Sionna Therapeutics, Inc.
SION
31 insider filings · Latest: Sep 17, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | Sep 21 10:56 PM | RA CAPITAL MANAGEMENT, L.P.Director, 10% Owner | Sale | 3,448,811 | $6.33 | $21.8M | 3,448,812(I) | View → |
| Sep 17, 2026 | Sep 17 9:10 PM | RA Capital Healthcare Fund, L.P. | Proposed Sale | 3,448,811 | $6.33 | $21.8M | — | View → |
| Jul 7, 2026 | Jul 9 8:47 PM | Peter A. ThompsonDirector | Sale | 85,918 | $44.86 | $3.9M | 2,469,959(I) | View → |
| Jul 7, 2026 | Jul 9 8:44 PM | ORBIMED ADVISORS LLCDirector | Sale | 85,918 | $44.86 | $3.9M | 2,469,959(I) | View → |
| Jul 6, 2026 | Jul 7 8:38 PM | Jennifer FitzpatrickChief Legal Officer | Sale | 10,250 | $43.60 | $446.9K | 0(D) | View → |
| Jul 6, 2026 | Jul 6 8:39 PM | JENNIFER FITZPATRICK | Proposed Sale | 10,250 | $43.99 | $450.9K | — | View → |
| Jun 30, 2026 | Jul 2 8:45 PM | Peter A. ThompsonDirector | Sale | 115,844 | $45.50 | $5.3M | 2,555,877(I) | View → |
| Jun 30, 2026 | Jul 2 8:42 PM | ORBIMED ADVISORS LLCDirector | Sale | 115,844 | $45.50 | $5.3M | 2,555,877(I) | View → |
| May 29, 2026 | Jun 1 4:39 PM | OrbiMed Private Investments VIII, LP | Proposed Sale | 210,876 | $42.82 | $9.0M | — | View → |
| May 27, 2026 | May 30 1:02 AM | Peter A. ThompsonDirector | Sale | 101 | $44.49 | $4.5K | 2,671,721(I) | View → |
| May 27, 2026 | May 30 12:57 AM | ORBIMED ADVISORS LLCDirector | Sale | 101 | $44.49 | $4.5K | 2,671,721(I) | View → |
| May 29, 2026 | May 29 10:44 PM | OrbiMed Private Investments VIII, LP | Proposed Sale | 1,082,480 | $42.80 | $46.3M | — | View → |
| May 11, 2026 | May 11 11:14 PM | Peter A. ThompsonDirector | Sale | 184,639 | $46.22 | $8.5M | 2,671,822(I) | View → |
| May 8, 2026 | May 11 11:14 PM | Peter A. ThompsonDirector | Sale | 59,767 | $44.58 | $2.7M | 2,856,461(I) | View → |
| May 7, 2026 | May 11 11:14 PM | Peter A. ThompsonDirector | Sale | 48,546 | $44.61 | $2.2M | 2,916,228(I) | View → |
| May 11, 2026 | May 11 10:58 PM | ORBIMED ADVISORS LLCDirector | Sale | 184,639 | $46.22 | $8.5M | 2,671,822(I) | View → |
| May 8, 2026 | May 11 10:58 PM | ORBIMED ADVISORS LLCDirector | Sale | 59,767 | $44.58 | $2.7M | 2,856,461(I) | View → |
| May 7, 2026 | May 11 10:58 PM | ORBIMED ADVISORS LLCDirector | Sale | 48,546 | $44.61 | $2.2M | 2,916,228(I) | View → |
| Apr 18, 2026 | Apr 22 12:42 AM | Peter A. ThompsonDirector | Sale | 2,948 | $44.52 | $131.2K | 2,964,774(I) | View → |
| Apr 17, 2026 | Apr 22 12:42 AM | Peter A. ThompsonDirector | Sale | 52,397 | $44.68 | $2.3M | 2,967,722(I) | View → |
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Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | Sep 18 8:59 PM | Elena RidloffCFO and CBO | Grant/Award | 165,440 | — | 165,440(D) | View → |
| Sep 17, 2026 | Sep 18 8:59 PM | Elena RidloffCFO and CBO | Disposition | 165,440 | $39.21 | 0(D) | View → |
| Sep 17, 2026 | Sep 18 8:58 PM | Charlotte MckeeCMO and Head of R&D | Disposition | 155,700 | $39.21 | 0(D) | View → |
| Sep 17, 2026 | Sep 18 8:58 PM | Charlotte MckeeCMO and Head of R&D | Grant/Award | 155,700 | — | 155,700(D) | View → |
| Sep 17, 2026 | Sep 18 8:56 PM | Jennifer FitzpatrickCLO and Head of Program Mgmt. | Disposition | 103,140 | $39.21 | 0(D) | View → |
| Sep 17, 2026 | Sep 18 8:56 PM | Jennifer FitzpatrickCLO and Head of Program Mgmt. | Grant/Award | 103,140 | — | 103,140(D) | View → |
| Sep 17, 2026 | Sep 18 8:52 PM | Michael CloonanDirector, President & CEO | Grant/Award | 436,100 | — | 436,100(D) | View → |
| Sep 17, 2026 | Sep 18 8:52 PM | Michael CloonanDirector, President & CEO | Disposition | 436,100 | $39.21 | 0(D) | View → |
| Jul 6, 2026 | Jul 7 8:38 PM | Jennifer FitzpatrickChief Legal Officer | Option Exercise | 10,250 | $6.11 | 40,685(D) | View → |
| Jun 17, 2026 | Jun 18 9:58 PM | Laurie StelzerDirector | Grant/Award | 17,340 | $36.73 | 17,340(D) | View → |
| Jun 17, 2026 | Jun 18 9:48 PM | Joanne L. VineyDirector | Grant/Award | 17,340 | $36.73 | 17,340(D) | View → |
| Jun 17, 2026 | Jun 18 9:45 PM | Peter A. ThompsonDirector | Grant/Award | 17,340 | $36.73 | 17,340(D) | View → |
| Jun 17, 2026 | Jun 18 9:41 PM | RA CAPITAL MANAGEMENT, L.P.Director, 10% Owner | Grant/Award | 17,340 | $36.73 | 17,340(I) | View → |
| Jun 17, 2026 | Jun 18 9:39 PM | Marcella K. RuddyDirector | Grant/Award | 17,340 | $36.73 | 17,340(D) | View → |
| Jun 17, 2026 | Jun 18 9:37 PM | Joshua ResnickDirector | Grant/Award | 17,340 | $36.73 | 17,340(D) | View → |
| Jun 17, 2026 | Jun 18 9:35 PM | Harold Edward FlemingDirector | Grant/Award | 17,340 | $36.73 | 17,340(D) | View → |
| Jun 17, 2026 | Jun 18 9:33 PM | Paul J ClancyDirector | Grant/Award | 17,340 | $36.73 | 17,340(D) | View → |
| Jun 17, 2026 | Jun 18 9:29 PM | Bruce BoothDirector | Grant/Award | 17,340 | $36.73 | 17,340(D) | View → |
| Mar 5, 2026 | Mar 6 11:56 PM | Jennifer FitzpatrickChief Legal Officer | Option Exercise | 10,250 | $6.11 | 50,935(D) | View → |