Gabriel Brooks - 14 Aug 2025 Form 4 Insider Report for Solid Biosciences Inc. (SLDB)

Signature
/s/ Kimberly Cornwell as attorney-in-fact for Gabriel Brooks
Issuer symbol
SLDB
Transactions as of
14 Aug 2025
Net transactions value
$0
Form type
4
Filing time
18 Aug 2025, 16:14:14 UTC
Previous filing
18 Feb 2025
Next filing
21 Oct 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Brooks Gabriel Chief Medical Officer C/O SOLID BIOSCIENCES INC., 500 RUTHERFORD AVENUE, THIRD FLOOR, CHARLESTOWN /s/ Kimberly Cornwell as attorney-in-fact for Gabriel Brooks 18 Aug 2025 0001997809

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SLDB Employee Stock Option (Right to Buy) Award $0 +142,500 $0.000000 142,500 14 Aug 2025 Common Stock 142,500 $6.17 Direct F1
transaction SLDB Restricted Stock Units Award $0 +71,250 $0.000000 71,250 14 Aug 2025 Common Stock 71,250 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The RSUs (as defined in footnote 2) together with this option were granted on August 14, 2025 (the "Grant Date") and vest over four years, with 50% of the original number of shares vesting on the second anniversary of the Grant Date and 25% of the original number of shares annually thereafter until the fourth such anniversary.
F2 Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock (the "RSUs").