WISeKey is a Swiss cybersecurity holding company whose core business is designing and selling secure semiconductors through its partially spun-off subsidiary SEALSQ (Nasdaq: LAES). SEALSQ is a fabless chip designer — it designs silicon but outsources manufacturing — and sells secure microcontrollers that give connected devices a tamper-resistant cryptographic identity, enabling device authentication, encrypted communications, and anti-counterfeiting. The flagship legacy product line is the VaultIC family of secure elements, with over 1.6B units shipped cumulatively. SEALSQ's strategic growth product is the QS7001, a chip embedding NIST-standardized post-quantum cryptographic algorithms directly at the silicon level, commercially launched in Q4 2025. SEALSQ sells primarily to OEMs and electronics manufacturers, with key customers including Cisco, Thales, Siemens, Toshiba, and Landis & Gyr. Chip sales dominate revenue, with the August 2025 acquisition of IC'Alps adding ASIC custom chip design capabilities. Beyond chip sales, SEALSQ offers PKI and trust services — issuing and managing digital identities for connected devices on a per-certificate or subscription basis. WISeKey's other business units include WISeSat, an early-stage LEO nanosatellite venture targeting secure IoT connectivity; SEALCOIN, a pre-revenue platform for machine-to-machine blockchain transactions; and WISeID, a managed digital identity service. WISeKey's long-term strategy is to converge these units into an integrated ecosystem spanning hardware, satellite connectivity, transactions, and identity services.