Form 4 Tracker
Sionna Therapeutics, Inc.
SION

21 insider filings · Latest: Jun 17, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Nov 19, 2025Nov 19 10:16 PMBLACKWELL PARTNERS LLC - SERIES A
Proposed Sale
14,334$38.41$550.6K

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Nov 19, 2025Nov 19 10:10 PMRA Capital Nexus Fund, L.P.
Proposed Sale
18,696$38.41$718.1K

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Nov 19, 2025Nov 19 10:04 PMRA Capital Nexus Fund III, L.P.
Proposed Sale
12,134$38.41$466.1K

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Nov 18, 2025Nov 18 10:22 PMBLACKWELL PARTNERS LLC - SERIES A
Proposed Sale
2,092$39.04$81.7K

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Nov 18, 2025Nov 18 10:17 PMRA Capital Nexus Fund, L.P.
Proposed Sale
2,728$39.04$106.5K

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Nov 18, 2025Nov 18 10:09 PMRA Capital Nexus Fund III, L.P.
Proposed Sale
1,770$39.04$69.1K

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Nov 18, 2025Nov 18 9:58 PMRA Capital Healthcare Fund LP
Proposed Sale
332$39.04$13.0K

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Nov 17, 2025Nov 17 10:12 PMBLACKWELL PARTNERS LLC - SERIES A
Proposed Sale
24,772$39.93$989.1K

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Nov 17, 2025Nov 17 10:04 PMRA Capital Nexus Fund, L.P.
Proposed Sale
32,310$39.93$1.3M

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Nov 17, 2025Nov 17 9:56 PMRA Capital Nexus Fund III, L.P.
Proposed Sale
20,969$39.93$837.3K

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Nov 17, 2025Nov 17 9:46 PMRA Capital Healthcare Fund LP
Proposed Sale
3,936$39.93$157.2K

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Oct 28, 2025Oct 28 9:13 PMRA Capital Nexus Fund III, L.P.
Proposed Sale
17,118$39.45$675.3K

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Oct 28, 2025Oct 28 9:07 PMRA Capital Healthcare Fund LP
Proposed Sale
3,624$39.45$143.0K

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Oct 28, 2025Oct 28 9:05 PMRA Capital Nexus Fund, L.P.
Proposed Sale
31,392$39.45$1.2M

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Oct 28, 2025Oct 28 8:57 PMBLACKWELL PARTNERS LLC - SERIES A
Proposed Sale
10,476$39.45$413.3K

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Oct 24, 2025Oct 24 10:05 PMRA Capital Nexus Fund, L.P.
Proposed Sale
122,271$39.21$4.8M

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Oct 24, 2025Oct 24 10:00 PMRA Capital Nexus Fund III, L.P.
Proposed Sale
66,672$39.21$2.6M

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Oct 24, 2025Oct 24 9:53 PMRA Capital Healthcare Fund LP
Proposed Sale
14,116$39.21$553.5K

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Oct 24, 2025Oct 24 9:39 PMBLACKWELL PARTNERS LLC - SERIES A
Proposed Sale
107,941$39.21$4.2M

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Oct 21, 2025Oct 21 8:22 PMAtlas Venture Opportunity Fund II, L.P.
Proposed Sale
15,418$32.20$496.5K

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Jun 17, 2026Jun 18 9:58 PMLaurie StelzerDirector
Grant/Award
17,340$36.7317,340(D)

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Jun 17, 2026Jun 18 9:48 PMJoanne L. VineyDirector
Grant/Award
17,340$36.7317,340(D)

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Jun 17, 2026Jun 18 9:45 PMPeter A. ThompsonDirector
Grant/Award
17,340$36.7317,340(D)

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Jun 17, 2026Jun 18 9:41 PMRA CAPITAL MANAGEMENT, L.P.Director, 10% Owner
Grant/Award
17,340$36.7317,340(I)

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Jun 17, 2026Jun 18 9:39 PMMarcella K. RuddyDirector
Grant/Award
17,340$36.7317,340(D)

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Jun 17, 2026Jun 18 9:37 PMJoshua ResnickDirector
Grant/Award
17,340$36.7317,340(D)

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Jun 17, 2026Jun 18 9:35 PMHarold Edward FlemingDirector
Grant/Award
17,340$36.7317,340(D)

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Jun 17, 2026Jun 18 9:33 PMPaul J ClancyDirector
Grant/Award
17,340$36.7317,340(D)

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Jun 17, 2026Jun 18 9:29 PMBruce BoothDirector
Grant/Award
17,340$36.7317,340(D)

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Mar 5, 2026Mar 6 11:56 PMJennifer FitzpatrickChief Legal Officer
Option Exercise
10,250$6.1150,935(D)

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