HOWTON DAVID T

PrivateCIK: 1529297
Location

CAMBRIDGE, MA

Senior insider sale

Chief Operating Officer at SOLID BIOSCIENCES INC. — senior position signals high conviction

$390.0K

61.60K shares

What this filing means

HOWTON DAVID T plans to sell 61.60K shares of SOLID BIOSCIENCES INC. valued at approximately $390.0K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

InsiderHOWTON DAVID TCIK 1529297
IssuerSOLID BIOSCIENCES INC.CIK 1707502
Officer· Chief Operating Officer
Since Feb 2026
61.60K
Shares to sell
$390.0K
Approx. market value
18.89K
Acquired (3 months)
1
Planned
2 completed
Securities Acquired — Last 3 Months1
Sort

Settlement of vested restricted stock units

Compensation

2/4/2026
18.89K
Total acquired18.89K
Planned & Completed Dispositions3
Sort

Completed

Completed

Units to sell

37.77K

Market value

$243.1K

2/2/2026
Completed

Units to sell

4.93K

Market value

$25.2K

12/3/2025

Planned — Approximate Date

NASDAQPlanned

Units to sell

18.89K

Market value

$121.7K

2/4/2026
Total

Units

61.60K

Value

$390.0K

HOWTON DAVID T — Planned Insider Sale (Form 144) | Finecho