Ian F. Smith - 02 Jan 2026 Form 4 Insider Report for Solid Biosciences Inc. (SLDB)

Reporting relationship: Director
Issuer ticker: SLDB
Reported as of: 02 Jan 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 07 Jan 2026, 16:05:04 UTC
Prior SEC filing: 14 Oct 2025
Next SEC filing: 19 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ David Tyronne Howton as attorney-in-fact for Ian F. Smith

Key filing fact

Ian F. Smith filed Form 4 for Solid Biosciences Inc. (SLDB) on 07 Jan 2026.

Key facts

This page summarizes Ian F. Smith's Form 4 filing for Solid Biosciences Inc. (SLDB).
4 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 07 Jan 2026, 16:05.

Change

Previous filing in this sequence was filed on 14 Oct 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001197032 Primary reporting owner

SMITH IAN F

Relationship: Director
Address: C/O SOLID BIOSCIENCES INC., 500 RUTHERFORD AVENUE, THIRD FLOOR, CHARLESTOWN
Signature: /s/ David Tyronne Howton as attorney-in-fact for Ian F. Smith
Signature date: 07 Jan 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SLDB transaction

Common Stock

Options Exercise

Transaction value
Shares: +4,573
Change %: +3.6%
Price
Shares after: 131,264
Date: 06 Jan 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SLDB transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value: $0
Shares: +18,012
Change %
Price: $0.000000
Shares after: 18,012
Date: 02 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 18,012
Exercise price: $5.45
Footnotes: F2

SLDB transaction Derivative

Restricted Stock Units

Award

Transaction value: $0
Shares: +13,761
Change %
Price: $0.000000
Shares after: 13,761
Date: 02 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 13,761
Exercise price
Footnotes: F2, F3

SLDB transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -4,573
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 06 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 4,573
Exercise price
Footnotes: F1, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

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

Footnote F2

The Smith RSUs (as defined in footnote 3) and this option (together with the Smith RSUs, the "Smith Equity Awards") were granted on January 2, 2026 ("the Grant Date") and vest in equal quarterly installments with the first installment vesting three months from the Grant Date and the final installment vesting date being the date that is 12 months from the Grant Date; provided that in the event of the early termination of the Fourth Amendment to Executive Chair Agreement between the Issuer and the reporting person (the "Smith Agreement") prior to the expiration of the Term (as defined in the Smith Agreement) and/or a change in control of the Issuer, the Smith Equity Awards shall accelerate in full.

Footnote F3

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock (the "Smith RSUs").

Footnote F4

The restricted stock units were granted on January 6, 2025 and vested in equal quarterly installments beginning three months from the date of grant, with the final installment vesting 12 months from the date of grant.