LAESV SEALSQ Corporation

SEALSQ Corp (NASDAQ: LAES) ("SEALSQ"), a company specializing in the development and sale of semiconductor Public Key Infrastructure (PKI), post-quantum technology, hardware, and software products, in collaboration with the OISTE Foundation and WISeKey, today announces that its fully integrated Root of Trust (RoT) provides one of the most complete security solutions on the market, a unique offering that covers both PKI and hardware. Using SEALSQ’s RoT solutions, businesses and organizations can trust their digital operations at every level, from cryptographic key management to device-level security. SEALSQ is one of the few players in the industry to provide such a holistic approach, integrating the entire security stack for a comprehensive solution.

The term RoT is often used in two contexts: PKI-based and hardware-based. SEALSQ recognizes that both interpretations are crucial for end-to-end security, and as such, is one of the only players in the market that delivers complete coverage for both.

In the PKI context, the RoT is built on SEALSQ’s trusted Certificate Authority (CA) and multiple accreditations, ensuring cryptographic trust across systems and devices. SEALSQ’s RoT is built on a foundation of multiple accreditations and industry certifications that establish it as a trusted authority in digital security. SEALSQ’s Managed PKI for IoT is WebTrust-certified, an essential accreditation that proves its commitment to maintaining the highest standards in digital certificate issuance and management. Furthermore, SEALSQ has achieved compliance with industry-leading standards, including Matter (Connectivity Standards Alliance) and GSMA, and has active collaborations with WISUN and other major consortiums, ensuring compatibility and trust across diverse ecosystems of connected devices. These certifications demonstrate SEALSQ’s leadership in PKI-based security offerings, providing a trusted platform for IoT devices, smart cities, automotive, and other industries that require secure, scalable authentication and encryption solutions.

In the hardware context, the RoT is established through SEALSQ’s secure elements and microcontrollers, which provide tamper-resistant environments for cryptographic operations at the device level, setting a new benchmark in device-level security. SEALSQ offers highly certified secure microcontrollers that are designed to provide cryptographic services and secure storage in a tamper-resistant environment. These secure elements are certified under Common Criteria EAL5+ for their Hardware and NIST FIPS140-3 for their firmware, ensuring robust protection against physical and cyber threats, making them ideal for IoT devices, industrial control systems, and other environments where security is paramount.

Furthermore, in response to the looming threat of quantum computing breaking traditional encryption algorithms, SEALSQ is actively developing a post-quantum RoT across both the PKI and hardware domains. SEALSQ’s post-Quantum secure chips, including the QVault TPM and QS7001 hardware platform, are designed to be resilient to attacks from quantum computers, ensuring long-term protection of critical data and communications. On the PKI side, SEALSQ is integrating post-quantum cryptographic algorithms into its RoT services, preparing businesses for the post-quantum era.

SEALSQ’s CEO, Carlos Moreira commented, “By offering a fully integrated security stack that encompasses both definitions of RoT, SEALSQ provides one of the most complete and future-proof solutions on the market, widely distributed across billions of devices today. This unique combination positions SEALSQ as a leader in both current digital security needs and in the future post-quantum landscape.”

Jean Pierre Enguent, CTO from SEALSQ added, “We are proud to bring our security services to the next level in 2025 by providing unprecedented level of protection that includes quantum resistant hardware chips and post quantum cryptographic RoT. This forward-looking approach ensures that SEALSQ’s customers remain protected even as quantum computers become a reality, which could potentially break widely-used encryption algorithms such as RSA and ECC.”

About SEALSQ:SEALSQ focuses on selling integrated solutions based on Semiconductors, PKI and Provisioning services, while developing Post-Quantum technology hardware and software products. Our solutions can be used in a variety of applications, from Multi-Factor Authentication tokens, Smart Energy, Smart Home Appliances, Medical and Healthcare and IT Network Infrastructure, to Automotive, Industrial Automation and Control Systems.

Post-Quantum Cryptography (PQC) refers to cryptographic methods that are secure against an attack by a quantum computer. As quantum computers become more powerful, they may be able to break many of the cryptographic methods that are currently used to protect sensitive information, such as RSA and Elliptic Curve Cryptography (ECC). PQC aims to develop new cryptographic methods that are secure against quantum attacks. For more information, please visit www.sealsq.com.

Contact Information:

SEALSQ CorpCarlos Moreira, Chairman & CEOTel: +41 22 594 3000info@sealsq.com

SEALSQ Investor Relations (US)The Equity Group Inc.Lena CatiTel: +1 212 836-9611 / lcati@equityny.comKatie MurphyTel: +1 212 836-9612 / kmurphy@equityny.com

Forward-Looking StatementsThis communication expressly or implicitly contains certain forward-looking statements concerning SEALSQ Corp and its businesses. Forward-looking statements include statements regarding our business strategy, financial performance, results of operations, market data, events or developments that we expect or anticipates will occur in the future, as well as any other statements which are not historical facts. Although we believe that the expectations reflected in such forward-looking statements are reasonable, no assurance can be given that such expectations will prove to have been correct. These statements involve known and unknown risks and are based upon a number of assumptions and estimates which are inherently subject to significant uncertainties and contingencies, many of which are beyond our control. Actual results may differ materially from those expressed or implied by such forward-looking statements. Important factors that, in our view, could cause actual results to differ materially from those discussed in the forward-looking statements include the expected success of our technology strategy and solutions for IoMT Security for Medical and Healthcare sectors, SEALSQ's ability to implement its growth strategies, SEALSQ's ability to continue beneficial transactions with material parties, including a limited number of significant customers; market demand and semiconductor industry conditions; and the risks discussed in SEALSQ's filings with the SEC. Risks and uncertainties are further described in reports filed by SEALSQ with the SEC.

SEALSQ Corp 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.