Employer · WARN Act history · Wholesale Trade
Genentech
449 workers across 4 WARN notices, primarily in CA - recorded in the current PlainLayoffs dataset.
- 449
- Workers cut
- 4
- WARN notices
- 1
- State
- 112
- Avg / notice
Genentech has 4 recorded WARN filings affecting 449 workers
According to WARN Act filings submitted to state workforce agencies, Genentech has 4 recorded filings covering 449 workers across 1 state, primarily CA, the 421st-largest recorded WARN footprint among 7,009 tracked employers. WARN notices cover qualifying reported events, so this record is not a complete count of the employer's workforce changes.
Genentech accounts for 3.1% of Wholesale Trade's 14,371 WARN-laid-off workers across 112 tracked employers in the dataset — #9 in Wholesale Trade by workers affected.
How 449 workers split by filing year
Calendar-year totals from WARN notice_date fields in this dataset, the same figures summed in the notice history below.
Genentech city concentration · single-city dominant
Named cities on WARN filing rows only (city blank on a filing is omitted). Shares are of the city-tagged worker total, not every notice in the record.
77.1% of named-city WARN workers for Genentech sit in DNA Way South San Francisco (346 of 449).
Lead city DNA Way South San Francisco · 77.1% · 2 named cities · top-3 share 100%
DOL WARN employer filing desk
Employer GENENTECH · Genentech 449 workers · 4 filings
NOTC-LIGHT · WORK-MID · PHOTO-UNK · RUNWAY-UNDER · STAT-SINGLE · BOOK-SINGLE · TYPE-LAYOFF
- NOTC-LIGHT 4 filings
- WORK-MID #421
- PHOTO-UNK No peer
- RUNWAY-UNDER 0d
- STAT-SINGLE CA
- BOOK-SINGLE 1 agency
- TYPE-LAYOFF 4 layoffs
Stamps derive from filed notice_date, effective_date, workers_affected, state agency source, and filing type in this dataset, not a prediction of future layoffs.
Largest Genentech WARN filings · notice runway
Top 4 rows by workers_affected from this employer's filed notices. Runway = calendar days from notice_date to effective_date when both are published and forward-dated.
- DNA Way South San Francisco, CA · Layoff · Wholesale Trade 141 workers · filed Jun 26, 2025 · 0d runway
- DNA Way South San Francisco, CA · Layoff · Professional & Technical Services 118 workers · filed Oct 24, 2025 · 0d runway
- South San Francisco, CA · Layoff · Professional & Technical Services 103 workers · filed Jun 26, 2026 · 33d runway
- DNA Way South San Francisco, CA · Layoff · Wholesale Trade 87 workers · filed Jul 16, 2025 · 0d runway
Median forward runway across 4 dated filings: 0 days (4 under 60d · 0 at/above 60d · 3 same-day or retroactive).
What changed - Genentech WARN filings by year
Computed from filed notice dates in this dataset (calendar years), not a vendor release label. Latest compared pair: .
- 2025 → 2026: WARN workers affected for Genentech fell from 346 in 2025 to 103 in 2026; notice count fell from 3 to 1.
Site-wide YoY movers: /changes (RSS). Dataset corrections: /changelog. Year hubs: /year/2026.
Where Genentech Falls Among Tracked Employers
7,009 employers with a WARN filing, bucketed by total workers affected
Bucket counts (employers by total workers affected, as of September 2026): 1-10: 955; 11-50: 1,411; 51-150: 3,067; 151-500: 1,205; 501-1.5k: 273; 1.5k-5k: 72; 5k-15k: 16; 15k+: 10. Genentech is in the 151-500 bucket (#421 of 7,009 by workers affected).
Employer Profile
Not all layoffs appear in WARN data, see our methodology for the federal + state coverage thresholds. Latest filing: Jun 2026.
WARN Notice History
2026
South San Francisco, CA · Professional & Technical Services
Effective: Jul 29, 2026
103
workers
Filed Jun 26, 2026
2025
DNA Way South San Francisco, CA · Professional & Technical Services
Effective: Oct 24, 2025
118
workers
Filed Oct 24, 2025
DNA Way South San Francisco, CA · Wholesale Trade
Effective: Jul 16, 2025
87
workers
Filed Jul 16, 2025
DNA Way South San Francisco, CA · Wholesale Trade
Effective: Jun 26, 2025
141
workers
Filed Jun 26, 2025
Questions about this Genentech record
What is the largest Genentech WARN filing on record? ▼
The largest row is the mass layoff filed for DNA Way South San Francisco, CA on Jun 26, 2025, covering 141 workers in Wholesale Trade.
Where were Genentech's WARN notices filed? ▼
The filings name South San Francisco and DNA Way South San Francisco; together they form 4 mass-layoff filings sourced from California EDD. States represented in this record: CA.
Where is Genentech's WARN footprint concentrated by city? ▼
77.1% of named-city WARN workers for Genentech sit in DNA Way South San Francisco (346 of 449).
Does Genentech's filing history show a recurring pattern? ▼
The filing history spans 2025 through 2026 across 2 calendar years; that recurrence is visible in the dated rows rather than inferred from news coverage.
How much advance notice appears in Genentech's record? ▼
The measurable notice runway is between 30 and 59 days; the WARN pay tool can value the gap, but only a qualified adviser can determine whether an exception applies. Of 4 filings on record, 3 without a published effective date are excluded from that figure.
See also: CA WARN filings · Wholesale Trade industry WARNs · WARN Act guide
Source: State WARN Act layoff registries Genentech notice history aggregated from state workforce agency filings · September 2026 A WARN filing is a required notice, not a judgment of the employer's management or finances. Coverage follows states with structured public registries; this public-record summary is not legal advice, financial advice, or employment advice.
Every figure on PlainLayoffs is rendered directly from public WARN Act filings and state workforce agency records, no number is typed in by an editor. This employer's notice history is rendered directly from state WARN Act filings. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 2026. A WARN filing is a legally required notice, not a judgment of a company's management or financial health; rankings here reflect filed notice volume only.