SCHEDULE 13G/A 0001140361-25-025600 0001279891 XXXXXXXX LIVE 1 Ordinary Shares, par value $0.0001 per share 11/10/2025 0002028201 Columbus Acquisition Corp/Cayman Islands G2295P107 14 Prudential Tower Singapore U0 049712 Rule 13d-1(b) WOLVERINE ASSET MANAGEMENT LLC IL 0 169777 0 169777 169777 N 2.13 IA Wolverine Trading Partners, Inc. IL 0 169777 0 169777 169777 N 2.13 CO HC Wolverine Holdings, L.P. IL 0 169777 0 169777 169777 N 2.13 HC Christopher L. Gust IL 0 169777 0 169777 169777 N 2.13 IN HC Robert R. Bellick IL 0 169777 0 169777 169777 N 2.13 IN HC Columbus Acquisition Corp/Cayman Islands 14 Prudential Tower, Singapore, Singapore, 049712 Wolverine Asset Management, LLC Wolverine Holdings, L.P. Wolverine Trading Partners, Inc. Christopher L. Gust Robert R. Bellick c/o Wolverine Asset Management, LLC 175 West Jackson Boulevard, Suite 340 Chicago, IL 60604 Wolverine Asset Management, LLC - Illinois Wolverine Holdings, L.P. - Illinois Wolverine Trading Partners, Inc. - Illinois Christopher L. Gust - U.S. Citizen Robert R. Bellick - U.S. Citizen N IA HC Wolverine Asset Management, LLC ("WAM") is an investment manager and has voting and dispositive power over 169,777 Ordinary Shares of the Issuer. The sole member and manager of WAM is Wolverine Holdings, L.P. ("Wolverine Holdings"). Robert R. Bellick and Christopher L. Gust may be deemed to control Wolverine Trading Partners, Inc. ("WTP"), the general partner of Wolverine Holdings. 2.13%. WAM may be deemed the beneficial owner of 2.13% of the Issuer's Ordinary Shares, and each of Wolverine Holdings, WTP, Mr. Bellick, and Mr. Gust may be deemed the beneficial owner of 2.13% of the Issuer's outstanding Ordinary Shares. Percentages were calculated by dividing the number of shares deemed beneficially owned by each reporting person by 7,944,290 (the number if Ordinary Shares outstanding as of November 6, 2025 according to the Issuer's September 30, 2025 Form 10-Q). 0 WAM has shared power to vote or direct the vote of 169,777 of the Issuer's Ordinary Shares, and each of Wolverine Holdings, WTP, Mr. Bellick, and Mr. Gust has shared power to vote or direct the vote of 169,777 of the Issuer's Ordinary Shares, in each case as set forth in Item 4(a) above. 0 WAM has shared power to dispose or direct the disposition of 169,777 Ordinary Shares of the Issuer's stock, and each of Wolverine Holdings, WTP, Mr. Bellick, and Mr. Gust has shared power to dispose or direct the disposition of 169,777 Ordinary Shares of the Issuer's stock, in each case as set forth in Item 4(a) above. N Y N Wolverine Flagship Fund Trading Limited is known to have the right to receive the receipt of dividends from, or the proceeds from the sale of, the Issuer's Ordinary Shares covered by this statement that may be deemed to be beneficially owned by WAM. Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. WOLVERINE ASSET MANAGEMENT LLC /s/ Kenneth L. Nadel 12/19/2025 Wolverine Trading Partners, Inc. /s/ Christopher L. Gust 12/19/2025 Wolverine Holdings, L.P. /s/ Christopher L. Gust 12/19/2025 Christopher L. Gust /s/ Christopher L. Gust 12/19/2025 Robert R. Bellick /s/ Robert R. Bellick 12/19/2025