SEC Form S-8 filed by Fulcrum Therapeutics Inc.

As filed with the Securities and Exchange Commission on February 24, 2026

Registration No. 333-   

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

FULCRUM THERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)

2019 Stock Incentive Plan

2019 Employee Stock Purchase Plan

(Full title of the plan)

Alex C. Sapir

President and Chief Executive Officer

Fulcrum Therapeutics, Inc.

26 Landsdowne Street

Cambridge, Massachusetts 02139

(Name and address of agent for service)

(617) 651-8851

(Telephone number, including area code, of agent for service)

Copies to:

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

EXPLANATORY NOTE

Fulcrum Therapeutics, Inc. (“Fulcrum”) is filing this Registration Statement on Form S-8 for the purpose of registering an additional (i) 2,000,000 shares of its common stock, $0.001 par value per share (the “Common Stock”) under Fulcrum’s 2019 Stock Incentive Plan (the “2019 Plan”) and 428,571 shares of Common Stock under Fulcrum’s 2019 Employee Stock Purchase Plan (the “ESPP” and together with the 2019 Plan, the “Plans”), in each case pursuant to the provisions for each plan that provide for annual automatic increases in the number of shares of Common Stock reserved for issuance under each plan. In each case, the additional shares are of the same class as other securities for which a registration statement relating to the Plans has previously been filed and is effective. Accordingly, this registration statement incorporates by reference the contents of the registration statements on Form S-8 (File No.  333-233452) filed on August 26, 2019, Form S-8 (File No. 333-236910) filed on March 5, 2020, Form S-8 (File No. 333-253862) filed on March 4, 2021, Form S-8 (File No. 333-262356) filed on January 27, 2022, Form S-8 (File No. 333-270385) filed on March 9, 2023, Form S-8 (File No. 333-277421) filed on February 27, 2024, and Form S-8 (File No. 333-285180) filed on February 25, 2025, pursuant to General Instruction E, except with respect to Item 8. Exhibits thereof.

Part II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 8. Exhibits.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Cambridge, Commonwealth of Massachusetts, on the 24th day of February, 2026.

POWER OF ATTORNEY

Each person whose signature appears below constitutes and appoints each of Alex C. Sapir and Alan Musso, acting alone or together with another attorney-in-fact, as his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for such person and in his or her name, place and stead, in any and all capacities, to sign any or all further amendments (including post-effective amendments) to this registration statement (and any additional registration statement related hereto permitted by Rule 462(b) promulgated under the Securities Act, (and all further amendments, including post-effective amendments, thereto)), and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.