Lyell Immunopharma, Inc.
Lyell Immunopharma, Inc. (LYEL) Number of Employees – History & Annual Headcount
Annual SEC headcount, year-over-year change, and per-employee efficiency — chart and full history below.
SEC EDGAR · FMP · LYEL · as of Mar 12, 2026
Latest filing snapshot
Lyell Immunopharma, Inc. (LYEL) employee data is sourced from the annual SEC 10-K filing. As of 2025, full-time employees only. Global consolidated headcount. View SEC filing ↗
LYEL Employee Count
2021 – 2025 · Annual · SEC filingSource: SEC annual filings · Hover bar to view year data · Click to view original filing
Employees History
| Filing Date | Employees | Change (1Y) | Growth (1Y) | SEC filing link |
|---|---|---|---|---|
| 2026-03-12 | 188 | -112 | -37.33% | |
| 2025-03-11 | 300 | +76 | +33.93% | |
| 2024-02-28 | 224 | -50 | -18.25% | |
| 2023-02-28 | 274 | +55 | +25.11% | |
| 2022-03-29 | 219 | — | — |
▸ Source: SEC Annual Reports (Form 10-K / 20-F). Employee counts as of fiscal year end. Click the ↗ icon at the end of a row to open the original SEC filing in a new tab.
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About LYEL employees
LYEL Employees · Headcount
Lyell Immunopharma, Inc. (LYEL) employee data is sourced from the annual SEC 10-K filing. As of 2025, Lyell Immunopharma, Inc. had 188 full-time employees globally. Full-time employees only. Global consolidated headcount.
Lyell Immunopharma, Inc. employs 188 full-time employees as of the latest filing within the Biotechnology industry. Revenue per employee stands at $191, reflecting the company's operational efficiency.
Lyell Immunopharma, Inc.'s workforce decreased by 112 (37.33%) in 2025 compared to the prior fiscal year. The historical trend reflects the company's expansion and contraction cycles.
Lyell Immunopharma, Inc.'s revenue per employee of $191 positions it among the notable performers in the Biotechnology sector for operational efficiency.
Frequently Asked Questions
LYEL Employees · 5 questionsAs of the latest SEC 10-K filing (2025), Lyell Immunopharma, Inc. had 188 full-time employees globally. This figure is sourced from the company's mandatory annual disclosure to the SEC.
▸ Data source: FMP /historical-employee-count · SEC EDGAR annual filings · As reported · Global consolidated headcount · As of 2026-03-12