Arsenal Biosciences, Inc. Layoff — October 2026
SOURCEOFFICIAL FILINGCalifornia Employment Development Department· filed August 31, 2026View the filing ↗
What we know
Location: Oyster Point Blvd South San Francisco, CA (San Mateo County).
A WARN notice for this layoff is recorded on August 31, 2026.
Disclosed through an official WARN filing with the CA state workforce agency.
Summary
Arsenal Biosciences, Inc. disclosed this layoff in an official WARN (Worker Adjustment and Retraining Notification) notice recorded by the CA state workforce agency on August 31, 2026. The notice covers 58 employees in Oyster Point Blvd South San Francisco, CA (San Mateo County), with the layoff effective October 29, 2026.
LayoffTalk has tracked 4 layoff events at Arsenal Biosciences, Inc. since September 2025, including 158 jobs documented in official WARN filings, with 2 additional events known from news reporting.
Comments (0)
Anonymous by default. Be kind — people reading this may be going through it right now.
No comments yet. Be the first to share your thoughts.
Estimated figure based on a WARN filing. Not yet confirmed by Arsenal Biosciences, Inc..
Affected by this?
Share your story anonymously — it helps others reading this feel less alone.
Share your story →More layoffs at Arsenal Biosciences, Inc.
Recent tracked events at this company.
Recent layoffs in CA
Other companies with tracked events in the same state.