WISeKey International Holding AG and Columbus Acquisition Corp. have taken a significant step forward in their previously announced combination with the confidential submission of a draft registration statement on Form F-4 to the U.S. Securities and Exchange Commission. The transaction, which also involves WISeSat.Space Holdings Corp. and WISeSat.Space Corp., will result in both WISeSat and Columbus becoming wholly owned subsidiaries of Pubco, a British Virgin Islands company. The boards of directors of all involved entities have unanimously approved the agreement, and any remaining cash in Columbus's trust account after redemptions will be contributed to Pubco in support of its operations and commercialization plans.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Columbus Acquisition Corp. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001213900-25-126033), on December 29, 2025, and is solely responsible for the information contained therein.