WISeKey unit WISeSat confidentially submits amended SEC filing for Columbus Acquisition deal

• WISeSat submitted an amended draft Form F-4 to the SEC on May 29 for its planned combination with SPAC Columbus Acquisition.
• The deal would place WISeSat and Columbus under a new holding company, expected to trade on Nasdaq as WSAT.
• The transaction was agreed in a definitive business combination agreement dated Nov. 9, 2025, involving WISeSat, Columbus, Pubco, WISeKey.
• WISeSat develops secure satellite infrastructure for trusted communications, digital identity, secure data exchange.
• Closing remains subject to SEC review, Columbus shareholder vote, registration effectiveness, Nasdaq listing approval for Pubco shares.

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