Layoffs at Atara Biotherapeutics
- Layoff events
- 5
- verified and sourced
- Roles reported
- At least 75
- events with no figure are not in this number
- Announced between
- Jan 2024 to Oct 2025
- Reported by
- U.S. SEC, U.S. Securities and Exchange Commission, California Employment Development Department, and Fierce Biotech
This page records what we could verify and source. It is not a complete record of every job cut at Atara Biotherapeutics: a layoff nobody published and nobody sent us is a layoff that is not on this page.
| Company | What happened | Roles reported | Share of staff | Where | Announced | Sources |
|---|---|---|---|---|---|---|
| Atara Biotherapeutics |
Restructuring
Atara Biotherapeutics announced a further workforce reduction affecting approximately 29% of its current employees while retaining a small team for remaining priorities. |
Not known | 29% | Company-wide |
1 source for Atara Biotherapeutics |
|
| Atara Biotherapeutics |
Restructuring
Atara Biotherapeutics announced another workforce reduction affecting approximately 30% of its then-current employees while retaining personnel needed for its remaining strategic priorities. |
Not known | 30% | Company-wide |
1 source for Atara Biotherapeutics |
|
| Atara Biotherapeutics |
Pipeline setback
Atara Biotherapeutics announced a further workforce reduction after discontinuing its CAR-T development programs; a later California WARN notice quantified the affected Newbury Park workforce at 31. |
31 | Not known | 1280 Rancho Conejo Boulevard, Newbury Park, United States |
2 sources for Atara Biotherapeutics |
|
| Atara Biotherapeutics |
Restructuring
Atara Biotherapeutics announced a workforce reduction affecting approximately 50% of its then-current employees. |
Not known | 50% | Company-wide |
1 source for Atara Biotherapeutics |
|
| Atara Biotherapeutics |
Pipeline setback
Atara Biotherapeutics announced a strategic workforce reduction of approximately 25%; a later California WARN notice quantified the January action at 44 employees. |
44 | Not known | United States |
2 sources for Atara Biotherapeutics |
Where this comes from
Every cut listed for Atara Biotherapeutics was entered by a person who checked it against a filing or a named report. Nothing is scraped and nothing publishes itself. What is not here is what we have not verified, not what did not happen.
Spotted something wrong or missing about Atara Biotherapeutics? Tell us on our Discord and we will check it.