US WARN layoff notices › Employers › G › Genentech
Official state WARN filings by Genentech since 1988, normalized from state labor department sources. Latest notice: 2026-07-01.
Filed under 2 spellings in state records, merged on this page: Genentech, Inc. and Genentech.
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| Notice date | State | Location | Employees | Effective date | Type |
|---|---|---|---|---|---|
| 2026-07-01 | California | San Mateo County | 103 | 2026-07-29 | Layoff Permanent |
| 2026-02-04 | California | San Mateo County | 141 | 2025-08-18 | Layoff Permanent |
| 2025-10-27 | California | San Mateo County | 118 | 2025-11-28 | Layoff Permanent |
| 2025-07-17 | California | San Mateo County | 87 | 2025-09-15 | Layoff Permanent |
| 2025-05-29 | California | San Mateo County | 143 | 2025-07-14 | Layoff Permanent |
| 2024-08-22 | California | San Mateo County | 93 | 2024-10-08 | Layoff Permanent |
| 2024-04-09 | California | San Mateo County | 436 | 2024-06-05 | Layoff Permanent |
| 2023-03-27 | California | San Mateo County | 271 | 2023-05-24 | Layoff Permanent |
| 2021-11-10 | California | San Mateo County | 52 | 2022-01-04 | Layoff Permanent |
| 2020-07-24 | California | South San Francisco, San Mateo County | 474 | 2020-09-18 | Layoff Permanent |
| 2020-02-20 | California | South San Francisco, San Mateo County | 114 | 2020-03-18 | Closure Permanent |
| 2019-03-29 | California | South San, San Mateo County | 54 | 2019-05-16 | Layoff Permanent |
| 2019-01-29 | California | South San, San Mateo County | 67 | 2019-03-29 | Layoff Permanent |
| 2018-12-05 | California | South San, San Mateo County | 83 | 2018-12-19 | Layoff Permanent |
| 2018-08-09 | California | South San, San Mateo County | 223 | 2018-08-31 | Layoff Permanent |
| 2017-11-01 | California | Vacaville, Solano County | 128 | 2017-12-31 | Layoff Permanent |
Source: state WARN Act disclosures, normalized in the free US WARN notices dataset (CSV/JSON, no login, no delay, notices 1988+). WARN notices are advance notifications of plant closings and mass layoffs; actual layoff counts and dates can change after filing.
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