UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

Current Report

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

May 1, 2026

Date of Report (Date of earliest event reported)

Pono Capital Four, Inc.

(Exact Name of Registrant as Specified in its Charter)

Cayman Islands 001-43191 N/A
(State or other jurisdiction
of incorporation)
(Commission File Number) (I.R.S. Employer
Identification No.)

Suite 210, 2nd Floor Windward III, Regatta Office Park, PO Box 500

Grand Cayman, Cayman Islands

(Address of Principal Executive Offices)

Registrant’s telephone number, including area code: (206) 923-9234

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act
☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act
☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act
☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered
Units, each consisting of one Class A ordinary share and one right to receive one-fifth of one Class A ordinary share PONOU The Nasdaq Stock Market LLC
Class A ordinary shares, par value $0.0001 per share PONO The Nasdaq Stock Market LLC
Share rights, to receive one-fifth of one Class A ordinary share PONOR The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☒

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 13(a) of the Exchange Act. ☐

Item 8.01. Other Events.

On May 1, 2026, Pono Capital Four, Inc. (the “Company”) announced that, on or about May 5, 2026, the holders of the Company’s units (the “Units”) may elect to separately trade the Class A ordinary shares and share rights included in the Units. Each Unit consists of one Class A ordinary share, $0.0001 par value (each, a “Share”) and one right to receive one-fifth of one Share (each, a “Share Right”) at the closing of the Company’s initial business combination. Any Units not separated will continue to trade on The Nasdaq Global Market (“Nasdaq”) under the symbol “PONOU.” Any underlying Shares and Share Rights that are separated will trade on Nasdaq under the symbols “PONO” and “PONOR,” respectively. Holders of Units will need to have their brokers contact Continental Stock Transfer & Trust Company, the Company’s transfer agent, in order to separate the holders’ Units into Shares and Share Rights.

A copy of the press release issued by the Company announcing the separate trading of the securities underlying the Units is attached hereto as Exhibit 99.1.

Item 9.01. Financial Statements and Exhibits.

Exhibit No. Description
99.1 Press Release dated May 1, 2026
104 The cover page from this Current Report on Form 8-K, formatted in Inline XBRL

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: May 1, 2026

PONO CAPITAL FOUR, INC.
By: /s/ Dustin Shindo
Name: Dustin Shindo
Title: Chief Executive Officer

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