County record, California WARN filings

San Mateo County Layoff Notices, Fiscal Year 2023-2024

Benjamin Eghbali, Esq.Legal notes by Benjamin Eghbali, Esq.

Every WARN notice filed by employers in San Mateo County since July 2014: 646 notices and 51,504 workers, searchable and sorted newest first.

Every WARN notice filed with the California EDD since July 2014: 17,562 notices, 8,284 employers, 1,453,182 workers.

Layoff notices in San Mateo County at a glance

San Mateo County employers have filed 646 WARN notices with the EDD since July 1, 2014, naming 51,504 workers. The most recent notice is dated Sep 13, 2026. 187 of the notices show fewer than 60 days between notice and effective date outside the 2020 COVID window; the 60-day rule explains what that gap can mean for the workers involved. Since the EDD began reporting industry in 2026, the sectors filing most here are Manufacturing (758 workers), Finance and Insurance (320 workers), Professional Scientific and Technical Services (261 workers).

Notices in fiscal year 2023-2024, newest first

69 notices, 4,631 workers. Show all years.

WARN notices in San Mateo County
EmployerCityNotice dateEffectiveWorkersTypeDays notice
Astellas Gene Therapies, Inc.South San FranciscoJun 19, 2024Jun 19, 202410Layoff, permanent0 under 60
Thought Stream dba BluescapeRedwood CityJun 12, 2024Jun 12, 202435Closure, permanent0 under 60
La Petite Baleen Inc.San BrunoJun 3, 2024Aug 5, 202477Closure, temporary63
Phoenix Labs USA Operations, Inc. aka Phoenix Labs (FosterSan MateoMay 22, 2024May 22, 2024162Layoff, permanent0 under 60
WalmartSan BrunoMay 17, 2024Aug 9, 2024250Layoff, permanent84
WalmartSan BrunoMay 17, 2024Aug 9, 202411Layoff, permanent84
Bolt Biotherapeutics, Inc.Redwood CityMay 14, 2024Jul 15, 202438Layoff, permanent62
Indeed Inc.San MateoMay 13, 2024Jul 12, 202487Layoff, permanent60
BioMarin Pharmaceutical Inc.BrisbaneMay 14, 2024Jul 13, 20243Layoff, permanent60
Bristol Myers SquibbRedwood CityApr 29, 2024Jun 25, 2024114Layoff, permanent57 under 60
Pacific Biosciences of California, Inc.Menlo ParkApr 29, 2024Jun 28, 202471Layoff, permanent60
Rivian Automotive, LLCSouth San FranciscoApr 19, 2024Jun 18, 20241Layoff, permanent60
Freenome, Inc.South San FranciscoApr 23, 2024Jun 22, 2024118Layoff, permanent60
Gilead Sciences, Inc.Foster CityApr 23, 2024Jun 28, 202458Layoff, permanent66
Twenty Twenty Therapeutics LLCSouth San FranciscoApr 23, 2024Jun 26, 202476Closure, permanent64
Aura Management Co.MillbraeApr 18, 2024Jun 25, 202420Closure, permanent68
Genentech, Inc.South San FranciscoApr 3, 2024Jun 5, 2024436Layoff, permanent63
Telecare Corporation - House of Transitions, Program 163 "Casa C"Redwood CityApr 3, 2024Jun 3, 2024100Closure, permanent61
SanofiSouth San FranciscoApr 3, 2024Jun 3, 2024100Closure, permanent61
The Ronin Project, Inc.San MateoMar 4, 2024Mar 1, 2024131Closure, permanent3 days after effective date
Bay Area PL Services dba BayPLSSan BrunoMar 4, 2024May 4, 202487Layoff, permanent61
Catalent, Inc.South San FranciscoMar 5, 2024May 24, 202450Closure, permanent80
Catalent, Inc.South San FranciscoMar 5, 2024May 24, 202440Closure, permanent80
Balfour Beatty US CivilsSan MateoFeb 26, 2024Apr 26, 2024222Layoff, permanent60
Sony Interactive Entertainment LLCSan MateoFeb 27, 2024Mar 16, 2024118Layoff, permanent18 under 60
Janssen Research & Development, LLCBrisbaneFeb 23, 2024Apr 26, 202455Closure, permanent63
Marriott San Mateo HotelSan MateoFeb 21, 2024May 1, 2024127Closure, permanent70
Riot GamesRedwood CityJan 22, 2024Mar 25, 20246Layoff, permanent63
Del Monte Capitol Meat Company, LLC dba Allen BrothersBrisbaneFeb 1, 2024Mar 31, 202492Closure, permanent59 under 60
Activision BlizzardFoster CityJan 25, 2024Mar 30, 202476Layoff, permanent65
Nevro Corp.Redwood CityJan 8, 2024Mar 8, 202463Layoff, permanent60
Plenty Unlimited Inc.South San FranciscoJan 19, 2024Jan 18, 202455Layoff, permanent1 days after effective date
Allakos Inc.San CarlosJan 16, 2024Jan 18, 202459Layoff, permanent2 under 60
Trove RecommerceBrisbaneDec 21, 2023Apr 1, 202462Closure, permanent102
Trove RecommerceBrisbaneDec 21, 2023Mar 1, 202460Closure, permanent71
Trove RecommerceBrisbaneDec 21, 2023May 1, 20242Closure, permanent132
PfizerDec 15, 2023Feb 12, 202452Layoff, permanent59 under 60
Cruise LLCSan FranciscoDec 14, 2023Dec 14, 2023330Layoff, permanent0 under 60
Cruise LLCSouth San FranciscoDec 14, 2023Dec 14, 202318Layoff, permanent0 under 60
Carbon, Inc.Redwood CityDec 12, 2023Feb 15, 202460Layoff, permanent65
GE United Technologies II Inc.BrisbaneNov 21, 2023Nov 21, 202360Closure, permanent0 under 60
Talis Biomedical CorporationRedwood CityNov 14, 2023Jan 14, 2024103Closure, permanent61
Kaiser Foundation HospitalsSouth San FranciscoNov 6, 2023Jan 4, 20241Layoff, permanent59 under 60
Informatica LLCRedwood CityNov 1, 2023Dec 31, 202390Layoff, permanent60
Sangamo Therapeutics, Inc.BrisbaneNov 1, 2023Jan 2, 202465Closure, permanent62
Sangamo Therapeutics, Inc.BrisbaneNov 1, 2023Jan 2, 202437Layoff, permanent62
Exabeam, Inc.San MateoOct 25, 2023Jan 1, 202494Layoff, permanent68
Gilead Sciences, Inc.Foster CityOct 4, 2023Dec 15, 202341Layoff, permanent72
Gilead Sciences, Inc.Foster CityOct 4, 2023Mar 15, 20231Layoff, permanent203 days after effective date
Robinhood Markets, Inc.Menlo ParkAug 17, 2023Oct 16, 20232Layoff, permanent60
Robinhood Markets, Inc.Menlo ParkSep 20, 2023Nov 20, 20231Layoff, permanent61
Universal Protection Service, LP dba Allied Universal SecurityMenlo ParkJul 27, 2023Sep 1, 202313Layoff, permanent36 under 60
Universal Protection Service, LP dba Allied Universal SecurityMenlo ParkJul 27, 2023Sep 1, 202312Layoff, permanent36 under 60
Universal Protection Service, LP dba Allied Universal SecurityMenlo ParkJul 27, 2023Sep 1, 20239Layoff, permanent36 under 60
Universal Protection Service, LP dba Allied Universal SecurityMenlo ParkJul 27, 2023Sep 1, 20233Layoff, permanent36 under 60
Illumina, Inc.San MateoAug 7, 2023Sep 6, 20231Layoff, permanent30 under 60
CSL ViforRedwood CityAug 21, 2023Oct 25, 202385Layoff, permanent65
Codexis, Inc.San CarlosJul 20, 2023Sep 30, 202331Layoff, permanent72
Codexis, Inc.Redwood CityJul 20, 2023Sep 30, 202328Layoff, permanent72
Charles River Laboratories, Inc.South San FranciscoJul 19, 2023Sep 19, 202355Closure, permanent62
Alto Operations California, LLCBelmontJul 14, 2023Sep 15, 202334Closure, permanent63
Yellow CorporationBrisbaneAug 1, 2023Jul 30, 202330Closure, permanent2 days after effective date
Illumina, Inc.San MateoJul 13, 2023Aug 14, 202314Layoff, permanent32 under 60
Thermo Fisher ScientificSouth San FranciscoJun 22, 2023Aug 22, 202364Layoff, permanent61
Proterra Operating Company, Inc.BurlingameJun 27, 2023Jul 28, 202348Layoff, permanent31 under 60
AmgenSan CarlosJun 13, 2023Sep 1, 20234Closure, permanent80
Illumina, Inc.Foster CityJun 21, 2023Jul 21, 202371Layoff, permanent30 under 60
Robinhood Markets, Inc.Menlo ParkJun 29, 2023Sep 1, 202323Layoff, permanent64
Sumo Logic, Inc.Redwood CityJun 7, 2023Jun 8, 202379Layoff, permanent1 under 60

Largest layoffs in San Mateo County since 2014

EmployerNoticesWorkersLatest
Meta Platforms, Inc.676,603May 22, 2026
Genentech, Inc.101,589Jun 25, 2026
Lucky Chances Casino31,467Dec 16, 2020
Oracle America, Inc.71,379Sep 13, 2026
Verity Health System of California, Inc.41,307May 4, 2020
Flying Food Group, LLC111,036Aug 13, 2026
Genentech, Inc. and Genentech USA, Inc.5870Nov 3, 2021
Visa5809Jul 30, 2026
Rosewood Sand Hill3758Dec 16, 2020
DPR Construction1715Mar 24, 2020
Gilead Sciences, Inc.8691Apr 30, 2026
Deliv, Inc., dba Deliv California Inc.1669May 7, 2020
GoPro, Inc.6610Oct 29, 2024
Walmart5534Jun 19, 2026
THE RITZ-CARLTON HOTEL CO LLC, DBA THE RITZ-CARLTON, HALF1507Mar 20, 2020
The Ritz-Carlton Hotel Company, LLC, dba The Ritz1493Mar 20, 2020
LeeMAH Electronics3479Sep 10, 2026
See's Candies, Inc.2434Apr 16, 2020
Cruise LLC3433Jul 3, 2025
All About Parking4426Feb 26, 2021

San Mateo County by fiscal year

Fiscal yearNoticesClosuresWorkers
2026-2027941,309
2025-20265785,840
2024-20254962,598
2023-202469224,631
2022-202313477,523
2021-20222861,551
2020-202178239,165
2019-20201162111,352
2018-20192992,096
2017-2018126774
2016-20173572,134
2015-20161671,331
2014-20151441,200

Cities in San Mateo County with notices

Local help after a layoff in San Mateo

A WARN notice is the start of a paper trail, not the end of your rights. Workers in San Mateo bring WARN back-pay claims in the Superior Court of the county, and the agency routes for the questions that usually travel with a layoff are the same statewide: unpaid final wages and vacation payout go to the Labor Commissioner, discrimination in who was selected goes to the Civil Rights Department (three years to file) or the EEOC (300 days). Our San Mateo employment law page covers the local courts, agencies and deadlines. Free, confidential review: (800) 371-3088.

Source: California EDD WARN reports, July 2014 to Oct 27, 2026. County and city are as stated on the notice; for 2014 to 2017 filings, where the EDD listed only a city, the county is assigned from that city. Back to the layoff tracker.

About this data: Notices come from the California Employment Development Department WARN reports (fiscal years 2014-2015 to today) and are reloaded from the EDD every Tuesday and Thursday. Employer names appear as the employer wrote them on the notice, grouped where the names clearly refer to the same company. A notice is not a finding that any law was broken. This page is general information, not legal advice about your situation.

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