US WARN layoff notices › Employers › Prothena Biosciences
Official state WARN filings by Prothena Biosciences since 2024, normalized from state labor department sources. Latest notice: 2025-06-10.
| Notice date | State | Location | Employees | Effective date | Type |
|---|---|---|---|---|---|
| 2025-06-10 | California | San Mateo County | 91 | 2025-08-01 | Layoff Permanent |
Source: state WARN Act disclosures, normalized in the free US WARN notices dataset (CSV/JSON, no login, 48h-delayed, notices 2024+). WARN notices are advance notifications of plant closings and mass layoffs; actual layoff counts and dates can change after filing.