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SIONNasdaq
Sionna Therapeutics, Inc.
Pharmaceutical Preparations · DE · CIK 2036042
Sionna Therapeutics develops novel medicines to normalize CFTR protein function for cystic fibrosis patients
$1.62B
Market cap
$42.97
Last close
+1.9%
1D
+10.7%
5D
320K
Volume
Price · last 39 sessions+6.2%
May 4L $33.51 · H $45.95Jun 29
23
Total filings
Jun 18, 2026
Last filing
12/31
Fiscal year end
8-KShareholder VoteJun 18, 202610-Q10-QMay 12, 20268-KResults of OperationsMay 12, 2026DEFA14ADEFA14AApr 27, 2026DEF 14ADEF 14AApr 27, 2026SC 13D/ASC 13D/AApr 20, 202610-K10-KMar 2, 20268-KResults of OperationsMar 2, 202610-Q10-QNov 5, 20258-KResults of OperationsNov 5, 202510-Q10-QAug 11, 20258-KResults of OperationsAug 11, 20258-KShareholder VoteJun 13, 20258-KReg FD DisclosureJun 4, 202510-Q10-QMay 12, 20258-KResults of OperationsMay 12, 2025DEFA14ADEFA14AApr 29, 2025DEF 14ADEF 14AApr 29, 202510-K10-KMar 20, 20258-KResults of OperationsMar 20, 20258-KBylaw AmendmentFeb 10, 2025424B4424B4Feb 7, 2025S-1/AS-1/AFeb 3, 2025S-1S-1Jan 17, 2025
Insider Activity
In the 90 days to Mar 5, 2026: 4 sold $16.7M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 5, 2026 | Fitzpatrick JenniferChief Legal Officer | Sell | 10,250 | $33.86 | $347K |
| Feb 3, 2026 | Orbimed Capital Gp Viii LlcDirector | Sell | 29,063 | $44.58 | $1.3M |
| Feb 3, 2026 | Thompson Peter A.Director | Sell | 29,063 | $44.58 | $1.3M |
| Feb 2, 2026 | Thompson Peter A.Director | Sell | 1,890 | $44.57 | $84K |
| Feb 2, 2026 | Orbimed Capital Gp Viii LlcDirector | Sell | 1,890 | $44.57 | $84K |
| Jan 22, 2026 | Winkelried JonTenPercentOwner | Sell | 250,000 | $40.00 | $10.0M |
| Dec 24, 2025 | Orbimed Capital Gp Viii LlcDirector | Sell | 33,356 | $44.55 | $1.5M |
| Dec 24, 2025 | Thompson Peter A.Director | Sell | 33,356 | $44.55 | $1.5M |
| Dec 19, 2025 | Thompson Peter A.Director | Sell | 875 | $44.49 | $39K |
| Dec 19, 2025 | Orbimed Capital Gp Viii LlcDirector | Sell | 875 | $44.49 | $39K |
| Dec 18, 2025 | Thompson Peter A.Director | Sell | 100 | $44.49 | $4K |
| Dec 18, 2025 | Orbimed Capital Gp Viii LlcDirector | Sell | 100 | $44.49 | $4K |
| Dec 17, 2025 | Thompson Peter A.Director | Sell | 900 | $44.50 | $40K |
| Dec 17, 2025 | Orbimed Capital Gp Viii LlcDirector | Sell | 900 | $44.50 | $40K |
| Dec 5, 2025 | Fitzpatrick JenniferChief Legal Officer | Sell | 10,250 | $40.52 | $415K |
| Nov 26, 2025 | Thompson Peter A.Director | Sell | 1,600 | $44.49 | $71K |
| Nov 26, 2025 | Orbimed Advisors LlcDirector | Sell | 1,600 | $44.49 | $71K |
| Nov 25, 2025 | Thompson Peter A.Director | Sell | 11,890 | $44.60 | $530K |
| Nov 25, 2025 | Orbimed Advisors LlcDirector | Sell | 11,890 | $44.60 | $530K |
| Nov 24, 2025 | Orbimed Advisors LlcDirector | Sell | 94,583 | $44.54 | $4.2M |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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