RA CAPITAL MANAGEMENT, L.P. sold SION

October 24, 2025 · Form 4 insider transaction

RA CAPITAL MANAGEMENT, L.P. sold 66,672 shares of Sionna Therapeutics, Inc. at $39.50 per share, a transaction worth $2.63M. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 4 days after the transaction.

Direction
Disposed (sell-side)
Shares
66,672
Price
$39.50
Total value
$2.63M
RoleDirector, 10% owner
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateOctober 24, 2025
Filing dateOctober 28, 2025
Shares owned after2,257,826
OwnershipIndirect
10b5-1 planNo
AmendedNo

Footnotes

RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund, RA Capital Nexus Fund, L.P. (the "Nexus Fund"), RA Capital Nexus III Fund, L.P. (the "Nexus Fund III"), and a separately managed account (the "Account"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund, the Nexus Fund III, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.; Held directly by Nexus Fund III.

View the original Form 4 on SEC EDGAR