UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

~~SECURITIES~~Form ~~AND EXCHANGE COMMISSION~~8-K

~~Washington,~~Current ~~D.C. 20549~~Report

~~FORM~~Pursuant ~~8-K~~to Section 13 or 15(d) of the Securities Exchange Act of 1934

~~CURRENT~~March ~~REPORT~~17, 2026

~~Pursuant~~Date toof ~~Section~~Report 13(Date orof ~~15(d~~earliest event reported)

of the Securities Exchange Act of 1934

Date of Report (date of earliest event reported): March 16, 2026

Ribbon Acquisition Corp.

(Exact Name of Registrant as Specified in its Charter)

Cayman Islands	001-42474	N/A
Cayman Islands (exempted company)	001-42474	N/A
(State or other jurisdiction of incorporation)	(Commission File Number)	(~~IRS~~I.R.S. 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)
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s telephone number, including area code: +81 90-8508-3462

~~(Registrant’s telephone number, including area code)~~N/A

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~~☐ bySoliciting ~~check~~material ~~mark~~pursuant ~~whether~~to ~~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~~14a-212 ofunder the ~~Securities~~ Exchange Act ~~of 1934 (§240.12b-2 of this chapter).~~

~~Emerging~~☐ ~~growth~~Pre-commencement ~~company~~communications ☒pursuant to Rule 14d-2(b) under the Exchange Act

If☐ anPre-commencement ~~emerging~~communications ~~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~~Rule 1313e-4(ac) ofunder 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

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.

~~Ribbon~~On ~~Acquisition~~March ~~Corp.~~17, ~~(the “Company”)~~2026, ~~announced~~an ~~that~~aggregate ~~the Extraordinary General Meeting~~ of ~~Shareholders (the “Extraordinary General Meeting”)~~$125,000 was ~~originally~~deposited ~~adjourned~~into tothe ~~Monday,~~trust ~~March~~account ~~16,~~of ~~2026~~Ribbon atAcquisition ~~10:00 a~~Corp.m. ~~Eastern~~(the ~~Time,~~“Company”) ~~was~~for ~~adjourned~~the onbenefit ~~March~~of ~~16,~~its ~~2026~~public toshareholders ~~allow additional time for~~in ~~the~~connection ~~Company to solicit proxies~~ with ~~respect~~a topreviously ~~the~~approved ~~proposals~~monthly ~~set~~extension ~~forth~~of in the ~~notice~~period of the ~~Extraordinary~~Company ~~General~~has ~~Meeting~~to ~~and~~consummate ~~the~~its ~~accompanying proxy~~initial ~~statement~~business combination.

The ~~adjourned~~deposit ~~Extraordinary~~funded a one-month extension of the ~~General~~Company’s ~~Meeting~~deadline ~~will~~to beconsummate ~~held~~its oninitial ~~Monday~~business combination, ~~April~~in 13accordance with the Extension Amendment and Trust Amendment previously approved by the Company’s shareholders, ~~2026~~which atprovide ~~10:00~~for ~~a.m.~~monthly ~~Eastern~~extensions ~~Time~~upon the deposit of funds into the trust account.

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~~Item 9.01 Financial Statements and Exhibits.

~~Pursuant~~(d) ~~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.~~Exhibits

March 16, 2026

Exhibit No.		Description
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

~~Ribbon Acquisition Corp. By: /s/ Angshuman (Bubai) Ghosh Name: Angshuman (Bubai) Ghosh Title: Chief Executive Officer~~2

2SIGNATURES

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: March 27, 2026	Ribbon Acquisition Corp.

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

Filing Compare · Ribbon Acquisition Corp.