Fairmount Funds Management LLC - 13 Nov 2025 SCHEDULE 13D/A Report for Cogent Biosciences, Inc. Common Stock, $0.001 par value (COGT)

Filing Manager
Fairmount Funds Management LLC
Reporting Manager
Fairmount Funds Management LLC
Security
Cogent Biosciences, Inc. Common Stock, $0.001 par value
Symbol
COGT
Shares outstanding
160,377,960 shares
Disclosed Ownership
15,877,418 shares
Ownership
9.9%
Form type
SCHEDULE 13D/A
Filing time
17 Nov 2025, 16:36:40 UTC
Date of event
13 Nov 2025
Previous filing
14 Jul 2025
SEC
View on sec.gov

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Fairmount Funds Management LLC 9.9% 15,877,418 0 15,877,418 /s/ Peter Harwin Peter Harwin, Managing Member 0001802528
Fairmount Healthcare Fund II GP LLC 9.9% 15,877,418 0 15,877,418 /s/ Peter Harwin Peter Harwin, Managing Member 0001830382