Solid Biosciences Inc. SEC Filing

Solid Biosciences insider David T. Howton has filed a notice of proposed stock sales under Rule 144.

Accepted by SEC EDGAR 02/02/2026 - 08:01 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Solid Biosciences insider David T. Howton has filed a notice of proposed stock sales under Rule 144. The filing covers 37,771 shares of common stock with an aggregate market value of $243,128.15, to be sold through E*TRADE Financial Corporation on NASDAQ around 02/02/2026.

The shares were acquired on 02/02/2026 via settlement of performance shares as compensation from the issuer. Over the prior three months, the same insider sold 4,932 common shares on 12/03/2025 for gross proceeds of $25,202.52.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001529297
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Solid Biosciences Inc.
SEC File Number	001-38360
Address of Issuer	500 Rutherford Avenue Charlestown MASSACHUSETTS 02129
Phone	(617)-337-4680
Name of Person for Whose Account the Securities are To Be Sold	Howton David T
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	ETRADE FINANCIAL CORPORATION 3 EDISON DRIVE ALPHARETTA GA 30005	37771	243128.15	82561235	02/02/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	02/02/2026	Settlement of performance shares	Issuer			37771	02/02/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Howton David T. C/O SOLID BIOSCIENCES INC. 500 RUTHERFORD AVENUE, THIRD FLOOR CHARLESTOWN MA 02129	Common Stock	12/03/2025	4932	25202.52

144: Remarks and Signature

Remarks	The sale reported on this Form 144 was made to cover witholding taxes following the vesting of previously granted restricted stock units pursuant to a durable sale instruction letter adopted by Mr. Howton on August 16, 2024 effecting the sell-cover-election. The sale does not represent a discretionary trade by Mr. Howton.
Date of Notice	02/02/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/16/2024
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Kimberly Cornwell as attorney-in-fact for David Tyronne Howton
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)