// company-profile
Sionna Therapeutics, Inc. Insider Trading
SIONEvery SEC Form 4 insider trading filing for Sionna Therapeutics, Inc. (SION) — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC.
curl "https://api.form4api.com/v1/transactions?ticker=SION" -H "X-Api-Key: YOUR_API_KEY"// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Sionna Therapeutics, Inc. insiders bought $0 across 9 transactions with no open-market sales.
- Most active insider: Thompson Peter A. with 5 transactions totaling $17.7M.
- Largest single sale: $8.5M by Thompson Peter A. on May 11, 2026.
- 100% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Sionna Therapeutics, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 7, 2026 | ORBIMED ADVISORS LLC | SION | Sale10b5 | 85,918 | $44.86 | $3.85M |
| Jul 7, 2026 | Thompson Peter A. | SION | Sale10b5 | 85,918 | $44.86 | $3.85M |
| Jul 6, 2026 | Fitzpatrick Jennifer | SION | Option Exercise10b5 | 10,250 | $6.11 | $63K |
| Jul 6, 2026 | Fitzpatrick Jennifer | SION | Option Exercise10b5 | 10,250 | $0.00 | $0K |
| Jul 6, 2026 | Fitzpatrick Jennifer | SION | Sale10b5 | 10,250 | $43.60 | $447K |
45 more transactions hidden
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