Form 4 Tracker
Sionna Therapeutics, Inc.
SION

10 insider filings · Latest: May 7, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
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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Oct 21, 2025Oct 21 8:21 PMAtlas Venture Fund XI, LP
Proposed Sale
73,460$32.20$2.4M

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Oct 21, 2025Oct 21 8:19 PMMICHAEL CLOONAN
Proposed Sale
99,800$32.20$3.2M

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Oct 20, 2025Oct 20 8:46 PMAtlas Venture Fund XI, LP
Proposed Sale
46,273$31.93$1.5M

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Oct 20, 2025Oct 20 8:46 PMAtlas Venture Opportunity Fund II, L.P.
Proposed Sale
9,712$31.93$310.1K

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Mar 5, 2026Mar 6 11:56 PMJennifer FitzpatrickChief Legal Officer
Option Exercise
10,250$6.1150,935(D)

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