RA CAPITAL MANAGEMENT, L.P. - 31 Dec 2025 SCHEDULE 13G/A Report for FULCRUM THERAPEUTICS, INC. Common Stock, $0.001 par value per share (FULC)

Filing Manager
RA CAPITAL MANAGEMENT, L.P.
Reporting Manager
RA Capital Management, L.P.
Security
FULCRUM THERAPEUTICS, INC. Common Stock, $0.001 par value per share
Symbol
FULC
Shares outstanding
67,171,444 shares
Disclosed Ownership
6,649,973 shares
Ownership
9.9%
Form type
SCHEDULE 13G/A
Filing time
17 Feb 2026, 16:29:29 UTC
Date of event
31 Dec 2025
Previous filing
10 Dec 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
RA Capital Management, L.P. 9.9% 6,649,973 0 6,649,973 /s/ Peter Kolchinsky By Peter Kolchinsky, Authorized Signatory
Peter Kolchinsky 9.9% 6,649,973 0 6,649,973 /s/ Peter Kolchinsky Peter Kolchinsky
Rajeev Shah 9.9% 6,649,973 0 6,649,973 /s/ Rajeev Shah Rajeev Shah
RA Capital Healthcare Fund, L.P. 9.9% 6,649,973 0 6,649,973 /s/ Peter Kolchinsky By RA Capital Healthcare Fund GP, LLC, its General Partner, By Peter Kolchinsky, Manager