X0306 4 2023-03-02 0 0001707502 Solid Biosciences Inc. SLDB 0001727460 Ganot Ilan C/O SOLID BIOSCIENCES INC. 500 RUTHERFORD AVENUE, THIRD FLOOR CHARLESTOWN MA 02129 1 0 0 0 Common Stock 2023-03-02 4 M 0 1584 A 86175 D Common Stock 19394 I See Footnote Common Stock 1378 I Wife Restricted Stock Units 2023-03-02 4 M 0 1584 0.00 D Common Stock 1584 4749 D Restricted stock units convert into common stock on a one-for-one basis. Represents 82,133 shares held by Mr. Ganot as an individual, and 4,042 shares held by Mr. Ganot and Annie Ganot as joint tenants with right of survivorship. Represents 19,394 shares held by Adam Ganot and Annie Ganot, and their successors, as the trustees for the Ilan Ganot 2017 Irrevocable Trust dated March 3, 2017. On December 2, 2022 (the "Grant Date"), Mr. Ganot was granted 6,333 restricted stock units, vesting in equal quarterly installments with the first installment vesting three months from the Grant Date and the final installment vesting date being the date that is 12 months from the Grant Date; provided that in the event of a change in control the restricted stock units shall accelerate in full. /s/ by David Tyrone Howton as attorney-in-fact for Ilan Ganot 2023-03-06