RA CAPITAL MANAGEMENT, L.P. - 13 Mar 2026 SCHEDULE 13D/A Report for SOLID BIOSCIENCES INC. Common Stock, $0.001 par value per share (SLDB)

Filing Manager
RA CAPITAL MANAGEMENT, L.P.
Reporting Manager
RA Capital Management, L.P.
Security
SOLID BIOSCIENCES INC. Common Stock, $0.001 par value per share
Symbol
SLDB
Shares outstanding
94,078,343 shares
Disclosed Ownership
9,313,756 shares
Ownership
9.9%
Form type
SCHEDULE 13D/A
Filing time
17 Mar 2026, 18:50:23 UTC
Date of event
13 Mar 2026
Previous filing
21 Feb 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% 9,313,756 0 9,313,756 /s/ Peter Kolchinsky By Peter Kolchinsky, Authorized Signatory 0001346824
Peter Kolchinsky 9.9% 9,313,756 0 9,313,756 /s/ Peter Kolchinsky Peter Kolchinsky 0001384859
Rajeev Shah 9.9% 9,313,756 0 9,313,756 /s/ Rajeev Shah Rajeev Shah 0001619841
RA Capital Healthcare Fund, L.P. 9.8% 9,175,526 0 9,175,526 /s/ Peter Kolchinsky By RA Capital Healthcare Fund GP, LLC, its General Partner, By Peter Kolchinsky, Manager 0001315082