RA CAPITAL MANAGEMENT, L.P. sold SEPN

August 12, 2026 · Form 4 insider transaction

RA CAPITAL MANAGEMENT, L.P. sold 746,500 shares of Septerna, Inc. at $42.50 per share, a transaction worth $31.73M. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 2 days after the transaction.

Direction
Disposed (sell-side)
Shares
746,500
Price
$42.50
Total value
$31.73M
RoleDirector, 10% owner
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateAugust 12, 2026
Filing dateAugust 14, 2026
Shares owned after4,777,415
OwnershipIndirect
10b5-1 planNo
AmendedNo

Footnotes

RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund") and RA Capital Nexus Fund III, L.P. (the "Nexus Fund III"). 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. Each of the Adviser, the Adviser GP, the Fund, the Nexus Fund III, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein.; Held directly by the Fund.

View the original Form 4 on SEC EDGAR