Illumina, Inc. Worldwide Headquarters has 5 WARN notices on file in California since April 2025, covering 189 workers, according to official state records. The most recent notice was recorded on Jan 23, 2026, with an effective date of Mar 9, 2026.
WARN notices cover planned layoffs and closures that meet the legal thresholds at a single site, so they do not show every job cut. Checked every hour.
Illumina, Inc. Worldwide Headquarters layoffs over time
Workers affected each month. Hover or tap a bar.
Hover or tap a month to see the details.
Sources: SEC filings, company statements and state WARN notices. Announced cuts and WARN notices can describe the same layoff.
Every Illumina, Inc. Worldwide Headquarters WARN notice
| Date | State | Location | Workers | Type | Effective |
|---|---|---|---|---|---|
| Jan 23, 2026 | CA | San Diego County | 1 | Layoff Permanent | Mar 9, 2026 |
| Jan 23, 2026 | CA | San Diego County | 4 | Layoff Permanent | Mar 16, 2026 |
| Nov 14, 2025 | CA | San Diego County | 8 | Layoff Permanent | Nov 11, 2025 |
| Nov 6, 2025 | CA | San Diego County | 4 | Layoff Permanent | Jan 5, 2026 |
| Apr 17, 2025 | CA | San Diego County | 172 | Layoff Permanent | Jun 16, 2025 |
Date is when the state received or processed the notice. Company names and locations as filed.
Illumina, Inc. Worldwide Headquarters layoffs FAQ
How many people has Illumina, Inc. Worldwide Headquarters laid off?
According to WARN notices filed in California, Illumina, Inc. Worldwide Headquarters has reported layoffs or closures affecting 189 workers in 5 notices since April 2025. WARN notices only cover qualifying layoffs at a single site, so the company total may be different.
When was the latest Illumina, Inc. Worldwide Headquarters WARN notice?
The most recent notice in our records is dated Jan 23, 2026 and covers 1 worker in San Diego County, with an effective date of Mar 9, 2026.
Where does this Illumina, Inc. Worldwide Headquarters layoff data come from?
From the official WARN notice records published by California state agencies, which we check twice a day. Each notice is shown as filed.
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