SIONHealthcareMid-Cap
Sionna Therapeutics, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for Sionna Therapeutics, Inc. (SION), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are SION insiders buying or selling?
Sionna Therapeutics, Inc. insiders reported 7 open-market buys ($63.4M) and 40 sells ($168.7M) across 47 Form 4 filings — a net selling position of $105.3M.
Source: SEC EDGAR Form 4
Key Statistics (as of Jul 9, 2026)
Total Form 4 filings
47
SEC EDGAR
Insider filers
9
Insider buys (7)
$63.4M
Insider sells (40)
$168.7M
Insider sentiment
Net sellingNet insider flow of $105.3M in net selling.
Recent SION insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 9, 2026 | Peter A. Thompson | Director | Sale | 85.9K | $44.86 | $3.9M |
| Jul 9, 2026 | ORBIMED ADVISORS LLC | Director | Sale | 85.9K | $44.86 | $3.9M |
| Jul 7, 2026 | Jennifer Fitzpatrick | Chief Legal Officer | Sale | 10.3K | $43.60 | $446.9K |
| Jul 2, 2026 | Peter A. Thompson | Director | Sale | 115.8K | $45.50 | $5.3M |
| Jul 2, 2026 | ORBIMED ADVISORS LLC | Director | Sale | 115.8K | $45.50 | $5.3M |
| May 30, 2026 | Peter A. Thompson | Director | Sale | 101 | $44.49 | $4.5K |
| May 30, 2026 | ORBIMED ADVISORS LLC | Director | Sale | 101 | $44.49 | $4.5K |
| May 11, 2026 | Peter A. Thompson | Director | Sale | 293.0K | $45.62 | $13.4M |
| May 11, 2026 | ORBIMED ADVISORS LLC | Director | Sale | 293.0K | $45.62 | $13.4M |
| Apr 22, 2026 | Peter A. Thompson | Director | Sale | 55.3K | $44.67 | $2.5M |
| Apr 22, 2026 | ORBIMED ADVISORS LLC | Director | Sale | 55.3K | $44.67 | $2.5M |
| Apr 16, 2026 | Peter A. Thompson | Director | Sale | 510.6K | $44.94 | $22.9M |
| Apr 16, 2026 | ORBIMED ADVISORS LLC | Director | Sale | 510.6K | $44.94 | $22.9M |
| Mar 6, 2026 | Jennifer Fitzpatrick | Chief Legal Officer | Sale | 10.3K | $33.86 | $347.0K |
| Feb 5, 2026 | Peter A. Thompson | Director | Sale | 31.0K | $44.58 | $1.4M |
| Feb 5, 2026 | ORBIMED ADVISORS LLC | Director | Sale | 31.0K | $44.58 | $1.4M |
| Jan 26, 2026 | TPG GP A, LLC | 10% Owner | Sale | 250.0K | $40.00 | $10.0M |
| Dec 30, 2025 | ORBIMED ADVISORS LLC | Director | Sale | 33.4K | $44.55 | $1.5M |
| Dec 30, 2025 | Peter A. Thompson | Director | Sale | 33.4K | $44.55 | $1.5M |
| Dec 20, 2025 | ORBIMED ADVISORS LLC | Director | Sale | 1.9K | $44.49 | $83.4K |
| Dec 20, 2025 | Peter A. Thompson | Director | Sale | 1.9K | $44.49 | $83.4K |
| Dec 9, 2025 | Jennifer Fitzpatrick | Chief Legal Officer | Sale | 10.3K | $40.52 | $415.3K |
| Nov 26, 2025 | ORBIMED ADVISORS LLC | Director | Sale | 108.1K | $44.55 | $4.8M |
| Nov 26, 2025 | Peter A. Thompson | Director | Sale | 108.1K | $44.55 | $4.8M |
| Nov 24, 2025 | Peter Kolchinsky | Director, 10% Owner | Sale | 30.3K | $39.61 | $1.2M |
Showing the 25 most recent of 47 Form 4 filings for Sionna Therapeutics, Inc..
Most active SION insiders
- ORBIMED ADVISORS LLC11 filings
- Peter A. Thompson11 filings
- Bruce Booth5 filings
- Michael Cloonan5 filings
- Jennifer Fitzpatrick4 filings
Ask anything about SION insider activity
Use Trabud's AI agent to query Sionna Therapeutics, Inc.'s Form 4 history in plain English — "Show me SION CEO purchases this year" or compare it against any other ticker.
Open the AI agentSION insider trading FAQ
Are Sionna Therapeutics, Inc. insiders buying or selling?
Across 47 SEC Form 4 filings, Sionna Therapeutics, Inc. (SION) insiders reported 7 open-market purchases totaling $63.4M and 40 sales totaling $168.7M. That is a net selling position of $105.3M.
How many insiders trade SION stock?
9 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Sionna Therapeutics, Inc.. The most recent filing was accepted on Jul 9, 2026.
Where does Trabud get SION insider trading data?
All SION insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
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