Solid Biosciences Inc. — Director's Dealing 2026

Feb 19, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Solid Biosciences Inc. (SLDB)
CIK: 0001707502
Period of Report: 2026-02-13

Reporting Person: Howton David T (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-13	Common Stock	M	14687	—	Acquired	112546	Direct
2026-02-18	Common Stock	S	7469	$5.8233	Disposed	105077	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-13	Restricted Stock Units	$	M	14687	Disposed		Common Stock (14687)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock (the "RSUs").

F2: This sale was made to cover withholding taxes following the vesting of the previously granted RSUs pursuant to a durable automatic sales instruction letter adopted by Mr. Howton on August 16, 2024 effecting the sell-to-cover election. The sale does not represent a discretionary trade by Mr. Howton.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.23 to $6.14, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) to this Form.

F4: The RSUs were granted on February 13, 2024 (the "Grant Date") and vest over four years, with 25% of the original number of shares vesting on each anniversary of the Grant Date until the fourth such anniversary.