Sionna Therapeutics, Inc.
Sionna Therapeutics, Inc. (SION) 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 · SION · as of Mar 2, 2026
Latest filing snapshot
Sionna Therapeutics, Inc. (SION) employee data is sourced from the annual SEC 10-K filing. As of 2025, full-time employees only. Global consolidated headcount. View SEC filing ↗
SION Employee Count
2024 – 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 |
|---|---|---|---|---|
| 2026-03-02 | 106,000 | +0 | +0.00% | |
| 2025-03-20 | 106,000 | — | — |
▸ 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 SION employees
SION Employees · Headcount
Sionna Therapeutics, Inc. (SION) employee data is sourced from the annual SEC 10-K filing. As of 2025, Sionna Therapeutics, Inc. had 106,000 full-time employees globally. Full-time employees only. Global consolidated headcount.
Sionna Therapeutics, Inc.'s workforce increased by 0 (0.00%) in 2025 compared to the prior fiscal year. The historical trend reflects the company's expansion and contraction cycles.
Frequently Asked Questions
SION Employees · 5 questionsAs of the latest SEC 10-K filing (2025), Sionna Therapeutics, Inc. had 106,000 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 2026-03-02