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Form 8-K

sec.gov
COLAU The article is a Form 8-K filing for Columbus Acquisition Corp, detailing an extension of its business combination deadline. It mentions the company's units, ordinary shares, and rights, all traded on Nasdaq, but provides no specific performance or outlook information. COLAR The article is a Form 8-K filing for Columbus Acquisition Corp, detailing an extension of its business combination deadline. It mentions the company's units, ordinary shares, and rights, all traded on Nasdaq, but provides no specific performance or outlook information. COLA The article is a Form 8-K filing for Columbus Acquisition Corp, detailing an extension of its business combination deadline. It mentions the company's units, ordinary shares, and rights, all traded on Nasdaq, but provides no specific performance or outlook information.

8-K — Columbus Acquisition Corp/Cayman Islands

Accession: 0001213900-26-047502

Filed: 2026-04-24

Period: 2026-04-20

CIK: 0002028201

SIC: 6770 (BLANK CHECKS)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — ea0287546-8k425_columbus.htm (Primary)

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8-K — CURRENT REPORT

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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 20, 2026

COLUMBUS ACQUISITION CORP

(Exact name of registrant as specified in its charter)

Cayman Islands

001-42485

N/A

(State or other jurisdiction

(Commission File Number)

(IRS Employer

of incorporation)

Identification Number)

14 Prudential Tower

Singapore 049712

(Address of principal executive offices)

(+1) 949 899 1827

(Registrant’s telephone number, including

area code)

(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 (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))

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

Title of each class

Trading Symbol

Name of each exchange on which registered

Units, consisting of one ordinary share, $0.0001 par value, and one Right to acquire one-seventh of one ordinary share

COLAU

The Nasdaq Stock Market LLC

Ordinary shares, par value $0.0001 per share

COLA

The Nasdaq Stock Market LLC

Rights, each whole right to acquire one-seventh of one ordinary share

COLAR

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 (§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. ☐

Item 8.01. Other Events.

Pursuant to the amended and

restated memorandum and articles of association (the “Charter”) of Columbus Acquisition Corp, a Cayman Islands exempted

company (the “Company”), the Company had until April 22, 2026 to complete its initial business combination, however

the Company may extend the period of time to consummate a business combination up to January 22, 2027, each by a one-month extension,

subject to the deposit of $50,000 (the “Monthly Extension Fee”) into the trust account of the Company (the “Trust

Account”).

On or about April 20, 2026,

an aggregate of $50,000 of the Monthly Extension Fee was deposited into the Trust Account for the public shareholders, which enabled the

Company to extend the period of time it has to consummate its initial business combination by one month from April 22, 2026 to May 22,

2026. Among the Monthly Extension Fee, $25,000 was paid from the Company’s working capital, and the remaining $25,000 was paid by

WISeSat.Space Corp., a British Virgin Islands business company (the “Target”) pursuant to that certain business combination

agreement dated as of November 9, 2025 (as it may be amended, supplemented, or otherwise modified from time to time, the “Business

Combination Agreement”) by and among the Company, the Target and other parties thereto in connection with a proposed business

combination.

Item 9.01 Financial Statements and Exhibits.

Exhibit No.

Description of Exhibits

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

1

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.

Columbus Acquisition Corp

By:

/s/ Fen Zhang

Name:

Fen Zhang

Title:

Chief Executive Officer

Date: April 24, 2026

2

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Security Exchange Name

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Ordinary shares, par value $0.0001 per share

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