | Apr 2, 2025 | Mar 31, 2025 |
| 4 | — | 0000905148-25-000865 | Mar 5, 2025 | Mar 3, 2025 |
| 4 | — | 0000905148-25-000863 | Mar 5, 2025 | Mar 3, 2025 |
| 4 | — | 0000905148-25-000864 | Mar 5, 2025 | Mar 3, 2025 |
| 4 | — | 0000905148-25-000245 | Jan 29, 2025 | Jan 27, 2025 |
| 4 | — | 0000905148-24-003241 | Nov 20, 2024 | Nov 18, 2024 |
| 4 | — | 0000905148-24-003242 | Nov 20, 2024 | Nov 18, 2024 |
| 4 | — | 0000905148-24-003243 | Nov 20, 2024 | Nov 18, 2024 |
| 4 | — | 0000905148-24-002545 | Sep 11, 2024 | Sep 9, 2024 |
| 4 | — | 0000905148-24-002305 | Aug 20, 2024 | Aug 16, 2024 |
| 4 | — | 0000905148-24-002302 | Aug 20, 2024 | Aug 16, 2024 |
| 4 | — | 0000905148-24-002306 | Aug 20, 2024 | Aug 16, 2024 |
| 4 | — | 0000905148-24-002303 | Aug 20, 2024 | Aug 16, 2024 |
| 4 | — | 0000905148-24-002304 | Aug 20, 2024 | Aug 16, 2024 |
| 4 | — | 0000905148-24-002244 | Aug 14, 2024 | Aug 12, 2024 |
| 4 | — | 0000905148-24-001561 | May 20, 2024 | May 16, 2024 |
| 4 | — | 0000905148-24-001560 | May 20, 2024 | May 16, 2024 |
| 4 | — | 0000905148-24-001557 | May 20, 2024 | May 16, 2024 |
| 4 | — | 0000905148-24-001558 | May 20, 2024 | May 16, 2024 |
| 4 | — | 0000905148-24-001559 | May 20, 2024 | May 16, 2024 |
| 4 | — | 0000905148-24-001060 | Apr 2, 2024 | Mar 31, 2024 |
| 4 | — | 0000905148-24-001056 | Apr 2, 2024 | Mar 31, 2024 |
| 4 | — | 0000905148-24-001057 | Apr 2, 2024 | Mar 31, 2024 |
| 4 | — | 0000905148-24-001058 | Apr 2, 2024 | Mar 31, 2024 |
| 4 | — | 0000905148-24-001059 | Apr 2, 2024 | Mar 31, 2024 |
| 4 | — | 0000905148-24-000909 | Mar 6, 2024 | Mar 4, 2024 |
| 4 | — | 0000905148-24-000910 | Mar 6, 2024 | Mar 4, 2024 |
| 4 | — | 0000905148-24-000911 | Mar 6, 2024 | Mar 4, 2024 |