WISeKey’s WISeSat Schedules Launch of Its 21st LEO Satellite with SpaceX from California for March 2026

WISeSat Teams with SEALSQand SEALCOIN.AI for an Exceptional Opportunity to Accelerate Its Vision for theSpace Quantum Internet, Delivering Quantum-Secure, High-Speed, Low-LatencyBroadband Directly to Users via a Constellation of LEO Satellites

Geneva, Switzerland, February 11, 2026 –WISeKey International Holding Ltd (“WISeKey”) (SIX: WIHN, NASDAQ: WKEY), aleading global cybersecurity, blockchain, and IoT company, today announces thatits subsidiary WISeSat.Space Corp. (“WISeSat”) specialized in space-technologyand secure satellite communications for IoT applications is preparing for thelaunch of its 21^st LEO satellite. The launch is currently scheduledfor the end of March from California with SpaceX.

For this new launch, WISeSat is teaming with two other WISeKeysubsidiaries: SEALSQ Corp (Nasdaq: LAES),which focuses on semiconductors, PKI, and post-quantum technology products and, SEALCOIN.AI which focuses on decentralized physical internet with DePINtechnology and house the development of the SEALCOIN platform.

Together, all partiesaim to extendprevious Proofs of Concept by embedding WISeKey’s trusted Root of Trust, withSEALSQ’s Post-Quantum chip, and SEALCOIN wallet directly onboard the WISeSatplatform, thus accelerating their visionfor the space quantum internet, by delivering quantum-secure, high-speed, low-latencybroadband via a via constellation of LEO satellites. The satellites also integrate incrementalinnovations derived from SEALSQ’s quantum roadmap, leveraging advances from itspartner ecosystem and startup investment program to enhance security,performance, and operational efficiency.

This upcoming launch represents the first operational deploymentof a new generation of WISeSat satellites, which will progressively populateand modernize its constellation. With an average satellite lifespan ofapproximately five years, continuous renewal is essential to integrate newtechnologies, improve performance, and introduce advanced functionalities.

The anticipated WISeSat listing on NASDAQ via a business combination with ColumbusAcquisition Corp. (Nasdaq: COLA), a Cayman Islands–based public SPAC, willprovide access to capital markets which is expectedto significantly accelerate the deployment of the constellation, enablingglobal, device-to-device secure connectivity. This infrastructure will allowIoT devices equipped with WISeKey and SEALSQ microchips to securely transacttokens directly with Earth-based devices. Over time, quantum-enhanced capabilitieswill be gradually integrated into the satellite network.

WISeSat Satellite Deployment Strategy

As the satellite IoT communications division of WISeKey, WISeSatwas created to address the growing demand for secure, real-time connectivityacross critical sectors including logistics, agriculture, energy, andinfrastructure management. Traditional IoT networks face increasingvulnerabilities, and WISeSat mitigates these risks through a global,satellite-based architecture protected by post-quantum cryptography.

Building on the success of previous missions, WISeKey isplanning multiple WISeSat deployments throughout 2026, focused on expandingconstellation coverage, increasing bandwidth and redundancy, integratingAI-driven analytics for enhanced security monitoring and real-time dataprocessing, and developing hybrid terrestrial-satellite architectures.

As cyber and environmental challenges continue to evolve,initiatives such as the WISeSat IoT satellite constellation will play acritical role in shaping a more resilient, secure, and sustainable future. Withmultiple launches planned for 2026/27 WISeSat remains at the forefront ofsecuring the IoT ecosystem through space-based technology and advancing towarda quantum-secure digital world. As quantum computing accelerates and cyberthreats intensify, WISeSat reinforces WISeKey’s commitment to building a future-proofcybersecurity infrastructure capable of protecting critical digital ecosystems.

Carlos Moreira, Founder and CEO of WISeKey, commented, “This newlaunch and additional ones we are planning, represent a major step forward insecuring IoT communications for the future. By integrating SEALSQ’sPost-Quantum chips with WISeKey’s trusted Root of Trust, we are ensuring thatWISeSat remains a leader in satellite cybersecurity. Our goal is to deliver aquantum-resistant, globally connected IoT and D2D ecosystem capable ofaddressing tomorrow’s security challenges.”

Built on Hedera’s Decentralized Ledger Technology, SEALCOINtokens ensure secure, transparent, and tamper-proof transactions, laying thefoundation for a scalable Transactional IoT (t-IoT) infrastructure. Thisbreakthrough aims to redefine machine-to-machine (M2M) transactions acrosssectors such as smart cities, logistics, remote sensing, and space-enabledservices, opening new frontiers for secure, decentralized IoT applicationsbeyond Earth.

Stefan Deiss, Co-Founder & CEO of The Hashgraph Group,added, “We are excited about the further expansion of the WISeSatconstellation, delivering real-time and secure IoT connectivity acrossindustries worldwide. We remain strong proponents of advanced space-basedtechnology and enabling a quantum-secure, hyper-connected digital world,leveraging Hedera as the world’s leading quantum-secure distributed ledgertechnology. With the integration of SEALCOIN platform and QAIT as a digitalcurrency settlement layer, we are entering a new frontier of spaceinfrastructure rails that enable autonomous financial transactions betweenEarth and the wider galaxy.”

About The Hashgraph Association

The Hashgraph Association is at the forefront of the digitalenablement and empowerment of organisations through the broad adoption ofHedera-powered enterprise-grade solutions and decentralized applications, whichincludes supporting and funding of training, innovation, and venture buildingprograms globally. As a non-profit organization headquartered in Switzerland,The Hashgraph Association provides funding for innovation, research, anddevelopment that enables economic inclusion and a digital future for all, witha positive environmental, social, and governance (ESG) impact. For furtherinformation about The Hashgraph Association, visitwww.hashgraph-association.com

About WISeSat.Space

WISeSat.SpaceAG is pioneering a transformative approach to IoT connectivity and climatechange monitoring through its innovative satellite constellation. By providingcost-effective, secure, and global IoT connectivity, WISeSat is enabling a widerange of applications that support environmental monitoring, disastermanagement, and sustainable practices. The integration of satellite data withadvanced climate models holds great promise for enhancing our understanding ofclimate change and developing effective strategies to combat its impacts. Asthe world continues to grapple with the challenges of climate change,initiatives like WISeSat’s IoT satellite constellation are essential forcreating a more resilient and sustainable future.

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 companythrough several operational subsidiaries, each dedicated to specific aspects ofits technology portfolio. The subsidiaries include (i) SEALSQ Corp (Nasdaq:LAES), which focuses on semiconductors, PKI, and post-quantum technologyproducts, (ii) WISeKey SA which specializes in RoT and PKI solutions for secureauthentication and identification in IoT, Blockchain, and AI, (iii) WISeSat AGwhich focuses on space technology for secure satellite communication,specifically for IoT applications, (iv) WISe.ART Corp which focuses on trustedblockchain NFTs and operates the WISe.ART marketplace for secure NFTtransactions, and (v) SEALCOIN AG which focuses on decentralized physicalinternet with DePIN technology and house the development of the SEALCOINplatform.

Each subsidiary contributes to WISeKey’s missionof securing the internet while focusing on their respective areas of researchand expertise. Their technologies seamlessly integrate into the comprehensiveWISeKey platform. WISeKey secures digital identity ecosystems for individualsand objects using Blockchain, AI, and IoT technologies. With over 1.6 billionmicrochips deployed across various IoT sectors, WISeKey plays a vital role insecuring the Internet of Everything. The company’s semiconductors generatevaluable Big Data that, when analyzed with AI, enable predictive equipmentfailure 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 onlinetransactions between objects and people. For more information on WISeKey’sstrategic direction and its subsidiary companies, please visit www.wisekey.com.

Disclaimer
This communication expressly or implicitly contains certainforward-looking statements concerning WISeKey International Holding Ltd and itsbusiness. 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 InternationalHolding Ltd to be materially different from any future results, performance orachievements expressed or implied by such forward-looking statements. WISeKeyInternational Holding Ltd is providing this communication as of this date anddoes not undertake to update any forward-looking statements contained herein asa result of new information, future events or otherwise.

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

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