SEALCOIN Unveils Major Milestones: From Satellite-Powered IoT Transactions to Launch of Marketing Campaign Ahead of Token Sale

WISeKey's SEALCOIN subsidiary shows promising technology progress with satellite IoT transactions, but token sale remains speculative with uncertain commercial adoption.

SEALCOIN, a subsidiary of WISeKey (SIX: WIHN, NASDAQ: WKEY) focused on transactional Internet of Things (IoT) technology, has achieved significant milestones in its journey toward a summer 2025 token launch.

Announced today, these achievements include successful device-to-device transactions over satellite, an updated whitepaper with revised tokenomics for the upcoming TIOT token, and the official launch of the Minimum Viable Product (MVP) integrated with Hedera’s DLT infrastructure.

The company's latest announcements highlight its ongoing technical development and refinement of the SEALCOIN platform, which aims to empower autonomous, efficient, and secure transactions between connected devices.

"We are entering a critical phase in the buildup to the SEALCOIN token launch this summer," said Bertrand Wolff, CEO of SOFORT, a subsidiary of CC Bank, and board member of WISeKey. "With the MVP now live and our global marketing campaign commencing, we are excited to introduce the SEALCOIN platform to the world and begin realizing its potential to transform the digital economy."

Key announcements from SEALCOIN include:

• Global marketing campaign launched ahead of token sale

• New WhitePaper with updated tokenomics for the upcoming TIOT token

• MVP of the SEALCOIN platform officially launched

• Successful device-to-device transaction over satellite completed in April 2025

• SEARCOIN's technology integrates seamlessly with Hedera's DLT infrastructure

• Key use cases include energy trading, device-as-a-service, and smart logistics

As the company rapidly approaches its token launch, stay tuned for more updates from SEALCOIN in the coming months.

Join the SEALCOIN Community and follow our journey:

• Twitter/X: https://x.com/sealcoin_ai

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• LinkedIn: https://www.linkedin.com/company/sealcoin/

• Newsletter Signup: www.sealcoin.ai/pre-registration/

Now is the time to be part of a future where connected devices don’t just talk — they transact.

About SEALCOIN

SEALCOIN is a decentralized platform designed to enable transactional IoT at scale. By embedding secure payment and authentication capabilities directly into IoT devices, SEALCOIN makes device-to-device economies not just possible, but practical. More information available on www.sealcoin.ai

About WISeKey

WISeKey International Holding Ltd ("WISeKey", SIX: WIHN; Nasdaq: WKEY) is a leading cybersecurity, digital identity and IoT solutions and platform company. Operating as a Swiss-based holding company, WISeKey provides its technology solutions through several operational subsidiaries, each focusing on specific aspects of the company's overall technology portfolio. The subsidiaries include: (i) SEALSQ Corp (Nasdaq: LAES), which develops and sells semiconductor, 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, used to create a new generation of services for various applications, especially in the booming market of the Internet of Things (IoT); (iv) WISe.ART Corp which focuses on trusted blockchain NFTs and operates the WISe.ART marketplace for the creation and secure transaction of NFTs; 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 concentrating on their respective areas of research and expertise, and their technologies seamlessly integrate into the comprehensive WISeKey platform. WISeKey secures digital identity ecosystems for people and objects in the physical and cyber spheres using Blockchain, AI and IoT technologies. With more than 1.6 billion microchips deployed in various sectors of the IoT value chain, and semiconductor technology that is trusted by 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 or people.

For more information, visit: www.wisekey.com.

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.

Press and Investor Contacts:

Email: ir@wisekey.com

Website: www.wisekey.com

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