US WARN intelligence
Arsenal Biosciences layoffs & WARN notices
Arsenal Biosciences appears in 2 non-cancelled imported WARN records across 1 states. These records report 158 affected workers; 1 have future effective dates. Totals include imported records only. Secondary records are attributed separately.
What the official notice history shows
During the last 365 days, this imported archive contains 1 eligible official filings for Arsenal Biosciences, reporting 58 affected workers. 0 worker counts are unavailable. The newest official notice date is Aug 31, 2026.
2 non-cancelled direct government records and 0 attributed secondary records appear in the full archive. Recent official event types: layoff. These figures describe notices, not unique people or completed layoffs. Grouped company names do not establish ownership.
Compare original weekly and monthly official-data reports → · How dates, names and counts are interpreted
State breakdown
| State | Notices | Reported workers | Upcoming events |
|---|---|---|---|
| California | 2 | 158 | 1 |
Reported employer names
- Arsenal Biosciences, Inc.
Notice history by year
Filings and attributed reports
| Company / location | Workers | Effective date | Notice date | Type / source |
|---|---|---|---|---|
| Arsenal BiosciencesSouth San Francisco, CA | 58 | Oct 29, 2026 | Aug 31, 2026 | layoffSource ↗ |
| Arsenal BiosciencesSan Mateo, CA | 100 | Nov 14, 2025 | Sep 16, 2025 | layoffSource ↗ |