Adage Capital Partners Discloses 5.0% Stake in Solid Biosciences

TL;DR

**Adage Capital just revealed a 5% stake in Solid Biosciences, signaling institutional confidence.**

AI Summary

Adage Capital Partners, L.P., a major investment firm, reported on February 7, 2024, that it holds a significant stake in Solid Biosciences Inc. (NASDAQ: SLDB). As of January 8, 2024, Adage Capital Partners, L.P. beneficially owns 3,000,000 shares of Solid Biosciences' Common Stock, representing 5.0% of the company's outstanding shares. This filing indicates a notable institutional investor's confidence in the biotech company, which could signal potential stability or growth prospects for current and prospective shareholders.

Why It Matters

This filing reveals a major institutional investor's belief in Solid Biosciences, which can influence market perception and potentially attract other investors, impacting the stock's valuation.

Risk Assessment

Risk Level: low — The filing of an SC 13G by an institutional investor generally indicates a passive stake, which is not typically a high-risk event for the company.

Analyst Insight

A smart investor would monitor Solid Biosciences Inc. (SLDB) for potential positive market reaction and increased institutional interest, considering Adage Capital Partners, L.P.'s new 5.0% stake as a vote of confidence.

Key Numbers

• 3,000,000 — Shares Owned (Adage Capital Partners, L.P.'s beneficial ownership in Solid Biosciences Inc.)
• 5.0% — Percentage of Class (The stake Adage Capital Partners, L.P. holds in Solid Biosciences Inc.'s common stock.)
• $0.001 — Par Value per Share (The par value of Solid Biosciences Inc.'s Common Stock.)

Key Players & Entities

• Adage Capital Partners, L.P. (company) — reporting person, institutional investor
• Solid Biosciences Inc. (company) — subject company, biotech firm
• 3,000,000 (dollar_amount) — number of shares beneficially owned
• 5.0% (dollar_amount) — percentage of class outstanding
• January 8, 2024 (date) — date of event requiring filing
• February 7, 2024 (date) — filing date

Forward-Looking Statements

• Solid Biosciences Inc. stock may experience increased investor interest due to Adage Capital's significant stake. (Solid Biosciences Inc.) — medium confidence, target: Q2 2024

FAQ

Key Financial Figures

• $0.001 — me of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securitie

Filing Documents

• p24-0741sc13.htm (SC 13G) — 96KB
• 0000902664-24-001231.txt ( ) — 98KB

(a)

Item 1(a). NAME OF ISSUER The name of the issuer is Solid Biosciences Inc., (the “ Company ”).

(b)

Item 1(b). ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICES The Company’s principal executive offices are located at 500 Rutherford Avenue, Third Floor, Charlestown, MA 02129.

(a)

Item 2(a). NAME OF PERSON FILING This statement is filed by: (i) Adage Capital Partners, L.P., a Delaware limited partnership (“ ACP ”) with respect to the Common Stock directly owned by it; (ii) Adage Capital Partners GP, L.L.C., a limited liability company organized under the laws of the State of Delaware (“ ACPGP ”), as general partner of ACP with respect to the Common Stock directly owned by ACP; (iii) Adage Capital Management, L.P., a Delaware limited partnership (“ ACM ”), as the investment manager of ACP, with respect to the Common Stock directly owned by ACP; (iv) Robert Atchinson (“ Mr. Atchinson ”), as (1) managing member of Adage Capital Advisors, L.L.C., a limited liability company organized under the laws of the State of Delaware (“ ACA ”), managing member of ACPGP and (2) managing member of Adage Capital Partners LLC, a Delaware limited liability company (“ ACPLLC ”), general partner of ACM, with respect to the Common Stock directly owned by ACP; and (v) Phillip Gross (“ Mr. Gross ”), as (1) managing member of ACA, managing member of ACPGP and (2) managing member of ACPLLC, general partner of ACM, with respect to the Common Stock directly owned by ACP. The foregoing persons are hereinafter sometimes collectively referred to as the “ Reporting Persons .” Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party. The filing of this statement should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of the securities reported herein.

(b)

Item 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE The address of the business office of each of the Reporting Persons is 200 Clarendon Street, 52nd Floor, Boston, Massachusetts 02116.

(c)

Item 2(c). CITIZENSHIP ACP and ACM are limited partnerships organized under the laws of the State of Delaware. ACPGP is a limited liability company organized under the laws of the State of Delaware. Messrs. Gross and Atchinson are citizens of the United States.

(d)

Item 2(d). TITLE OF CLASS OF SECURITIES Common Stock, par value $0.001 per share (the “ Common Stock ”). CUSIP No. 83422E204 13G Page 8 of 11 Pages

(e)

Item 2(e). CUSIP NUMBER 83422E204 Item 3. IF THIS STATEMENT IS FILED PURSUANT TO Rules 13d-1(b), OR 13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A: (a) Broker or dealer registered under Section 15 of the Act; (b) Bank as defined in Section 3(a)(6) of the Act; (c) Insurance company as defined in Section 3(a)(19) of the Act; (d) Investment company registered under Section 8 of the Investment Company Act of 1940; (e) An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f) An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act; (j) A non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J); (k) Group, in accordance with Rule 13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J), please specify the type of institution: Not applicable . Item 4. The information required by Items 4(a) – (c) is set forth in Rows (5) – (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The percentage set forth in this Schedule 13G is calculated based upon 37,439,038 Common Stock outstanding as of January 18, 2024, as reported in the Company’s Registration Statement on Form S-3 filed with the Securities and Exchange Commission on January 30, 2024. Item 5. Not applicable. CUSIP No. 83422E204 13G Page 9 of 11 Pages Item 6. Not applicable. Item 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHIC

SIGNATURES

SIGNATURES After reasonable inquiry and to the best of his or its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. DATE: February 7, 2024 ADAGE CAPITAL PARTNERS, L.P. By: Adage Capital Partners GP, L.L.C., its general partner By: Adage Capital Advisors, L.L.C., its managing member /s/ Robert Atchinson Name: Robert Atchinson Title: Managing Member ADAGE CAPITAL PARTNERS GP, L.L.C. By: Adage Capital Advisors, L.L.C., its managing member /s/ Robert Atchinson Name: Robert Atchinson Title: Managing Member ADAGE CAPITAL MANAGEMENT, L.P. By: Adage Capital Partners LLC, its general partner /s/ Robert Atchinson Name: Robert Atchinson Title: Managing Member /s/ Robert Atchinson ROBERT ATCHINSON, individually /s/ Phillip Gross PHILLIP GROSS, individually CUSIP No. 83422E204 13G Page 11 of 11 Pages EXHIBIT 1 JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate. DATE: February 7, 2024 ADAGE CAPITAL PARTNERS, L.P. By: Adage Capital Partners GP, L.L.C., its general partner By: Adage Capital Advisors, L.L.C., its managing member /s/ Robert Atchinson Name: Robert Atchinson Title: Managing Member ADAGE CAPI

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View this SC 13G filing on SEC EDGAR