Harahan Jessie files Form 144 to sell 4,134 SLDB shares (SLDB)

Rhea-AI Filing Summary

Harahan Jessie submitted a Form 144 to sell 4,134 shares of common stock related to the settlement of vested restricted stock units, with settlement dated 02/18/2026. The filing lists prior dispositions in the past three months of 4,483 shares on 12/03/2025, 26,535 shares on 02/02/2026, and 12,348 shares on 02/04/2026.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	4134	24073.52	83412695	02/18/2026	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	02/18/2026	Settlement of vested restricted stock units	Issuer			4134	02/18/2026	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
Harahan Jessie C/O SOLID BIOSCIENCES INC. 500 Rutherford Ave Charlestown MA 02129	Common Stock	12/03/2025	4483	22908.13
Harahan Jessie C/O SOLID BIOSCIENCES INC. 500 Rutherford Ave Charlestown MA 02129	Common Stock	02/02/2026	26535	170803.14
Harahan Jessie C/O SOLID BIOSCIENCES INC. 500 Rutherford Ave Charlestown MA 02129	Common Stock	02/04/2026	12348	79541.32

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Harahan Jessie's Form 144 with SLDB disclose?

The Form 144 discloses a proposed sale of 4,134 shares tied to the settlement of vested restricted stock units on 02/18/2026. It also reports prior dispositions of 4,483; 26,535; and 12,348 shares on listed dates.

How many shares are listed for sale in the Form 144 for SLDB?

The filing lists 4,134 shares to be sold in connection with the settlement of vested restricted stock units on 02/18/2026. This is the amount shown under "Securities To Be Sold."

What prior sales does the Form 144 report for the seller?

Three prior dispositions are reported: 4,483 shares on 12/03/2025, 26,535 shares on 02/02/2026, and 12,348 shares on 02/04/2026

Are the shares being sold by Harahan Jessie from compensation?

Yes — the filing ties the 4,134-share sale to compensation, specifically the settlement of vested restricted stock units, with settlement and sale activity dated 02/18/2026.

Through which market or broker is the sale recorded in the excerpt?

The excerpt references NASDAQ and a broker line showing ETRADE FINANCIAL CORPORATION, with the settlement date 02/18/2026 listed alongside the security details.