Layoffs at Prothena Biosciences
- Layoff events
- 1
- verified and sourced
- Roles reported
- 91
- roles in total
- Announced
- 2 Jun 2025
- Reported by
- Prothena and WARNTracker / U.S. DOL WARN data
This page records what we could verify and source. It is not a complete record of every job cut at Prothena Biosciences: 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 |
|---|---|---|---|---|---|---|
| Prothena Biosciences |
Pipeline setback
Following the failed Phase 3 AFFIRM-AL trial, Prothena filed a California WARN notice for 91 Brisbane employees; the company later announced a broader approximately 63% workforce reduction. |
91 | Not known | Brisbane, California workforce, Brisbane, United States |
Where this comes from
Every cut listed for Prothena Biosciences 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.
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