Columbus Acquisition: Entry Into A Material Definitive Agreement, Amendments To Articles Of Incorporation Or Bylaws; Change In Fiscal Year, Submission Of Matters To A Vote Of Security Holders, Other Events, Financial Statements And Exhibits

Item 1.01. Entry into a Material Definitive Agreement. On January 16, 2026, Columbus Acquisition Corp, a Cayman Islands exempted company (the “Company”) held an extraordinary general meeting of shareholders (the “Extraordinary General Meeting”), where the shareholders of the Company approved, among the other things, to amend the Investment Management Trust Agreement dated January 22, 2025 (the “Trust Agreement”), by and between the Company and Continental Stock Transfer & Trust Company, a New York limited purpose trust company (the “Trustee”) to provide that the Trustee must commence liquidation of the Company’s trust account (the “Trust Account”) by the prescribed timeline as provided in the Company’s Amended Charter (as defined below). Upon the shareholders’ approval, on January 16, 2026, the Company and the Trustee entered into the amendment to the Trust Agreement. A copy of the amendment to the Trust Agreement (the “Trust Amendment”) is attached to this Current Report on Form 8-K as Exhibit 10.1 and is incorporated herein by reference. The foregoing description of the Trust Amendment does not purport to be complete and is subject to, and is qualified in its entirety by, the full text of the Trust Amendment. Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year. At the Extraordinary General Meeting, the shareholders of the Company approved the proposal (the “Charter Amendment Proposal”) that the Company’s Amended and Restated Memorandum and Articles of Association (the “Charter”), which provided that the Company has until January 22, 2026 to complete a business combination, be deleted in their entirety and the substitution in their place of the Second Amended and Restated Memorandum and Articles of Association (the “Amended Charter”) to provide that the Company has until January 22, 2026 to complete a business combination, and may elect to extend the period to consummate a business combination up to twelve times, each by an additional one-month extension (the “Monthly Extension”), for a total of up to twelve months to January 22, 2027. A copy of the Amended Charter is attached to this Current Report on Form 8-K as Exhibit 3.1 and is incorporated herein by reference. The disclosures set forth in this Item 5.03 are intended to be summaries only and are qualified in their entirety by reference to the Amended Charter. Item 5.07. Submission of Matters to a Vote of Security Holders. On December 22, 2025, the record date of the Shareholder Meeting, there were 7,944,290 ordinary shares, par value $0.0001 per share (the “Ordinary Shares”) issued and outstanding, approximately 79.97% of which were represented in person or by proxy at the Extraordinary General Meeting. The final results for the matter submitted to a vote of the Company’s shareholders at the Extraordinary General Meeting are as follows: 1 1. The Charter Amendment Proposal The shareholders approved that the Charter be deleted in their entirety and substituted in their place with the Amended Charter, which provides that the Company has until January 22, 2026 to complete a business combination, and may elect to extend the period to consummate a business combination up to twelve times, each by an additional Monthly Extension, for a total of up to twelve months to January 22, 2027, with immediate effect. The voting results were as follows: FOR AGAINT ABSTAIN 5,164,299 1,188,717 0 2. The Trust Amendment Proposal The shareholders approved the proposal to amend the Trust Agreement to provide that the Trustee must commence liquidation of the Trust Account by the prescribed time as provided in the Amended Charter. The voting results were as follows: FOR AGAINT ABSTAIN 5,164,299 1,188,717 0 Item 8.01. Other Events. In connection with the votes to approve the Charter Amendment Proposal, 3,449,851 Ordinary Shares of the Company were rendered for redemption. As a result, the Company has 4,494,439 Ordinary Shares issued and outstanding, including 2,550,149 shares held by public shareholders. Item 9.01 Financial Statements and Exhibits. Exhibit No. Description of Exhibits 3.1 Second Amended and Restated Memorandum and Articles of Associate, dated January 16, 2026. 10.1 Amendment to the Investment Management Trust Agreement dated January 16, 2026, between the Company and Continental Stock Transfer & Trust Company. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 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: January 20, 2026 3

Columbus Acquisition: Entry Into A Material Definitive Agreement, Amendments To Articles Of Incorporation Or Bylaws; Change In Fiscal Year, Submission Of Matters To A Vote Of Security Holders, Other Events, Financial Statements And Exhibits

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