Sionna Therapeutics, Inc (SION) insider trading
Every open-market stock purchase and sale by Sionna Therapeutics, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Ra Capital Management L.p. (Insider) sold $21.8M in the last 90 days.
- Last insider buy: Tpg GP A LLC (10% owner), $950K, 16 months ago.
Last 12 months: insiders bought $0 (0 buys) and sold $166M (28 sales). Last close $3.87 on Oct 21, 2026.
Recent SION insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 17, 2026 | Ra Capital Management L.p. (Insider) | Sold | $21.6M |
| Sep 17, 2026 | Ra Capital Management L.p. (Insider) | Sold | $252K |
| Sep 17, 2026 | Jennifer Fitzpatrick (C-suite exec) | Bought (not open market) | — |
| Sep 17, 2026 | Jennifer Fitzpatrick (C-suite exec) | Sold (not open market) | — |
| Sep 17, 2026 | Charlotte McKee (C-suite exec) | Bought (not open market) | — |
| Sep 17, 2026 | Charlotte McKee (C-suite exec) | Bought (not open market) | — |
| Sep 17, 2026 | Charlotte McKee (C-suite exec) | Sold (not open market) | — |
| Sep 17, 2026 | Elena Ridloff (CFO) | Bought (not open market) | — |
| Sep 17, 2026 | Jennifer Fitzpatrick (C-suite exec) | Bought (not open market) | — |
| Sep 17, 2026 | Elena Ridloff (CFO) | Bought (not open market) | — |
| Sep 17, 2026 | Elena Ridloff (CFO) | Sold (not open market) | — |
| Sep 17, 2026 | Michael Cloonan (CEO) | Bought (not open market) | — |
| Sep 17, 2026 | Michael Cloonan (CEO) | Bought (not open market) | — |
| Sep 17, 2026 | Michael Cloonan (CEO) | Sold (not open market) | — |
| Sep 17, 2026 | Elena Ridloff (CFO) | Bought (not open market) | — |
| Sep 17, 2026 | Jennifer Fitzpatrick (C-suite exec) | Bought (not open market) | — |
| Jul 7, 2026 | Peter A. Thompson (Director) | Sold | $3.9M |
| Jul 7, 2026 | Orbimed Advisors LLC (Director) | Sold | $3.9M |
| Jul 6, 2026 | Jennifer Fitzpatrick (C-suite exec) | Sold | $447K |
| Jul 6, 2026 | Jennifer Fitzpatrick (C-suite exec) | Bought (not open market) | — |
| Jun 30, 2026 | Peter A. Thompson (Director) | Sold | $5.3M |
| Jun 30, 2026 | Orbimed Advisors LLC (Director) | Sold | $5.3M |
| Jun 17, 2026 | Paul J Clancy (Director) | Bought (not open market) | — |
| Jun 17, 2026 | Marcella K. Ruddy (Director) | Bought (not open market) | — |
| Jun 17, 2026 | Harold Edward Fleming (Director) | Bought (not open market) | — |
Who's trading SION
- Michael Cloonan, CEO: other filings, last Sep 17, 2026
- Elena Ridloff, CFO: other filings, last Sep 17, 2026
- Jennifer Fitzpatrick, C-suite exec: sold $1.2M (3 sales), last Sep 17, 2026
- Ra Capital Management L.p., Insider: sold $43.3M (46 sales), last Sep 17, 2026
- Charlotte McKee, C-suite exec: other filings, last Sep 17, 2026
- Orbimed Advisors LLC, Director: sold $55.7M (20 sales), last Jul 7, 2026
- Peter A. Thompson, Director: sold $55.7M (20 sales), last Jul 7, 2026
- Joanne L. Viney, Director: other filings, last Jun 17, 2026
- Bruce Booth, Insider: other filings, last Jun 17, 2026
- Paul J Clancy, Director: other filings, last Jun 17, 2026
- Harold Edward Fleming, Director: other filings, last Jun 17, 2026
- Joshua Resnick, Director: other filings, last Jun 17, 2026
- Marcella K. Ruddy, Director: other filings, last Jun 17, 2026
- Laurie Stelzer, Director: other filings, last Jun 17, 2026
- Tpg GP A LLC, 10% owner: sold $10M (1 sale), last Jan 22, 2026
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