FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _________ to _________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 Commission File Number: 001-38360 Solid Biosciences Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 90-0943402 (Stat ...