RA CAPITAL MANAGEMENT, L.P. - 06 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
97,615,414 shares
Disclosed Ownership
9,663,926 shares
Ownership
9.9%
Form type
SCHEDULE 13D/A
Filing time
10 Mar 2026, 16:38:02 UTC
Date of event
06 Mar 2026
Previous filing
14 Aug 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% 9,663,926 0 9,663,926 /s/ Peter Kolchinsky By Peter Kolchinsky, Authorized Signatory 0001346824
Peter Kolchinsky 9.9% 9,663,926 0 9,663,926 /s/ Peter Kolchinsky Peter Kolchinsky 0001384859
Rajeev Shah 9.9% 9,663,926 0 9,663,926 /s/ Rajeev Shah Rajeev Shah 0001619841
RA Capital Healthcare Fund, L.P. 9.8% 9,525,696 0 9,525,696 /s/ Peter Kolchinsky By RA Capital Healthcare Fund GP, LLC, its General Partner, By Peter Kolchinsky, Manager 0001315082