Genentech Layoffs & WARN Notices — 3,252 Workers Affected

All WARN Act mass layoff and plant closure notices filed by Genentech.

Data updated 2026-06-26

Total Notices

3,252

Workers Affected

States

2009

First Filing

2026

Latest Filing

Data Insights

Industry Breakdown

Workers affected by industry sector

Layoff Types

Workers affected by notice type

Genentech WARN Act Filings

WARN Act layoff notices
Company	Location	Employees	Notice Date	Type
Genentech	South South San Francisco, CA	103	2026-06-26
Genentech	South San Francisco, CA	118	2025-10-27	Layoff
Genentech	South South San Francisco, CA	118	2025-10-24
genentech	South San Francisco, CA	141	2025-08-18	Layoff
Genentech	South San Francisco, CA	87	2025-07-17	Layoff
Genentech	South South San Francisco, CA	87	2025-07-16
Genentech	South South San Francisco, CA	143	2025-05-29	Layoff
Genentech	South South San Francisco, CA	93	2024-08-22	Layoff
Genentech	South South San Francisco, CA	436	2024-04-09	Layoff
Genentech	South San Francisco, CA	271	2023-03-27	Layoff
Genentech, Inc. and Genentech USA	San Francisco, CA	52	2021-11-10	Layoff
Genentech, Inc. and Genentech USA	South San Francisco, CA	474	2020-07-24	Layoff
Genentech	South San Francisco, CA	114	2020-02-20	Closure
Genentech, Inc. and Genentech USA	South San, CA	54	2019-03-29	Layoff
Genentech, Inc. and Genentech USA	South San, CA	67	2019-01-29	Layoff
Genentech	South San, CA	83	2018-12-05	Layoff
Genentech, Inc. and Genentech USA	South San, CA	223	2018-08-09	Layoff
Genentech	Vacaville, CA	128	2017-11-01	Layoff
Genentech	South San Francisco, CA	62	2011-05-31
Genentech	South San Francisco, CA	85	2011-03-31

Genentech Layoff FAQ

Is Genentech laying off in 2026?

Yes. Genentech has filed 1 WARN Act notice in 2026 affecting 103 workers. See the filings table above for locations and dates.

How many layoffs has Genentech had?

Genentech has filed 28 WARN Act notices affecting a total of 3,252 workers across 1 state.

When was Genentech's most recent layoff?

Genentech's most recent WARN Act filing was on 2026-06-26.

What states has Genentech laid off workers in?

Genentech has filed WARN Act notices in: California.

What is the WARN Act?

The Worker Adjustment and Retraining Notification (WARN) Act is a federal law that requires employers with 100 or more employees to provide 60 calendar days' advance notice of plant closings and mass layoffs.

How do I get notified about Genentech layoffs?

Subscribe using the form above to receive free daily email alerts whenever new WARN Act notices are filed. You can also set up custom filters and webhooks with a paid API plan at warnfirehose.com/pricing.

Latest Layoff Reports

California — May 2026

SEC Filings & Hiring Signals

Cross-dataset signals for Genentech: SEC 8-K event filings and H-1B labor condition applications often move before and after WARN notices.

1,430 H-1B LCA petitions filed (FY2010–FY2026) — check H-1B layoff risk →

Related Industries

Browse layoff data for industries where Genentech operates:

Information & Technology Layoffs Professional Services Layoffs Wholesale Trade Layoffs

States with Filings

California

For Funds & Analysts

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Hedge Fund Annual Contract → Short-Seller Signals → Custom Research Report →

Related Resources

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