WISeKey adds SealSQ as seller in WISeSat deal with Columbus Acquisition Corp

(AWP Alliance News) - WISeKey International Holding AG signed a seller joinder agreement dated Dec. 12, 2025 that adds SealSQ as a "Seller" to a business combination agreement involving WISeSat.Space, Columbus Acquisition, and WISeSat.Space Holdings. SealSQ agreed to sell and transfer 435 Company Ordinary Shares and 435 Company Class F Shares to WISeSat.Space Holdings as purchased shares under the agreement.

The joinder also requires SealSQ to execute ancillary transaction documents, including lock-up and registration rights agreements if it qualifies as a Pubco insider following the closing. The agreement bars SealSQ from making the seller distribution, reserving that right for the original signing seller.

https://www.sec.gov/Archives/edgar/data/1738699/0001213900-26-091235-in…

Disclaimer: This news brief was created using generative artificial intelligence. WISeKey International Holding AG 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, on August 18, 2026, and is solely responsible for the information contained therein.