WARN ACT DATABASE — Data Updated Weekly

Genentech, Inc. Layoffs - WARN Act Notices

1,218 Employees Affected
2 Locations
5 Notices Filed
Nov 28, 2025 Most Recent
Affected States: California

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Genentech, Inc. has a WARN Act filing history stretching from June 2024 to November 2025, with 5 notices affecting 1,218 employees in total. All filings are in California. All classified notices are layoffs. The largest single filing affected 436 employees in DNA Way South South San Francisco, CA (June 2024). Activity has been elevated recently, with 3 of 5 notices falling within the past 12 months.

Under the WARN Act (Worker Adjustment and Retraining Notification Act), employers with 100 or more employees are required to provide 60 days advance notice before conducting plant closures or mass layoffs. These notices are filed with state labor departments and are public record.

Layoff History

Employees affected over time

All WARN Act Notices

Location Effective Date Employees Type
DNA Way South San Francisco, CA Nov 28, 2025 118 layoff
DNA Way South San Francisco, CA Sep 15, 2025 87 layoff
DNA Way South San Francisco, CA Aug 18, 2025 141 layoff
DNA Way South South San Francisco, CA Jun 5, 2024 436 layoff
DNA Way South South San Francisco, CA Jun 4, 2024 436 layoff