RA CAPITAL MANAGEMENT, L.P. (Director, 10% Owner at Sionna Therapeutics, Inc.) just sold $21.84M of $SION across 2 transactions

Filed with the SEC on 2026-09-21 (Form 4). - Insider: RA CAPITAL MANAGEMENT, L.P. — Director, 10% Owner - Company: Sionna Therapeutics, Inc. ($SION) - Transactions: - 2026-09-17: Sale 3,415,011 shares @ $6.32 ($21.58M) - 2026-09-17: Sale 33,800 shares @ $7.46 ($252.1K) - Value: $21.84M Sourced directly from SEC EDGAR. I track insider, congressional, and institutional (13F) filings like this at Capitol Tracker.