WISeKey International Holding AG ("WISeKey") (Nasdaq: WKEY; SIX: WIHN), a global leader in cybersecurity, digital identity, and IoT solutions platform, and Columbus Acquisition Corp. ("Columbus") (NASDAQ:COLA), a Cayman Islands publicly traded special purpose acquisition company (SPAC), today announced that they have entered into a definitive Business Combination Agreement, dated as of November 9, 2025 (the "Business Combination Agreement"), for a business combination of Columbus and WISeKey's wholly owned subsidiary, WISeSat.Space Corp. ("WISeSat"), a British Virgin Islands holding company that wholly-owns WISeKey's operating subsidiary WISeSat.Space AG, resulting in a public company listed on the Nasdaq Stock Exchange to be named WISeSat.Space Holdings Corp. ("Pubco"). Upon closing, pursuant to the terms of the Business Combination Agreement, WISeKey will receive 25.0 million shares in Pubco at $10 per share and retain majority ownership. The transaction is currently expected to close in the first half of 2026.  

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