Prothena Biosciences Layoffs
All WARN Act mass layoff and plant closure notices filed by Prothena Biosciences.
Data updated
2
Total Notices
182
Workers Affected
1
States
2025
First Filing
2025
Latest Filing
Prothena Biosciences WARN Act Filings
| Company | Location | Employees | Notice Date | Type |
|---|---|---|---|---|
| Prothena Biosciences | Brisbane, CA | 91 | Layoff | |
| Prothena Biosciences | Brisbane, CA | 91 | Layoff |
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Prothena Biosciences Layoff FAQ
Is Prothena Biosciences laying off in 2026?
Prothena Biosciences has no 2026 WARN notices on record. The most recent WARN Act filing was in 2025.
How many layoffs has Prothena Biosciences had?
Prothena Biosciences has filed 2 WARN Act notices affecting a total of 182 workers across 1 state.
When was Prothena Biosciences's most recent layoff?
Prothena Biosciences's most recent WARN Act filing was on 2025-06-10.
What states has Prothena Biosciences laid off workers in?
Prothena Biosciences has filed WARN Act notices in: California.
What is the WARN Act?
The Worker Adjustment and Retraining Notification (WARN) Act is a federal law that requires employers with 100 or more employees to provide 60 calendar days' advance notice of plant closings and mass layoffs.
How do I get notified about Prothena Biosciences layoffs?
Subscribe using the form above to receive free daily email alerts whenever new WARN Act notices are filed. You can also set up custom filters and webhooks with a paid API plan at warnfirehose.com/pricing.
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SEC Filings & Hiring Signals
Cross-dataset signals for Prothena Biosciences: SEC 8-K event filings and H-1B labor condition applications often move before and after WARN notices.
2 H-1B LCA petitions filed (FY2021–FY2026) — check H-1B layoff risk →
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