Columbus Acquisition Corp/Cayman Islands

Item 8.01. Other Events As previously disclosed on September 11, 2026, Columbus Acquisition Corp (the “Company”) convened its Extraordinary General Meeting of the Shareholders (the “Meeting”) on September 10, 2026, with a quorum present, for the purpose of approving the proposals set forth in the Company’s definitive proxy statement filed with the SEC on August 19, 2026 (the “Proxy Statement”), including the proposed business combination with WISeSat. Space Corp. The Chairman, exercising his authority as Chairman of the Meeting, adjourned the Meeting without submitting any proposals to a shareholder vote. On September 23, 2026, the Company announced that the reconvened Meeting will be held on September 28, 2026, and the new extended redemption deadline (the “Extended Redemption Deadline”) will be September 24, 2026. Public shareholders seeking to exercise their redemption rights must complete the procedures described in the Proxy Statement by the Extended Redemption Deadline. As of September 23, 2026, there was approximately $10.79 per share in trust. The record date for determining the Company shareholders entitled to receive notice of and to vote at the Meeting remains the close of business on August 17, 2026 (the “Record Date”). Shareholders as of the Record Date are eligible to vote, even if they have subsequently sold their shares. If you have already voted, you do not need to vote again unless you would like to change or revoke your prior vote on any proposal. If you have already submitted a proxy and do not wish to change your vote, you need not take any further action. If you have submitted a proxy and wish to change your vote, you may revoke your proxy at any time before it is exercised at the Meeting as provided in the Proxy Statement. Please note, however, that if your shares are held in street name by a broker or other nominee and you wish to revoke a proxy, you must contact the broker or nominee to revoke any prior voting instructions. The Company’s shareholders who have questions regarding the adjournment, or the Meeting, or would like to request documents may contact the Company’s proxy solicitor, Advantage Proxy, Inc., at: Advantage Proxy, Inc. P.O. Box 10904 Yakima, WA 98909 Individuals call toll-free 1-877-870-8565 Banks and brokers call 1-206-870-8565 Email: ksmith@advantageproxy.com In addition, shareholders who have already submitted a redemption request with respect to the shares held by them may withdraw such request by contacting our transfer agent. If you would like to change or revoke your prior vote on any proposal, or reverse a redemption request, please refer to the Proxy Statement for additional information on how to do so. On September 23, 2026, the Company issued a press release announcing the date of the reconvened Meeting. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated by reference. The information in Exhibit 99.1 is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing. Additional Information and Where to Find It On August 19, 2026, the Company filed a definitive proxy statement with the Securities and Exchange Commission (“SEC”) in connection with its solicitation of proxies for the Meeting. INVESTORS AND SECURITY HOLDERS OF THE COMPANY ARE URGED TO READ THE PROXY STATEMENT (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO) AND OTHER DOCUMENTS THE COMPANY FILES WITH THE SEC CAREFULLY IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE AS THEY WILL CONTAIN IMPORTANT INFORMATION. Investors and security holders will be able to obtain free copies of the definitive proxy statement (including any amendments or supplements thereto) and other documents filed with the SEC through the website maintained by the SEC at www.sec.gov or by contacting the Company’s proxy solicitor. Participants in the Solicitation The Company and its respective directors and officers may be deemed to be participants in the solicitation of proxies from shareholders in connection with the Meeting. Additional information regarding the identity of these potential participants and their direct or indirect interests, by security holdings or otherwise, is set forth in the definitive proxy statement. You may obtain free copies of these documents using the sources indicated above. Item 9.01. Financial Statements and Exhibits. Exhibit No. Description ───────────────────────────────────────────────────────────────────────── 99.1 Press Release dated September 23, 2026 104 Cover Page Interactive Data File (embedded within the Inline XBRL document)