SEC Form S-8 filed by Leap Therapeutics Inc.

As filed with the Securities and Exchange Commission on March 26, 2025

Registration No. 333-               

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT

Under

The Securities Act of 1933

Leap Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

47 Thorndike Street

Suite B1-1

Cambridge, MA 02141

Telephone: (617) 714-0360

(Address of principal executive offices) (Zip Code)

Leap Therapeutics, Inc. 2016 Equity Incentive Plan

(Full title of the Plan)

Douglas E. Onsi

Chief Executive Officer and President

Leap Therapeutics, Inc.

47 Thorndike Street, Suite B1-1

Cambridge, MA 02141

(Name and address of agent for service)

(617) 714-0360

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

Copy to:

Julio E. Vega, Esq.

Morgan, Lewis & Bockius LLP

One Federal Street

Boston, MA 02110

(617) 951-8000

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. ¨

INCORPORATION OF DOCUMENTS BY REFERENCE

This Registration Statement on Form S-8, relating to the Leap Therapeutics, Inc. 2016 Equity Incentive Plan, is being filed for the purpose of registering additional securities of the same class as other securities for which a Registration Statement on Form S-8 has previously been filed and is effective. Pursuant to General Instruction E to Form S-8, except as otherwise set forth below, this Registration Statement incorporates by reference the contents of the following Registration Statements on Form S-8 previously filed by the Registrant with the Securities and Exchange Commission (the “Commission”):

Part II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

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 March 26, 2025.

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Christopher Mirabelli and Douglas Onsi, and each of them, as his true and lawful attorney-in-fact and agent with full power of substitution, for him in any and all capacities, to sign any and all amendments to this registration statement (including post-effective amendments), and to file the same, with all exhibits thereto and other documents in connection therewith, with the SEC, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully for all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, 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.