Arsenal Biosciences, Inc. layoffs 2026: WARN notices & reports
Arsenal Biosciences, Inc.: 2 layoff events on record since Sep 2025, 2 state WARN filings in CA naming 158 workers. Latest: Aug 31, 2026. Every event links to its source.
2events on record
2WARN filings
158workers in WARN filings
Aug 31, 2026latest event
States with WARN filings: California.
Latest Arsenal Biosciences, Inc. layoff events
| Date | Event | Where | Workers | Source |
|---|---|---|---|---|
| Aug 31, 2026 | WARNWARN notice, layoffs from Oct 29, 2026 | South San Francisco, CA | 58 | California Employment Development Department |
| Sep 16, 2025 | WARNWARN notice, layoffs from Nov 14, 2025 | CA | 100 | California Employment Development Department |
About this data
WARN notices are filed by employers with state workforce agencies, usually 60 days before a mass layoff or plant closing. Counts are as reported in the notice and can change if the employer amends it. See methodology for how records are matched to companies.
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