Solid Biosciences Inc. — Director's Dealing 2026

Jan 13, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Solid Biosciences Inc. (SLDB)
CIK: 0001707502
Period of Report: 2026-01-09

Reporting Person: Tan Kevin (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-01-09	Common Stock	M	11250	—	Acquired	51804	Direct
2026-01-13	Common Stock	S	5704	$5.27	Disposed	46100	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-01-09	Restricted Stock Units	$	M	11250	Disposed		Common Stock (11250)	Direct

Footnotes

F1: Restricted stock units convert to common stock on a one-for-one basis.

F2: Includes 4,152 and 4,152 shares of common stock acquired under the Solid Biosciences Inc. Employee Stock Purchase Plan on May 30, 2025 and November 28, 2025, respectively.

F3: This sale was made to cover withholding taxes following the vesting of previously granted RSUs pursuant to a durable automatic sale instruction letter adopted by Mr. Tan on August 15, 2024 effecting the sell-to-cover election. The sale does not represent a discretionary trade by Mr. Tan.

F4: The restricted stock units were granted on January 9, 2023 (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.