As filed with the Securities and Exchange Commission on August 13, 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

BULLISH
(Exact name of registrant as specified in its charter)

Bullish 2025 Omnibus Incentive Plan
(Full title of the plans)

Bullish US LLC
Suite 302, 4001 Kennett Pike,
County of New Castle,
Wilmington, Delaware 19807
(Name and address of agent for service)

With a copy to:

Howard Kenny
Erin E. Martin
Morgan, Lewis & Bockius LLP
101 Park Avenue
New York, New York 10178
(212) 309-6000

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.¨

PART I

INFORMATION REQUIRED IN THE PROSPECTUS*

PART II

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE

The following documents filed by Bullish (“Registrant” or the “Company”) with the Securities and Exchange Commission (the “Commission”) are incorporated by reference into this Registration Statement:

All documents filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) on or after the date of this Registration Statement and prior to the filing of a post-effective amendment to this Registration Statement that indicates that all securities offered have been sold or that deregisters all securities then remaining unsold, including any Reports of Foreign Private Issuers on Form 6-K furnished by the Registrant to the Commission that indicate that they are incorporated herein by reference, shall be deemed to be incorporated by reference in this Registration Statement and to be part hereof from the date of filing of such documents; provided, however, that documents or information deemed to have been furnished and not filed in accordance with the rules of the Commission shall not be deemed incorporated by reference into this Registration Statement. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any subsequently filed document that also is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

ITEM 4. DESCRIPTION OF SECURITIES

Not applicable.

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL

Not applicable.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS

Cayman Islands law does not limit the extent to which a company’s articles of association may provide for indemnification of officers and directors, except to the extent any such provision may be held by the Cayman Islands courts to be contrary to public policy, such as to provide indemnification against civil fraud or the consequences of committing a crime. The Amended and Restated Memorandum and Articles of Association permit indemnification of officers and directors for any liability, action, proceeding, claim, demand, costs, damages or expenses, including legal expenses, incurred in their capacities as such unless such liability (if any) arises from actual fraud or willful default, as determined by a court of competent jurisdiction in a final non-appealable order. In addition, we enter into indemnification agreements with our directors, independent directors and executive officers that will provide such persons with additional indemnification beyond that provided in the Amended and Restated Memorandum and Articles of Association.

Pursuant to the indemnification agreements, the form of which is filed as Exhibit 10.4 to the Registrant’s registration statement on Form F-1, as amended (File No. 333-288780), we agree to indemnify our directors and officers against certain liabilities and expenses incurred by such persons in connection with claims made by reason of their being such a director or officer.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers or persons controlling us pursuant to the foregoing provisions, we have been informed that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED.

Not applicable.

ITEM 8. EXHIBITS

*            Filed herewith.

ITEM 9. UNDERTAKINGS

provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in this Registration Statement.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, 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 New York, State of New York on August 13, 2025.

POWER OF ATTORNEY

Each person whose signature appears below constitutes and appoints Thomas W. Farley and David W. Bonanno and each of them, individually, as attorneys-in-fact with full power of substitution, for him or her in any and all capacities, to do any and all acts and all things and to execute any and all instruments which said attorneys and agents may deem necessary or desirable to enable the registrant to comply with the Securities Act, and any rules, regulations and requirements of the Securities and Exchange Commission thereunder, including, without limitation, the power and authority to sign the name of each of the undersigned in the capacities indicated below to the Registration Statement on Form S-8, or the Registration Statement, to be filed with the Securities and Exchange Commission, to any and all amendments or supplements to such Registration Statement, whether such amendments or supplements are filed before or after the effective date of such Registration Statement, to any related Registration Statement filed pursuant to Rule 462 under the Securities Act, and to any and all instruments or documents filed as part of or in connection with such Registration Statement or any and all amendments thereto, whether such amendments are filed before or after the effective date of such Registration Statement; and each of the undersigned hereby ratifies and confirms all that such attorneys and agents shall 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.

SIGNATURE OF AUTHORIZED U.S. REPRESENTATIVE OF THE REGISTRANT

Pursuant to the requirements of the Securities Act, the undersigned certifies that it is the duly authorized United States representative of the registrant and has duly caused this registration statement to be signed by the undersigned, thereunto duly authorized, in the City of New York, State of New York, on August 13, 2025.