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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

581Non-cancelled notices
46,943Reported workers
6Future effective dates
Coverage is limited to connected sources and imported date ranges. 0 notices have unavailable worker counts. Company groups match normalized names; aliases below preserve exact employer names from filings. Methodology →

Notice history by year

202638 notices · 5,521 reported workers
202562 notices · 3,309 reported workers
202448 notices · 3,865 reported workers
2023129 notices · 5,388 reported workers
202244 notices · 4,115 reported workers
202142 notices · 2,917 reported workers
2020170 notices · 18,271 reported workers
201923 notices · 1,595 reported workers
201817 notices · 1,372 reported workers
20177 notices · 515 reported workers
20161 notices · 75 reported workers
Oracle America →California →Redwood City →LeeMAH Electronics →Brisbane →Arsenal Biosciences →South San Francisco →Cellares →FLYING FOOD GROUP →Burlingame →Visa →Foster City →Yerba Mate Co., LLC - South San Francisco →Flagship Facilities Services →Genentech →

Filings and attributed reports

Company / locationWorkersEffective dateNotice dateType / source
WeDriveUSan Mateo, CA46Nov 26, 2022Sep 26, 2022layoffSource ↗
Tremor InternationalThird Floor Redwood City, CA49Nov 18, 2022Sep 19, 2022layoffSource ↗
GenapsysSan Mateo, CA1Sep 14, 2022Sep 14, 2022closureSource ↗
RealiSan Mateo, CA132Sep 9, 2022Sep 3, 2022closureSource ↗
PACT PharmaSouth South San Francisco, CA51Sep 30, 2022Aug 19, 2022layoffSource ↗
Atara BiotherapeuticsSan Mateo, CA14Oct 7, 2022Aug 8, 2022layoffSource ↗
Oracle AmericaSan Mateo, CA201Oct 3, 2022Aug 4, 2022layoffSource ↗
Robinhood MarketsSan Mateo, CA146Oct 1, 2022Aug 2, 2022layoffSource ↗
Talis BiomedicalSan Mateo, CA57Aug 1, 2022Aug 1, 2022layoffSource ↗
RingCentralSan Mateo, CA25Sep 18, 2022Jul 20, 2022layoffSource ↗
RingCentralSan Mateo, CA25Sep 25, 2022Jul 20, 2022layoffSource ↗
CytomX TherapeuticsSan Mateo, CA66Jul 13, 2022Jul 13, 2022layoffSource ↗
Adverum BiotechnologiesSan Mateo, CA51Jul 7, 2022Jul 7, 2022layoffSource ↗
Adverum BiotechnologiesSan Mateo, CA27Jul 7, 2022Jul 7, 2022layoffSource ↗
ABM Industry GroupsSan Mateo, CA368Jul 24, 2022Jul 1, 2022layoffSource ↗
PACT PharmaSan Mateo, CA94Aug 29, 2022Jun 30, 2022layoffSource ↗
TeslaSan Mateo, CA229Aug 27, 2022Jun 29, 2022closureSource ↗
SummerBioSan Mateo, CA101Sep 1, 2022Jun 14, 2022closureSource ↗
Robinhood MarketsSan Mateo, CA100Jul 1, 2022Apr 28, 2022layoffSource ↗
AllakosSan Mateo, CA61Feb 16, 2022Feb 15, 2022layoffSource ↗
Alexion PharmaceuticalsSan Mateo, CA36Apr 8, 2022Jan 20, 2022closureSource ↗
Wyndham Hotels & ResortsSan Mateo, CA27Mar 2, 2022Dec 16, 2021layoffSource ↗
Theravance Biopharma USSan Mateo, CA38Feb 28, 2022Dec 16, 2021layoffSource ↗
Franklin TempletonSan Mateo, CA4Jan 31, 2022Nov 24, 2021layoffSource ↗
Genentech, Inc. and Genentech USASan Mateo, CA52Jan 4, 2022Nov 3, 2021layoffSource ↗

581 notices · Source check Oct 10, 2026

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