SEALSQ Leads $10 Million PIPE Investment in WISeSat.Space

Insider Brief

• SEALSQ led a $10 million PIPE investment in WISeSat.Space that closed on October 1, 2026, alongside WISeSat.Space’s business combination.
• The investment provides WISeSat.Space with equity capital for planned satellite infrastructure expansion and integration of post-quantum security technologies across its space, ground and user segments.
• SEALSQ and WISeSat.Space plan to combine satellite capacity with secure semiconductor, cryptographic and trusted identity technologies to support post-quantum security services.

PRESS RELEASE — SEALSQ Corp (NASDAQ: LAES) (“SEALSQ” or “Company”), a company that focuses on developing and selling Semiconductors, PKI, and Post-Quantum technology hardware and software products, today announced that it led a $10 million private investment in public equity (PIPE) in WISeSat.Space Holdings Corp. (Nasdaq: SAIQ) (“WISeSat.Space”), a space technology company. The investment closed on October 1, 2026. WISeSat.Space and SEALSQ are subsidiaries of WISeQey Corp. (formerly known as WISeKey International Holding AG, “WISeQey”) (Nasdaq/SIX: WQEY), a global quantum cybersecurity and space IoT company.

The PIPE Investment closed on October 1, 2026, concurrently with the closing of the Business Combination.  The purchase price per share, equal to the redemption price, was $10.79 per share.  The Subscription Agreement includes a price-protection mechanism that may result in the issuance of additional WISeSat Ordinary Shares to SEALSQ under certain conditions if the volume-weighted average price of WISeSat Ordinary Shares for the 10 consecutive trading days ending on the 60th calendar day after Closing is below the purchase price, subject to a maximum issuance of an additional 1,073,216 shares. SEALSQ is also subject to customary lock-up restrictions under the Subscription Agreement.