WISeKey International Holding Ltd Announces Adjournment of 2025 Annual General Meeting

Zug, Switzerland, June 4, 2025 – Ad-Hoc announcement pursuant to Art. 53 of SIX Listing Rules – 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 decided, for logistical reasons, to ajourn the 2025 Annual General Meeting of Shareholders (“AGM“) from June 19, 2025, 2 p.m. Swiss time, to June 27, 2025, at 2:00 p.m. Swiss time.

The venue of the 2025 AGM will remain the offices of Homburger AG, Prime Tower, Hardstrasse 201, 8005 Zurich, Switzerland. Admittance to the 2025 AGM will start at 1:30 p.m. Swiss time.

Other than the date of the AGM, nothing will change. In particular, the items on the agenda of the AGM and the related proposals of the Board of Directors remain unchanged.

About WISeKey

WISeKey (NASDAQ: WKEY; SIX Swiss Exchange: WIHN) is a leading global cybersecurity company currently deploying large scale digital identity ecosystems for people and objects using Blockchain, AI and IoT respecting the Human as the Fulcrum of the Internet. WISeKey microprocessors secure the pervasive computing shaping today’s Internet of Everything. WISeKey IoT has an install base of over 1.5 billion microchips in virtually all IoT sectors (connected cars, smart cities, drones, agricultural sensors, anti-counterfeiting, smart lighting, servers, computers, mobile phones, crypto tokens etc.).  WISeKey is uniquely positioned to be at the edge of IoT as our semiconductors produce a huge amount of Big Data that, when analyzed with Artificial Intelligence (AI), can help industrial applications to predict the failure of their equipment before it happens.

Our technology is Trusted by the OISTE/WISeKey’s Swiss based cryptographic Root of Trust (“RoT”) provides secure authentication and identification, in both physical and virtual environments, for the Internet of Things, Blockchain and Artificial Intelligence. The WISeKey RoT serves as a common trust anchor to ensure the integrity of online transactions among objects and between objects and people. For more information, visit www.wisekey.com.

Press and investor contacts:

WISeKey International Holding Ltd 
Company Contact:  Carlos Moreira
Chairman & CEO
Tel: +41 22 594 3000
info@wisekey.com WISeKey Investor Relations (US) 
Contact:  Lena Cati
The Equity Group Inc.
Tel: +1 212 836-9611
lcati@equityny.com

Disclaimer:

This communication expressly or implicitly contains certain forward-looking statements concerning WISeKey International Holding Ltd and its business. Such statements involve certain known and unknown risks, uncertainties and other factors, which could cause the actual results, financial condition, performance or achievements of WISeKey International Holding Ltd to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. WISeKey International Holding Ltd is providing this communication as of this date and does not undertake to update any forward-looking statements contained herein as a result of new information, future events or otherwise.

This press release does not constitute an offer to sell, or a solicitation of an offer to buy, any securities, and it does not constitute an offering prospectus within the meaning of the Swiss Financial Services Act (“FinSA”), the FInSa's predecessor legislation or advertising within the meaning of the FinSA. Investors must rely on their own evaluation of WISeKey and its securities, including the merits and risks involved. Nothing contained herein is, or shall be relied on as, a promise or representation as to the future performance of WISeKey.