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

Date of Report (date of earliest event reported): April 13, 2026

Ribbon Acquisition Corp.

(Exact Name of Registrant as Specified in its Charter)

Cayman Islands

001-42474

N/A

(State or other jurisdiction

of incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

Central Park Tower LaTour Shinjuku, Room 3001,

6-15-1 Nishi Shinjuku, Shinjuku-ku, Tokyo 160-0023,

Japan

160-0023

(Address of principal executive offices)

(Zip Code)

+81 90-8508-3462

(Registrant’s telephone number, including area code)

Not Applicable

(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 (see General Instruction A.2. below):

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

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. ☐

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Class A Ordinary Shares	RIBB	The Nasdaq Stock Market LLC
Units	RIBBU	The Nasdaq Stock Market LLC
Rights	RIBBR	The Nasdaq Stock Market LLC

ITEM 8.01. Other Events.

Ribbon Acquisition Corp. (the “Company”) announced that the Extraordinary General Meeting of Shareholders (the “Extraordinary General Meeting”), previously scheduled to be held on April 13, 2026 at 10:00 a.m. Eastern Time, was adjourned on April 13, 2026 to allow additional time for the Company to solicit proxies with respect to the proposals set forth in the notice of the Extraordinary General Meeting and the accompanying proxy statement.

The adjourned Extraordinary General Meeting will be held on Monday, September 14, 2026 at 10:00 a.m. Eastern Time.

Only shareholders of record as of the close of business on February 18, 2026 (the “Record Date”) are entitled to vote at the Extraordinary General Meeting. Proxies previously submitted in respect of the Extraordinary General Meeting will be voted at the adjourned meeting unless properly revoked, and shareholders who have previously submitted a proxy or otherwise voted need not take any further action.

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.

April 13, 2026

Ribbon Acquisition Corp.

By:	/s/ Angshuman (Bubai) Ghosh
Name:	Angshuman (Bubai) Ghosh
Title:	Chief Executive Officer