RA CAPITAL MANAGEMENT, L.P. - 30 Dec 2025 SCHEDULE 13G Report for DISC MEDICINE, INC. Common Stock, $0.0001 par value per share (IRON)

Filing Manager
RA CAPITAL MANAGEMENT, L.P.
Reporting Manager
RA Capital Management, L.P.
Security
DISC MEDICINE, INC. Common Stock, $0.0001 par value per share
Symbol
IRON
Shares outstanding
37,778,373 shares
Disclosed Ownership
2,228,924 shares
Ownership
5.9%
Form type
SCHEDULE 13G
Filing time
07 Jan 2026, 16:53:14 UTC
Date of event
30 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. 5.9% 2,228,924 0 2,228,924 /s/ Peter Kolchinsky By Peter Kolchinsky, Authorized Signatory
Peter Kolchinsky 5.9% 2,228,924 0 2,228,924 /s/ Peter Kolchinsky Peter Kolchinsky
Rajeev Shah 5.9% 2,228,924 0 2,228,924 /s/ Rajeev Shah Rajeev Shah
RA Capital Healthcare Fund, L.P. 5.9% 2,228,924 0 2,228,924 /s/ Peter Kolchinsky By RA Capital Healthcare Fund GP, LLC, its General Partner, By Peter Kolchinsky, Manager