US WARN intelligence
San Mateo County, California WARN notices
San Mateo County, California has 581 non-cancelled imported WARN notices reporting 46,943 workers affected. 6 notices have future effective dates. These totals cover imported records only.
What the official notice history shows
During the last 365 days, this imported archive contains 47 eligible official filings for San Mateo County, California, reporting 6,121 affected workers. 0 worker counts are unavailable. The newest official notice date is Sep 14, 2026.
580 non-cancelled direct government records and 1 attributed secondary records appear in the full archive. Recent official event types: layoff, closure. These figures describe notices, not unique people or completed layoffs. Grouped company names do not establish ownership.
Compare original weekly and monthly official-data reports → · How dates, names and counts are interpreted
Notice history by year
Filings and attributed reports
| Company / location | Workers | Effective date | Notice date | Type / source |
|---|---|---|---|---|
| Takeda Development Center AmericaSan Mateo, CA | 29 | Apr 30, 2022 | Oct 7, 2021 | closureSource ↗ |
| Flying Food GroupSan Mateo, CA | 123 | Nov 1, 2021 | Oct 4, 2021 | layoffSource ↗ |
| Mylan PharmaceuticalsSan Mateo, CA | 75 | Jan 7, 2022 | Oct 4, 2021 | closureSource ↗ |
| Milestone TechnologiesSan Mateo, CA | 81 | Dec 1, 2021 | Oct 1, 2021 | layoffSource ↗ |
| Theravance Biopharma USSan Mateo, CA | 163 | Nov 30, 2021 | Sep 28, 2021 | layoffSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 1 | Oct 20, 2021 | Sep 16, 2021 | layoffSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 30 | Nov 7, 2021 | Sep 16, 2021 | layoffSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 4 | Oct 29, 2021 | Sep 16, 2021 | layoffSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 11 | Oct 15, 2021 | Sep 16, 2021 | layoffSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 4 | Sep 30, 2021 | Sep 16, 2021 | layoffSource ↗ |
| Flying Food GroupSan Mateo, CA | 123 | Nov 1, 2021 | Sep 13, 2021 | layoffSource ↗ |
| Sanofi's Principia BiopharmaSan Mateo, CA | 38 | Oct 8, 2021 | Aug 31, 2021 | closureSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 5 | Oct 20, 2021 | Aug 30, 2021 | layoffSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 14 | Sep 30, 2021 | Aug 13, 2021 | layoffSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 10 | Oct 15, 2021 | Aug 13, 2021 | layoffSource ↗ |
| Bristol-Myers Squibb and MyoKardiaSan Mateo, CA | 4 | Sep 30, 2021 | Aug 13, 2021 | layoffSource ↗ |
| Flying Food GroupSan Mateo, CA | 119 | Oct 1, 2021 | Aug 1, 2021 | layoffSource ↗ |
| Bristol-Meyers Squibb and MyoKardiaSan Mateo, CA | 4 | Sep 30, 2021 | Jul 29, 2021 | layoffSource ↗ |
| Sky ChefsSan Mateo, CA | 210 | Oct 1, 2021 | Jul 28, 2021 | layoffSource ↗ |
| Morrison Management SpecialistsSan Mateo, CA | 84 | Sep 30, 2021 | Jul 15, 2021 | closureSource ↗ |
| White Glove Logistics LLC - DFA5 (Amazon Station)South San Francisco, CA | 39 | Jun 24, 2021 | May 26, 2021 | closureSource ↗ |
| Off the Grid Services, LLC - The Whole CartSouth San Francisco, CA | 251 | Apr 23, 2021 | Apr 15, 2021 | closureSource ↗ |
| The RealRealBrisbane, CA | 327 | Jul 9, 2021 | Apr 7, 2021 | closureSource ↗ |
| Crescendo BioscienceSouth San Francisco, CA | 22 | May 31, 2021 | Apr 6, 2021 | layoffSource ↗ |
| Dermira, Inc. - Eli Lilly andMenlo Park, CA | 163 | May 31, 2021 | Apr 1, 2021 | closureSource ↗ |