HOWTON DAVID T

PrivateCIK: 1529297
Location

CAMBRIDGE, MA

Senior insider sale

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

$268.3K

42.70K shares

What this filing means

HOWTON DAVID T plans to sell 42.70K shares of SOLID BIOSCIENCES INC. valued at approximately $268.3K. 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
42.70K
Shares to sell
$268.3K
Approx. market value
37.77K
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months1
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Settlement of performance shares

Compensation

2/2/2026
37.77K
Total acquired37.77K
Planned & Completed Dispositions2
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Completed

Completed

Units to sell

4.93K

Market value

$25.2K

12/3/2025

Planned — Approximate Date

NASDAQPlanned

Units to sell

37.77K

Market value

$243.1K

2/2/2026
Total

Units

42.70K

Value

$268.3K

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