Carlos Moreira Presented SEALSQ’s Sovereign Root-to-Quantum Platform at Tech&Fest

SEALSQ Corp (NASDAQ: LAES) ("SEALSQ" or "Company"), a company that focuses on developing and selling Semiconductors, PKI, and Post-Quantum technology ardware and software products, today announced that its CEO, Carlos Moreira, during his keynote at Tech&Fest (Progress Stage), presented the strategic vision and technical progress of a vertically integrated sovereign root-to-quantum security platform currently under development.

Addressing the accelerating risks posed by quantum computing to embedded and mission-critical systems, Mr. Moreira emphasized the urgency of preparing for Q-Day, the moment when quantum capabilities render today’s cryptography obsolete. He outlined Europe’s need to act decisively to secure its digital, industrial, defense, and space infrastructures through sovereign technologies.

The platform developed by SEALSQ is engineered as an end-to-end chain of trust, anchored in hardware and extending from secure semiconductor design to post-quantum cryptography, trusted provisioning, lifecycle governance, and quantum connectivity. At its foundation lies a hardware-embedded Root of Trust, integrated directly into secure microcontrollers, secure elements, and TPM-class devices. This silicon-level trust anchor ensures immutable identity, secure boot, protected key generation, and resistance to physical and logical attacks.

Building on this foundation, SEALSQ integrates post-quantum cryptographic mechanisms, including quantum-resistant key exchange, digital signatures, and hybrid cryptographic schemes, optimized for constrained embedded environments. The architecture enforces cryptographic agility, enabling secure transition as standards evolve and quantum threats mature.

A distinctive capability of the platform is its extension into sovereign quantum connectivity. SEALSQ’s platform connects quantum nodes along a proprietary quantum highway, enabling authenticated, hardware-anchored interaction between quantum systems and classical infrastructures. Each quantum node is cryptographically bound to a silicon Root of Trust, ensuring integrity, secure participation, and protection against rogue node insertion or supply-chain compromise.

The platform further secures the entire lifecycle of devices and systems, from manufacturing and personalization to deployment, operation, cryptographic updates, and decommissioning, ensuring long-term resilience and operational control over decades.

“This is not just a technology stack,” said Mr. Moreira. “It is a sovereign digital aircraft carrier, a defense-grade capability that allows Europe to project trust, secure its critical systems, and preserve strategic autonomy in the quantum era.”

By vertically integrating secure silicon, post-quantum cryptography, trusted manufacturing, and quantum-node connectivity, SEALSQ’s root-to-quantum platform positions Europe to protect defense, aerospace, space, energy, and industrial systems without reliance on non-sovereign technologies.

About SEALSQ:

SEALSQ is a leading innovator in Post-Quantum Technology hardware and software solutions. Our technology seamlessly integrates Semiconductors, PKI (Public Key Infrastructure), and Provisioning Services, with a strategic emphasis on developing state-of-the-art Quantum Resistant Cryptography and Semiconductors designed to address the urgent security challenges posed by quantum computing. As quantum computers advance, traditional cryptographic methods like RSA and Elliptic Curve Cryptography (ECC) are increasingly vulnerable.

SEALSQ is pioneering the development of Post-Quantum Semiconductors that provide robust, future-proof protection for sensitive data across a wide range of applications, including Multi-Factor Authentication tokens, Smart Energy, Medical and Healthcare Systems, Defense, IT Network Infrastructure, Automotive, and Industrial Automation and Control Systems. By embedding Post-Quantum Cryptography into our semiconductor solutions, SEALSQ ensures that organizations stay protected against quantum threats. Our products are engineered to safeguard critical systems, enhancing resilience and security across diverse industries.

For more information on our Post-Quantum Semiconductors and security solutions, please visit .

Forward-Looking Statements

This 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 anticipate 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 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.