Fairmount Funds Management LLC Discloses Investment at Korsana Biosciences with 19.99% Stake

Fairmount Funds Management LLC disclosed a 19.99% stake in Korsana Biosciences, Inc. common stock. The firm filed a Schedule 13D on September 11, 2026, following Korsana’s September 8, 2026 merger and related financing steps. The position gives Fairmount voting and dispositive power over more than…