WISeSat.Space on Track to Deploy 100-Satellite Constellation by 2027 in Cooperation with WISekey and SEALSQ

WISeSat.Space on Track to Deploy 100-Satellite Constellation by 2027 in Cooperation with WISekey and SEALSQ

Pioneering One of the World’s Largest Low Earth Orbit Secure Satellite Infrastructures

Geneva, Switzerland – June 27, 2025- WISeKey International Holding Ltd (“WISeKey”) (SIX: WIHN, NASDAQ: WKEY), a leading global cybersecurity, blockchain, and IoT company, today announces that its subsidiary WISeSat.Space, is on target to deploy a 100-satellite constellation by 2027, establishing one of the largest secure low Earth orbit (LEO) infrastructures designed to deliver resilient, sovereign, and encrypted satellite connectivity globally.

Currently, over 25 WISeSat.Space constellation satellites can be tracked in real time at: .

This expanding constellation provides secure, cost-effective, and real-time IoT connectivity for critical applications across industries, including smart agriculture, energy, logistics, defense, and national security. The architecture is designed with post-quantum encryption and digital identity technologies, ensuring robust cybersecurity in orbit.

“The future of strategic autonomy starts in space,” said Carlos Moreira, Founder and CEO of WISeKey. “In today’s volatile geopolitical and technological climate, having a sovereign satellite infrastructure is no longer a luxury, it is a necessity. Our 100-satellite goal will make WISeSat.Space a global leader in space-based secure communications.”

A Strategic Asset for Digital Sovereignty

The WISeSat.Space initiative aligns with the growing global demand for sovereign space infrastructure as nations and corporations seek to reduce dependency on foreign technologies and protect sensitive data. The constellation provides an independent layer of digital trust to support secure communications, navigation, broadcasting, and data sovereignty.

A Modular and Scalable Model

WISeSat.Space satellites are deployed in collaboration with trusted launch partners and manufactured with a “Space-for-Good” philosophy, combining environmental awareness with advanced security protocols. The modular architecture enables rapid scalability to meet evolving global needs.

About WISeSat.Space

WISeSat.Space is a joint venture powered by WISeKey and SEALSQ, focused on deploying the world’s first truly secure IoT satellite constellation. Leveraging WISeKey’s trusted root of digital identity and SEALSQ’s post-quantum secure semiconductors, WISeSat.Space is paving the way for a trusted space-based ecosystem for governments, enterprises, and critical infrastructure providers.

About WISeKey

WISeKey International Holding Ltd (“WISeKey”, SIX: WIHN; Nasdaq: WKEY) is a global leader in cybersecurity, digital identity, and IoT solutions platform. It operates as a Swiss-based holding company through several operational subsidiaries, each dedicated to specific aspects of its technology portfolio. The subsidiaries include (i) SEALSQ Corp (Nasdaq: LAES), which focuses on semiconductors, PKI, and post-quantum technology products, (ii) WISeKey SA which specializes in RoT and PKI solutions for secure authentication and identification in IoT, Blockchain, and AI, (iii) WISeSat AG which focuses on space technology for secure satellite communication, specifically for IoT applications, (iv) WISe.ART Corp which focuses on trusted blockchain NFTs and operates the WISe.ART marketplace for secure NFT transactions, and (v) SEALCOIN AG which focuses on decentralized physical internet with DePIN technology and house the development of the SEALCOIN platform.



Each subsidiary contributes to WISeKey’s mission of securing the internet while focusing on their respective areas of research and expertise. Their technologies seamlessly integrate into the comprehensive WISeKey platform. WISeKey secures digital identity ecosystems for individuals and objects using Blockchain, AI, and IoT technologies. With over 1.6 billion microchips deployed across various IoT sectors, WISeKey plays a vital role in securing the Internet of Everything. The company’s semiconductors generate valuable Big Data that, when analyzed with AI, enable predictive equipment failure prevention. Trusted by the OISTE/WISeKey cryptographic Root of Trust, WISeKey provides secure authentication and identification for IoT, Blockchain, and AI applications. The WISeKey Root of Trust ensures the integrity of online transactions between objects and people. For more information on WISeKey’s strategic direction and its subsidiary companies, please visit

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.



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