WISeKey International Holding AG (Nasdaq: WKEY; SIX: WIHN), a leading cybersecurity company, develops and provides integrated security solutions encompassing digital identity ecosystems, secure microprocessors, and Internet of Things (IoT) platforms across North America, Europe, the Middle East, Africa, and Asia Pacific; its core offerings include high-end Common Criteria EAL5+ and FIPS 140-3-certified secure microprocessors and semiconductors for IoT, automotive, and industrial applications; digital certificates, Public Key Infrastructure (PKI) services, and cloud-based certificate life-cycle management through the INeS platform; software-as-a-service solutions for signing, authentication, and post-quantum security; IoT security platforms integrating blockchain for data management in smart cities and healthcare; digital brand management and mobile security services; and managed cybersecurity including hosting, monitoring, and multi-element integration for governments and enterprises. Founded in 1999 and headquartered in Zug, Switzerland, the company operates through subsidiaries such as SEALSQ Corp for semiconductors and WISeSat.Space for satellite-based secure communications, focusing on quantum-resilient technologies amid growing demands for sovereign infrastructure. Recent developments include SEALSQ's completion of the IC'ALPS SAS acquisition in August 2025 for €12.5 million to bolster ASIC design capabilities, enhancing revenue from French semiconductor operations; execution of a definitive business combination agreement in November 2025 with Columbus Acquisition Corp to publicly list WISeSat.Space Holdings Corp on Nasdaq, with WISeKey receiving $250 million in equity and a planned satellite launch via SpaceX in December 2025; advancement of the Quantix Edge Security joint venture in Spain with SEALSQ, OdinS, and TProtege to establish a cybersecurity semiconductor center under Europe's PERTE Chip initiative; and deepened collaboration with the Swiss Armed Forces on quantum-secure satellite communications via WISeSat, WISeSat.Space, and SEALSQ technologies, alongside the HUMAN-AI-T initiative with the United Nations for AI governance.