WISeKey International Holding Ltd - American Depositary Shares (WKEY)

WISeKey Positions WISeID at the Center of Trusted AI, Digital Identity and Post-Quantum Security

Zug, Switzerland, August 6, 2026 – Ad-Hoc announcement pursuant to Art. 53 of the SIX Listing Rules – WISeKey International Holding Ltd (“WISeKey” or the “Company”) (SIX: WIHN; Nasdaq: WKEY) announced that it will hold an Extraordinary General Meeting of shareholders (the “EGM”) on September 9, 2026, at 3:00 p.m. Swiss time, at the offices of Homburger AG, Prime Tower, Hardstrasse 201, 8005 Zurich, Switzerland.

Zug, Switzerland, July 17, 2026 – Ad-Hoc announcement pursuant to Art. 53 of SIX Listing Rules – WISeKey International Holding Ltd (“WISeKey”) (SIX: WIHN; Nasdaq: WKEY) announced that WISeKey International Corp., a British Virgin Islands company and wholly owned subsidiary of WISeKey (“WISeKey BVI”), has publicly filed on July 16, 2026, a registration statement on Form F-4 with the U.S. Securities and Exchange Commission (the “SEC”) in connection with WISeKey’s proposed redomiciliation from Switzerland to the British Virgin Islands.

WISeKey Reports Unaudited Preliminary H1 2026 Key Metrics; Revenue Up 115%, FY 2026 Guidance Reaffirmed

WISeKey Shareholders Approved All Agenda Items of the 2026 Annual General Meeting

WISeKey International Holding Ltd Signs Merger Agreement to Redomicile to the British Virgin Islands

WISeKey International Holding Ltd. (“WISeKey”) (SIX: WIHN; Nasdaq: WKEY), a global leader in cybersecurity and trusted digital ecosystems, and its subsidiary SEALSQ Corp. (Nasdaq: LAES), a leading developer of semiconductors, PKI, and post-quantum technologies, today announced that their jointly established special purpose vehicle, Quantisimo Corp. (“Quantisimo”), has entered into a non-binding Letter of Intent (“LOI”) with GigCapital8 Corp. (Nasdaq: GIW) (“GigCapital8”), a publicly traded Private-to-Public Equity (PPE)™, also known as special purpose acquisition company (SPAC), to explore the establishment of a Nasdaq-listed strategic quantum technology platform.

FOR IMMEDIATE RELEASE

WISeKey’s WISeSat.Space Participates in FOSSA Systems Latest Financing Round, Reinforcing its European Secure Satellite Infrastructure Roadmap

WISeKey and Its Subsidiary WISeSat.Space Corp. Announce Filing of Registration Statement on Form F-4 with the U.S. Securities and Exchange Commission

WISeKey and Its Subsidiary WISeSat.Space Corp. Announce Filing of Registration Statement on Form F-4 with the U.S. Securities and Exchange Commission

WISeKey and SEALSQ Welcome White House Executive Order on Quantum Security, Highlighting the Critical Three-Year Window to Prepare Society for Q-Day

WISeKey’s WISe.ART Subsidiary Becomes the World’s First Hardware-Authenticated Art Platform as SEALSQ Subsidiary Secures European Patent for ‘Back-to-Physical’ NFT Technology

WISeKey’s SEALCOIN Platform Confirms Integration of QAIT Token Following Market Launch

Zug, Switzerland, May 29, 2026 – WISeKey International Holding Ltd. (“WISeKey” or the “Company”) (SIX: WIHN, NASDAQ: WKEY), a leading global cybersecurity and IoT company, announced today that the Board of Directors has submitted its proposals for shareholder approval at the 2026 Annual General Meeting of Shareholders (“AGM”).

WISeKey and SEALSQ Announce Roadmap and Launch of Official Website for WISeRobot.ch, Integrating Human-Centric AI With Post-Quantum Security in Robotics

WISeKey Expands the Global HUMAN-AI-T Into a Global Movement Following Davos 2026 Launch, Calling for Ethical and Human-Governed AI

WISeKey Issues CEO Letter to Shareholders

WISeKey Advances its WISeSat Space Subsidiary Position as “WISE Space Advanced Technologies” a European Quantum-Secure Space Technology Company

WISeKey Reports Audited Full Year 2025 Financial Results

SEALCOIN Advances Infrastructure for the Machine Economy, Leveraging Hedera Network and Post-Quantum Cryptography Expertise