Arsenal Biosciences, Inc. Layoffs & WARN Notices — WARN Index

Arsenal Biosciences, Inc.: 2 WARN layoff notices since 2025, affecting 158 workers in 1 state. Latest filing August 31, 2026.

WARN notices filed by Arsenal Biosciences, Inc.

• Arsenal Biosciences, Inc.: South San Francisco, CA · 58 workers · August 31, 2026
• Arsenal Biosciences, Inc.: South San Francisco, CA · 100 workers · September 16, 2025

Layoffs in: California