BROOKS GABRIEL (Chief Medical Officer) sold 22.7% of their position (28.34K shares) of SOLID BIOSCIENCES INC. on the open market

Open‑market sale worth $182.4K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

BROOKS GABRIEL

Filed: 2/2/2026ACC: 0001193125-26-034083

InsiderBROOKS GABRIELCIK 1997809

→

IssuerSOLID BIOSCIENCES INC.CIK 1707502

Officer· Chief Medical Officer

Since Feb 2026

+282.87K

Net shares

Net buyer

$182.4K

Total sold

Open market trades

0B · 1S

Total transactions

398.27K acquired · 115.41K disposed

Non-Derivative Transactions3

Common Stock

Direct

M · Option Exercise

+58.85K

Price / share

—

Trade value

—

% of position

155.0%

1/29/2026

37.97K→96.82K

Common Stock

Direct

M · Option Exercise

+28.23K

Price / share

—

Trade value

—

% of position

29.2%

1/31/2026

96.82K→125.04K

Common Stock

Direct

S · Sale

−28.34K

Price / share

$6.44

Trade value

$182.39K

% of position

22.7%

2/2/2026

125.04K→96.71K

Total

Net shares

+58.74K

Net value

-$182.39K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	1/29/2026	M · Option Exercise	+58.85K	—	—	155.0%	37.97K	96.82K
Common Stock Direct	1/31/2026	M · Option Exercise	+28.23K	—	—	29.2%	96.82K	125.04K
Common Stock Direct	2/2/2026	S · Sale	−28.34K	$6.44	$182.39K	22.7%	125.04K	96.71K
Total			+58.74K		-$182.39K

Derivative Transactions4

Performance Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

58.85K shares

−58.85K

Strike price

Held after

0.00

Exercisable

—

1/29/2026

Employee Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

207.45K shares

+207.45K

Strike price

6.60

Held after

207.45K

Exercisable

—

1/29/2026

Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

103.75K shares

+103.75K

Strike price

Held after

103.75K

Exercisable

—

1/29/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

28.23K shares

−28.23K

Strike price

Held after

84.67K

Exercisable

—

1/31/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Performance Stock Units Direct	Common Stock58.85K shares	1/29/2026	M · Option Exercise	−58.85K		—	0.00
Employee Stock Option (Right to Buy) Direct	Common Stock207.45K shares	1/29/2026	A · Award	+207.45K	6.60	—	207.45K
Restricted Stock Units Direct	Common Stock103.75K shares	1/29/2026	A · Award	+103.75K		—	103.75K
Restricted Stock Units Direct	Common Stock28.23K shares	1/31/2026	M · Option Exercise	−28.23K		—	84.67K