Form 4 for SLDB Solid Biosciences Inc.

Accepted 2026-01-13 00:00:00 ET · period of report 2026-01-09 · accession 0001193125-26-011873 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
DT	2026-01-13	2026-01-09	SLDB	Tan Kevin	CFO, Treas	M - OptEx	—	+11.2K	51.8K	+28%	—
DT	2026-01-13	2026-01-13	SLDB	Tan Kevin	CFO, Treas	S - Sale+OE	$5.27	-5,704	46.1K	-11%	-$30.1K
DT	2026-01-13	2026-01-09	SLDB	Tan Kevin	CFO, Treas	M - OptEx	$0.00	-11.2K	11.2K	-50%	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-01-09	M	A	11,250	—	51,804	D	—	—	(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.
2	Common	Common Stock	2026-01-13	S	D	5,704	$5.27	46,100	D	—	—	(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. (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.
3	Derivative	Restricted Stock Units	2026-01-09	M	D	11,250	$0.00	11,250	D	— · — to —	11,250 Common Stock	(F1) Restricted stock units convert to common stock on a one-for-one basis. (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.