WISeKey’s WISeID Positioned to Benefit from Accelerating Global Transition to Post-Quantum Digital Identity and Authentication Standards Geneva, Switzerland – June 26, 2026 – WISeKey International Holding Ltd (SIX: WIHN; NASDAQ: WKEY), a global leader in cybersecurity, digital identity and IoT, today announced that its subsidiary WISeID, a digital identity and cybersecurity platform it is positioned to benefit from the growing market opportunity created by emerging government initiatives aimed at accelerating the migration to post-quantum cryptography (PQC), including a recently reported draft U.S. Executive Order that would establish timelines for the adoption of quantum-resistant digital signatures and key establishment technologies. According to reports, the proposed U.S. policy framework would require federal agencies to transition key establishment mechanisms to post-quantum standards by 2030 and digital signatures by 2031. These measures reflect a broader global recognition that future quantum computers may eventually compromise many of today’s widely deployed public-key cryptographic systems, creating significant risks for digital identity, authentication, secure communications, and data protection. Digital signatures serve as the foundation of trust across the digital economy, enabling the authentication of users, devices, applications, and transactions. Key establishment technologies secure communications by allowing trusted parties to exchange cryptographic keys used to encrypt and decrypt sensitive information. Both technologies are essential components of modern cybersecurity architectures and are expected to undergo significant transformation as organizations prepare for the quantum era. “Governments and enterprises worldwide are are moving from planning to implementation on post-quantum security, creating a clear, time-bound upgrade cycle for digital identity and authentication,” said Carlos Moreira Founder and CEO of WISeKey. “WISeID is designed to address this transition by providing quantum-resilient identity, credential management and authentication capabilities that can be integrated into existing infrastructures. As regulatory timelines firm up and organizations begin executing their post-quantum roadmaps, we believe WISeID is well positioned to capture