WISeKey International Holding AG (WKEY) and Columbus Acquisition Corp. (COLA) signed a definitive business combination agreement dated November 9, 2025, to take WISeKey’s satellite subsidiary WISeSat.Space Corp. public through a SPAC merger.
Under the agreement, WISeKey will receive 25 million shares in the combined company at $10 per share, representing $250 million in equity value. The transaction is expected to close in the first half of 2026, subject to Columbus shareholder approval and other customary conditions.
WISeSat operates a constellation of satellites designed to provide secure IoT connectivity using post-quantum cryptographic technology. The company has launched 22 satellites with 14 currently operational and plans to deploy 100 satellites by 2030.
The merged entity will be named WISeSat.Space Holdings Corp. and trade on Nasdaq. Columbus shareholders who do not redeem their shares will receive one share of the new company for each Columbus share held.
WISeKey and SEALSQ Corp. (LAES), another WISeKey subsidiary, will provide at least $10 million in cash to WISeSat as part of the transaction. WISeKey may distribute up to 10% of its shares in the new company to its shareholders after closing.
WISeSat plans to launch its next satellite equipped with quantum-secure technology aboard a SpaceX Falcon 9 rocket from Vandenberg Space Force Base in November 2025. The satellite will test post-quantum communication protocols from space.
Maxim Group LLC serves as financial advisor to WISeKey, while EGS LLP provides legal counsel to WISeSat and Loeb & Loeb LLP advises Columbus.








