Fairmount Funds Management LLC - 04 Dec 2025 SCHEDULE 13D/A Report for Crescent Biopharma, Inc. Ordinary Shares, $0.001 par value (CBIO)

Filing Manager
Fairmount Funds Management LLC
Reporting Manager
Fairmount Funds Management LLC
Security
Crescent Biopharma, Inc. Ordinary Shares, $0.001 par value
Symbol
CBIO
Shares outstanding
30,455,920 shares
Disclosed Ownership
5,643,482 shares
Ownership
19%
Form type
SCHEDULE 13D/A
Filing time
08 Dec 2025, 16:30:27 UTC
Date of event
04 Dec 2025
Previous filing
23 Jun 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Fairmount Funds Management LLC 19% 5,643,482 0 5,643,482 /s/ Peter Harwin Peter Harwin, Managing Member 0001802528
Fairmount Healthcare Fund II L.P. 19% 5,643,482 0 5,643,482 /s/ Peter Harwin Peter Harwin, Managing Member 0001769651
Peter Evan Harwin 19% 5,643,482 0 5,643,482 /s/ Peter Evan Harwin Peter Evan Harwin 0001663607
Tomas Kiselak 19% 5,643,482 0 5,643,482 /s/ Tomas Kiselak Tomas Kiselak 0001830177