Columbus Acquisition issues USD 25,000 promissory note to WISeSat.Space for extension fee

• Columbus Acquisition Corp. issued an unsecured promissory note for USD 25,000 to WISeSat.Space on May 21, 2026, tied to a one-month extension of its business-combination deadline to June 22, 2026.
• The note is non-interest-bearing, with repayment due at the earliest of a business combination closing, termination of the WISeSat deal under specified terms, or the company’s winding up.
• WISeSat paid USD 25,000 of the USD 50,000 monthly extension fee deposited into the trust account, with the remaining USD 25,000 funded from working capital.
• WISeSat can convert amounts owed into private units at USD 10 per unit, or into post-closing shares at USD 5 per share if the WISeSat deal is terminated under a specified provision and the company completes a different transaction.

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