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WISeKey International Holding AG (Nasdaq: WKEY) and Columbus Acquisition Corp. (Nasdaq: COLA) Announce Confidential Submission of Draft Registration Statement on Form F-4 in Connection with Proposed Business Combination

Canton of Zug, Switzerland and Singapore – December 29, 2025 - WISeKey International Holding AG (NASDAQ:WKEY) ("WISeKey") , a global leader in cybersecurity, digital identity, and IoT solutions platform, and Columbus