SEC Form 4Coverage since May 27, 2026
$SION insider trading
Over the last 12 months, Sionna Therapeutics insiders reported no purchases and 7 sales totaling $18.7M across SEC Form 4 filings. 100% of the activity was filed under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $18.7M 7 events
- Events · 12m
- 7 Form 4 filings, grouped
- Insiders · 12m
- 3 distinct reporters
- 10b5-1 share
- 100% pre-arranged plans
Side
Price · $SION · 12Mvia TradingView
Top insiders · 12m
Thompson Peter A.—3× · $9.1M
ORBIMED ADVISORS LLC—3× · $9.1M
Fitzpatrick JenniferChief Legal Officer1× · $447K
All insider trades
7 events
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Jul 7, 2026 | Thompson Peter A.D | ▼ Sale | 85,918 | $44.86 | $3.9M | -3.4% | plan · indirect |
| Jul 7, 2026 | ORBIMED ADVISORS LLCD | ▼ Sale | 85,918 | $44.86 | $3.9M | -3.4% | plan · indirect |
| Jul 6, 2026 | Fitzpatrick JenniferChief Legal Officer · O | ▼ Sale | 10,250 | $43.6 | $447K | -100% | plan |
| Jun 30, 2026 | Thompson Peter A.D | ▼ Sale | 115,844 | $45.5 | $5.3M | -4.3% | plan · indirect |
| Jun 30, 2026 | ORBIMED ADVISORS LLCD | ▼ Sale | 115,844 | $45.5 | $5.3M | -4.3% | plan · indirect |
| May 27, 2026 | Thompson Peter A.D | ▼ Sale | 101 | $44.49 | $4K | — | plan · indirect |
| May 27, 2026 | ORBIMED ADVISORS LLCD | ▼ Sale | 101 | $44.49 | $4K | — | plan · indirect |
About Form 4
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $SION feed.