Columbus Acquisition Corp entered into a First Amendment to its Business Combination Agreement with WISeSat.Space Holdings Corp., extending the Outside Date for the proposed transaction to October 31, 2026. The company also executed a Subscription Agreement with SEALSQ Corp, an affiliate of target WISeKey International Holding Ltd., securing a $10 million PIPE investment. This capital raise involves issuing approximately 938,086 Pubco Ordinary Shares at the Redemption Price, subject to anti-dilution adjustments based on future share price performance. Columbus Acquisition Corp operates as a blank check company focused on effecting a merger with a private operating business.

Columbus Acquisition Corp deposited $50,000 into its trust account to extend the deadline for completing an initial business combination from July 22, 2026, to August 22, 2026. The fee was split equally between the Sponsor, Hercules Capital Management VII Corp, and the Target, WISeSat.Space Corp. To finance their respective $25,000 contributions, Columbus issued unsecured promissory notes to each party on July 30, 2026. These notes bear no interest and are convertible into private units at $10.00 per unit upon business combination consummation or repayable upon termination or winding up. This transaction relates to the proposed merger with WISeSat.Space Holdings Corp. Columbus Acquisition Corp operates as a blank check company focused on effecting a merger, capital stock exchange, asset acquisition, or similar business combination.

Columbus Acquisition Corp deposited $50,000 into its trust account to extend the deadline for completing an initial business combination from June 22, 2026, to July 22, 2026. The fee was split equally between the Sponsor, Hercules Capital Management VII Corp, and the Target, WISeSat.Space Corp. To finance their respective $25,000 contributions, the Company issued unsecured promissory notes to each party on July 29, 2026. These notes bear no interest and are convertible into private units at $10.00 per unit upon consummation of a business combination or repayable upon termination or winding up. The Target's note includes an alternative conversion option into post-combination shares at $5.00 per share if the Company terminates the agreement with WISeSat and merges with another entity. Columbus Acquisition Corp operates as a blank check company in the financial services industry, focused on identifying and merging with private entities.