Atara Biotherapeutics, Inc. — DEF 14A Filings
11 DEF 14A filings on record
This page lists all DEF 14A 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 11 DEF 14A 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 |
|---|---|---|---|---|
| DEF 14A | DEF 14A | 0000950170-25-059322 | Apr 28, 2025 | Jun 10, 2025 |
| DEF 14A | DEF 14A | 0000950170-24-049147 | Apr 26, 2024 | Jun 10, 2024 |
| DEF 14A | DEF 14A | 0000950170-23-012204 | Apr 7, 2023 | — |
| DEF 14A | DEF 14A | 0001564590-22-016087 | Apr 27, 2022 | Jun 23, 2022 |
| DEF 14A | DEF 14A | 0001564590-21-020128 | Apr 22, 2021 | Jun 8, 2021 |
| DEF 14A | DEF 14A | 0001564590-20-017935 | Apr 22, 2020 | Jun 16, 2020 |
| DEF 14A | DEF 14A | 0001193125-19-129473 | Apr 30, 2019 | Jun 27, 2019 |
| DEF 14A | DEF 14A | 0001564590-18-009305 | Apr 26, 2018 | Jun 14, 2018 |
| DEF 14A | DEF 14A | 0001564590-17-007065 | Apr 25, 2017 | Jun 8, 2017 |
| DEF 14A | DEF 14A | 0001564590-16-017048 | Apr 29, 2016 | Jun 23, 2016 |
| DEF 14A | DEF 14A | 0001564590-15-002954 | Apr 29, 2015 | Jun 25, 2015 |