Employer · WARN Act history · Professional & Technical Services
Sutro Biopharma
54 workers across 3 WARN notices, primarily in CA - recorded in the current PlainLayoffs dataset.
- 54
- Workers cut
- 3
- WARN notices
- 1
- State
- 18
- Avg / notice
Sutro Biopharma has 3 recorded WARN filings affecting 54 workers
According to WARN Act filings submitted to state workforce agencies, Sutro Biopharma has 3 recorded filings covering 54 workers across 1 state, primarily CA, the 4,454th-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.
Sutro Biopharma is a minor share of Professional & Technical Services WARN activity — 0.2% of the sector's 21,639 workers across 166 employers, ranking #104 in Professional & Technical Services.
DOL WARN employer filing desk
Employer SUTRO-BIOPHA · Sutro Biopharma 54 workers · 3 filings
NOTC-LIGHT · WORK-LIGHT · PHOTO-UNK · RUNWAY-UNK · STAT-SINGLE · BOOK-SINGLE · TYPE-LAYOFF
- NOTC-LIGHT 3 filings
- WORK-LIGHT #4,454
- PHOTO-UNK No peer
- RUNWAY-UNK Runway n/a
- STAT-SINGLE CA
- BOOK-SINGLE 1 agency
- TYPE-LAYOFF 3 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 Sutro Biopharma WARN filings · notice runway
Top 3 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.
- Oyster Point Blvd South San Francisco, CA · Layoff · Professional & Technical Services 45 workers · filed Sep 29, 2025 · 0d runway
- Industrial Rd San Carlos, CA · Layoff · Professional & Technical Services 8 workers · filed Sep 29, 2025 · 0d runway
- Remote, CA · Layoff · Professional & Technical Services 1 workers · filed Sep 29, 2025 · 0d runway
Median forward runway across 3 dated filings: 0 days (3 under 60d · 0 at/above 60d · 3 same-day or retroactive).
Employer Profile
Not all layoffs appear in WARN data, see our methodology for the federal + state coverage thresholds. Latest filing: Sep 2025.
WARN Notice History
2025
Oyster Point Blvd South San Francisco, CA · Professional & Technical Services
Effective: Sep 29, 2025
45
workers
Filed Sep 29, 2025
Industrial Rd San Carlos, CA · Professional & Technical Services
Effective: Sep 29, 2025
8
workers
Filed Sep 29, 2025
Remote, CA · Professional & Technical Services
Effective: Sep 29, 2025
1
workers
Filed Sep 29, 2025
Questions about this Sutro Biopharma record
What is the largest Sutro Biopharma WARN filing on record? ▼
The largest row is the mass layoff filed for Oyster Point Blvd South San Francisco, CA on Sep 29, 2025, covering 45 workers in Professional & Technical Services.
Where were Sutro Biopharma's WARN notices filed? ▼
The filings name Oyster Point Blvd South San Francisco, Industrial Rd San Carlos, and Remote; together they form 3 mass-layoff filings sourced from California EDD. States represented in this record: CA.
Does Sutro Biopharma's filing history show a recurring pattern? ▼
All 3 filings fall in 2025, so the record describes a concentrated episode rather than a multi-year cadence.
How much advance notice appears in Sutro Biopharma's record? ▼
No trustworthy advance-notice runway can be derived from these rows because the source dates are equal, missing, or retroactive.
See also: CA WARN filings · Professional & Technical Services industry WARNs · WARN Act guide
Source: State WARN Act layoff registries Sutro Biopharma 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.