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SEALSQ (NASDAQ: LAES), part of WISeKey (WKEY), boosts quantum stack with Wecan and Miraex deals

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
6-K

Rhea-AI Filing Summary

WISeKey International Holding’s Form 6-K highlights two SEALSQ Corp transactions that expand its post-quantum and financial-compliance capabilities. SEALSQ has acquired a majority stake in Swiss fintech Wecan Group and agreed to invest CHF 5 million to speed development of an AI-powered, post-quantum compliance “copilot” for global financial institutions.

SEALSQ also acquired 100% of Miraex SA, a Swiss photonics company whose Thin Film Lithium Tantalate photonic integrated circuits form a quantum interconnect layer between processors and communication networks. Both deals are funded through SEALSQ’s internal Quantum Fund, which has $200 million of approved capital and has deployed over $65 million to build a vertically integrated “Quantum Sovereign Stack.”

Positive

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Negative

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Insights

SEALSQ deepens its quantum stack with targeted M&A but financial impact is not quantified.

SEALSQ is using its dedicated $200 million Quantum Fund to buy key building blocks for a vertically integrated quantum and post-quantum platform. The majority stake in Wecan Group adds regulated financial-compliance customers, while the full Miraex acquisition completes a proprietary quantum interconnect layer.

From a business perspective, these moves concentrate capital in high‑tech, long‑cycle projects. The filing notes over $65 million already deployed and a joint venture targeting €25M revenue, but provides no group‑level revenue or earnings context. Execution will depend on converting this technology stack into paying deployments with financial institutions, governments, and industrial customers.

Wecan Group strategic investment CHF 5 million Commitment by SEALSQ to accelerate Wecan Group’s AI compliance copilot and post-quantum solutions
Initial Wecan Group stake 28% equity Initial ownership acquired by SEALSQ one year before taking a majority position
Miraex ownership 100% of share capital SEALSQ acquires entire issued share capital of Miraex SA
Quantum Fund approved capital $200 million Total approved capital resources for SEALSQ’s internal Quantum Fund
Quantum Fund deployed capital over $65 million Amount already invested in several projects, including Miraex
Quantix Edge Security budget €40M Budget for Spanish post-quantum semiconductor center, including government support
Spanish government contribution €19M Funding from Spanish Government (SETT) to Quantix Edge Security project
Quantix Edge revenue target €25M Revenue target mentioned for Quantix Edge Security joint venture
Post-Quantum Cryptography (PQC) financial
"The platform will integrate advanced Post-Quantum Cryptography (PQC) technologies, quantum-resistant Hardware Security Modules (HSMs)..."
Post-quantum cryptography (PQC) involves developing new security methods designed to protect digital information against the future threat of powerful quantum computers. These advanced computers could potentially break current encryption techniques, making data vulnerable. For investors, PQC is important because it aims to safeguard sensitive financial and personal information in a world where quantum technology might eventually become a reality.
Hardware Security Modules (HSMs) technical
"The platform will integrate advanced Post-Quantum Cryptography (PQC) technologies, quantum-resistant Hardware Security Modules (HSMs)..."
Hardware security modules (HSMs) are dedicated physical devices that securely generate, store and use cryptographic keys, keeping those keys isolated from general-purpose servers and software to prevent theft or tampering. For investors, HSMs matter because they lower the risk of costly data breaches, regulatory penalties and transaction fraud—think of them as a high-security vault for a company's digital keys that helps protect revenue, reputation and valuation.
Quantum Sovereign Vertical Stack technical
"This milestone marks a defining step in the evolution of SEALSQ’s Quantum Sovereign Vertical Stack..."
Quantum Orbital Space Cloud (QOSC) technical
"It also represents a pivotal acceleration of the Quantum Orbital Space Cloud (QOSC) program..."
Anti-money laundering (AML) financial
"...from onboarding to periodic reviews, transaction monitoring, anti-money laundering (AML) and know-your-customer (KYC) compliance."
Anti-money laundering (AML) is the set of laws, checks and internal controls that financial firms and other regulated businesses use to detect and stop criminals from disguising illegal money as legitimate. Like locks and ID checks at an airport, AML systems track where money comes from and who is using it to reduce fraud, corruption and financing of crime. For investors, strong AML compliance lowers the risk of heavy fines, operational disruption and reputational damage that can hurt a company’s value.
Know-your-customer (KYC) financial
"...from onboarding to periodic reviews, transaction monitoring, anti-money laundering (AML) and know-your-customer (KYC) compliance."
A know-your-customer (KYC) process is a routine identity and background check financial firms use to verify who a client is and assess risks like fraud or money laundering. For investors it matters because KYC helps protect assets and market integrity, determines whether you can use a service or trade certain products, and can affect how quickly accounts are opened or transactions settle—think of it as a required ID check before accessing financial services.
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

 

 

 

FORM 6-K

 

 

 

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 under the

Securities Exchange Act of 1934

 

For the month of June 2026

 

Commission File Number: 001-39115

 

 

 

WISEKEY INTERNATIONAL HOLDING AG

(Exact Name of Registrant as Specified in Charter)

 

 

 

WISEKEY INTERNATIONAL HOLDING LTD

(Translation of Registrant’s name into English)

 

 

 

Canton of Zug, Switzerland   General-Guisan-Strasse 6
CH-6300 Zug, Switzerland
  Not Applicable
(State or other jurisdiction of
incorporation or organization)
  (Address of principal executive office)   (I.R.S. Employer
Identification No.)

 

 

 

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

 

☒ Form 20-F         ☐ Form 40-F

 

 

 

 

 

 

Exhibit No.   Description
99.1   Press Release of SEALSQ Corp issued on June 2, 2026
99.2   Press Release of SEALSQ Corp issued on June 2, 2026

 

1

 

 

SIGNATURES

 

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

Date: June 4, 2026 wisekey international holding ag
     
  By: /s/ Carlos Moreira
  Name: Carlos Moreira
  Title: Chief Executive Officer
     
  By: /s/ John O’Hara
  Name: John O’Hara
  Title: Chief Financial Officer

 

2

 

Exhibit 99.1

 

 

SEALSQ Announces Majority Investment in Wecan Group and CHF 5 Million Strategic Commitment to Accelerate Post-Quantum AI Compliance Co-Pilot for Global Financial Institutions

 

Following an initial 28% equity stake acquired one year ago, SEALSQ increases its ownership in Wecan Group to a majority position, strengthening its ability to deliver secure, AI-powered compliance solutions and post-quantum financial infrastructure for the global financial industry

 

Geneva, Switzerland, June 2, 2026 -- SEALSQ Corp (NASDAQ: LAES) (“SEALSQ” or “Company”), a company that focuses on developing and selling Semiconductors, PKI, and Post-Quantum technology hardware and software products, today announced that it has acquired a majority equity stake in Wecan Group, following an initial 28% investment made one year ago.

 

As part of this strategic transaction, SEALSQ will invest CHF 5 million to accelerate Wecan Group’s development and support the deployment of next-generation compliance Co-Pilote and post-quantum financial security solutions for the global financial industry. The investment has been made using the Company’s Quantum Fund, SEALQUANTUM.com, an internal strategic investment initiative of SEALSQ using a dedicated allocation of our cash with the goal of accelerating the development of a fully integrated Quantum Vertical Sovereign Stack through investments in carefully selected quantum computing startups in the United States and Europe.

 

Wecan Group has established itself as a trusted technology provider for leading private banks and financial institutions, with clients including Pictet, Lombard Odier, Edmond de Rothschild, Syz and Barclays, among others. Wecan Group’s solutions are designed to help financial institutions streamline client data management, compliance workflows and lifecycle processes in a secure and collaborative environment.

 

Through this majority participation, SEALSQ and Wecan Group intend to accelerate the implementation of an AI-powered Compliance Copilot, built on a secure post-quantum infrastructure. The platform will integrate advanced Post-Quantum Cryptography (PQC) technologies, quantum-resistant Hardware Security Modules (HSMs), secure digital identity frameworks and blockchain-based trust mechanisms designed to protect sensitive financial and digital asset ecosystems against future quantum computing threats.

 

The objective is to provide financial institutions, wealth managers and fintech with a trusted platform capable of optimizing the processing of sensitive client information across the entire client lifecycle, from onboarding to periodic reviews, transaction monitoring, anti-money laundering (AML) and know-your-customer (KYC) compliance.

 

 

 

 

The initiative aims to further support the development of:

 

Quantum-resistant authentication and transaction signing for digital banking

 

Trusted AI governance and explainable compliance algorithms for regulated financial institutions

 

Hardware Root of Trust and secure element technologies for financial applications

 

Confidential AI and encrypted data processing leveraging homomorphic encryption and secure semiconductors

 

Quantum-resilient digital identity systems for institutional and retail financial ecosystems

 

In addition, Wecan Group and SEALSQ plan to cooperate closely with SEALSQ’s parent company, WISeKey International Holding Ltd (SIX: WIHN; NASDAQ: WKEY), a global leader in cybersecurity, digital identity and IoT, to integrate the WISeID digital identity ecosystem into financial services and digital asset platforms. This collaboration aims to provide financial institutions and cryptocurrency ecosystems with trusted, sovereign and post-quantum secure digital identity solutions enabling secure customer authentication, compliant onboarding, digital signatures, identity verification and trusted access management across banking, wealth management and blockchain applications.

 

The integration of WISeID technologies is intended to strengthen compliance and security capabilities by enabling:

 

Post-quantum secure digital identity verification for financial clients

 

Trusted electronic signatures and transaction authentication

 

Secure identity wallets for banking and digital assets

 

Sovereign identity frameworks aligned with global financial regulations

 

Secure onboarding and KYC/AML identity validation

 

Cross-border trusted digital identity interoperability for financial institutions and blockchain ecosystems

 

Hardware-backed authentication leveraging SEALSQ secure semiconductors and WISeKey Root of Trust infrastructure

 

By combining Wecan Group’s compliance expertise, SEALSQ’s post-quantum semiconductor and cryptographic technologies, and WISeKey’s trusted digital identity infrastructure, the partnership aims to create one of the first integrated quantum-resilient trust platforms for the global financial and digital asset industries.

 

In private banking and financial services, client and transaction data represent some of the most sensitive and strategically important information managed by institutions. Combining post-quantum security with AI-driven optimization of compliance is increasingly becoming a critical requirement in light of rising cybersecurity threats, the emergence of quantum computing risks, evolving regulatory expectations around algorithms and data governance, and the accelerated institutional adoption of tokenized finance.

 

Carlos Moreira, CEO of SEALSQ commented: “Our majority investment in Wecan Group represents a significant step in SEALSQ’s strategy to bring post-quantum security to the most sensitive sectors of the global economy. Financial institutions and digital asset platforms are entering a new era in which cybersecurity, compliance automation, digital identity and trusted AI must converge. At the same time, cryptocurrencies and blockchain infrastructures must evolve toward quantum resilience to preserve long-term trust and security. By combining SEALSQ’s post-quantum technologies, Wecan Group’s expertise in private banking compliance infrastructure and WISeKey’s trusted digital identity ecosystem, we aim to deliver a secure and scalable trust platform for the financial industry and the digital asset economy worldwide.”

 

2

 

 

Vincent Pignon, Founder and CEO of Wecan Group added: “Wecan Group was created to help financial institutions manage trust, compliance and sensitive client information more efficiently. With SEALSQ as a majority shareholder and strategic technology partner, we are entering a new phase of growth. This investment will allow us to accelerate the deployment of our Compliance Management Copilot and strengthen our infrastructure with post-quantum security capabilities, providing banks and financial institutions with future-ready solutions for client lifecycle.”

 

The transaction reinforces SEALSQ’s positioning at the intersection of post-quantum cybersecurity, digital identity, trusted AI, blockchain security and regulated financial infrastructure, and supports its ambition to address the most demanding security, compliance and digital asset protection needs of global financial institutions and the emerging tokenized economy.

 

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 houses 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. 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 www.wisekey.com.

 

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 www.sealsq.com.

 

3

 

 

About Wecan Group

 

Wecan Group is a Swiss technology company founded in 2015 by Dr. Vincent Pignon, with a mission to help financial institutions securely optimize the management of their compliance processes. Its platform is a solution for orchestrating onboarding, change-of-circumstance and periodic-review processes for the end clients of regulated institutions—whether individuals, companies, trusts or others. Through a secure and standardized data-exchange protocol, Wecan Group has supported more than 100 financial institutions across over five countries, including some of the world’s most prestigious private banks such as Pictet, Lombard Odier, Edmond de Rothschild, Syz and Barclays, as well as financial intermediaries and fintech. The company offers products designed to onboard clients digitally, manage KYC and AML analysis, account openings, contract generation and periodic reviews, all while ensuring regulatory compliance with full auditability.

 

For more information, please visit www.wecangroup.ch.

 

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.

 

SEALSQ Corp   SEALSQ Investor Relations (US)
Carlos Moreira   The Equity Group Inc.
Chairman & CEO   Lena Cati
Tel: +41 22 594 3000   Tel: +1 212 836-9611
info@sealsq.com   Lena.cati@theequitygroup.com

 

4

 

Exhibit 99.2

 

 

SEALSQ Acquires Miraex SA, Cementing Its Quantum Sovereign Vertical Stack and Quantum Orbital Space Cloud (QOSC)

 

Strategic acquisition of Swiss photonics pioneer closes the quantum interconnect layer, uniting post-quantum silicon, orbital infrastructure, and distributed quantum sensing under one fully sovereign, end-to-end quantum architecture.

 

GENEVA, SWITZERLAND — June 2, 2026 — SEALSQ Corp (NASDAQ: LAES) (“SEALSQ” or the “Company”), a subsidiary of WISeKey International Holding Ltd (NASDAQ: WKEY; SIX: WIHN) and a global leader in post-quantum semiconductor and cybersecurity solutions, today announced the acquisition of 100% of Miraex SA (“Miraex”), a developer of photonics-based quantum interconnect solutions headquartered at the EPFL Innovation Park in Ecublens, Switzerland.

 

As part of this strategic transaction, SEALSQ has acquired entire issued share capital of Miraex SA. The investment has been made using the Company’s Quantum Fund, SEALQUANTUM.com, an internal strategic investment initiative of SEALSQ using a dedicated allocation of our cash with the goal of accelerating the development of a fully integrated Quantum Vertical Sovereign Stack. The Quantum Fund has total approved capital resources of $200 million, of which over $65 million has already been deployed in several projects (including Miraex).

 

 

This milestone marks a defining step in the evolution of SEALSQ’s Quantum Sovereign Vertical Stack, the Company’s Root-to-Qubit architecture encompassing the full spectrum of quantum technology from quantum-resistant semiconductors to orbital space infrastructure. It also represents a pivotal acceleration of the Quantum Orbital Space Cloud (QOSC) program, SEALSQ’s flagship initiative to deploy quantum-secure infrastructure across Low Earth Orbit (LEO) and beyond.

 

 

 

THE MISSING LINK: COMPLETING THE QUANTUM SOVEREIGN VERTICAL STACK

 

Miraex’s acquisition closes the quantum interconnect layer of SEALSQ’s Quantum Sovereign Vertical Stack, the critical bridge between quantum computing hardware and quantum communication networks. Built around a proprietary Thin Film Lithium Tantalate (TFLT) Photonic Integrated Circuit (PIC) platform, Miraex’s technology enables the conversion of quantum information between microwave frequencies (the operating domain of superconducting and semiconductor spin based quantum processors) and optical frequencies (the medium of choice for quantum communication), a foundational capability without which distributed quantum architectures cannot function at scale.

 

Miraex’s capabilities are organized across three quantum verticals that are expected to seamlessly extend SEALSQ’s existing platform:

 

Distributed Quantum Computing (DQC) — aimed at enabling interconnection of distributed quantum processors to achieve scalable, collective quantum computational power beyond the limits of any single device.

 

Quantum Sensing — designed to deliver photonic entanglement-based distributed sensing for precision navigation, geophysics, defense, and critical infrastructure monitoring.

 

Quantum Networking — building globally entangled quantum networks as the backbone of the future quantum internet, enabling end-to-end Quantum Key Distribution (QKD) at planetary scale.

 

REINFORCING THE QUANTUM ORBITAL SPACE CLOUD (QOSC)

 

Miraex’s photonic technology is uniquely aligned with the demands of space-based quantum infrastructure. TFLT PICs are compact, power-efficient, and radiation-tolerant by design — attributes critical for deployment on nanosatellites, CubeSats, and the broader QOSC constellation. With this acquisition finalized, SEALSQ now commands every layer of the quantum stack required to deliver secure, space-grade quantum connectivity:

 

Space-Grade Photonic Integration: Miraex’s TFLT PICs meet the size, weight, power, and radiation-tolerance requirements for orbital deployment, enabling quantum-secure links between QOSC satellites and terrestrial endpoints.

 

Quantum Key Distribution (QKD) at Scale: Miraex’s transduction and entanglement generation capabilities provide the physical-layer substrate for satellite-based QKD, delivering information-theoretically secure communications immune to quantum adversaries.

 

Distributed Orbital Sensing: Quantum sensing payloads enabled by Miraex’s platform will extend QOSC’s utility to precision Earth observation, sovereign navigation, and early-warning infrastructure.

 

2

 

 

THE SEALQuantum.com INNOVATION LAB AND QUANTUM FUND PORTFOLIO

 

The Miraex acquisition is the latest transaction in a series of strategic investments and acquisitions executed through the SEALSQ Quantum Fund and the SEALQuantum.com Innovation Lab, an internal strategic investment initiative of SEALSQ using a dedicated allocation of our cash. Together, these assets form a uniquely cohesive and vertically integrated Quantum Sovereign Stack spanning semiconductors, quantum hardware, orbital infrastructure, and regulatory technology:

 

Entity   Type   Strategic Role in Quantum Sovereign Vertical Stack
         
Miraex SA   Full Acquisition   Photonics-based quantum interconnects (TFLT PIC platform); microwave-to-optical transduction; QKD substrate; quantum sensing. Closes the quantum interconnect layer of the Sovereign Stack and anchors the QOSC.
         
IC’ALPS   Full Acquisition   France’s leading ASIC design and supply-chain specialist; 100+ engineers; custom semiconductors for medtech, automotive, space, and defense — now embedding SEALSQ’s post-quantum cryptography into high-reliability silicon.
         
EeroQ   Strategic Investment   U.S. quantum computing pioneer using single electrons on superfluid helium; CMOS-compatible qubits aligned with SEALSQ’s semiconductor personalization processes. Anchors the ‘Quantum Made in USA’ strategy.
         
ColibriTD   Strategic Investment   Quantum computing solver platform connecting to EeroQ hardware; co-developing quantum optimization to raise sub-7nm wafer yields from ~50% to ~80%, targeting $30M in semiconductor manufacturing savings.
         
WISeSat.Space   Strategic Investment   LEO satellite constellation for global IoT connectivity; embedding SEALSQ post-quantum secure elements for space-hardened QKD and quantum-resilient satellite communications. SpaceX-launched satellites operational.
         
Quantix Edge Security   Joint Venture   Spain’s first post-quantum semiconductor design, personalization, and test center (Murcia); €40M budget including €19.6M from the Spanish Government (SETT). Targets €25M revenue; bolsters EU semiconductor sovereignty.
         
WeCan Group SA   Majority Acquisition   Swiss blockchain infrastructure for KYC/KYB regulatory compliance; 100+ financial institution clients. Extends SEALSQ’s post-quantum digital identity into regulated financial services and Web3.

 

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Taken together, these assets constitute an unparalleled end-to-end quantum value chain — from chip-level post-quantum cryptography and ASIC design, through quantum processor hardware, quantum interconnects, satellite infrastructure, industrial optimization, and sovereign regulatory compliance — all unified under a single strategic architecture accessible through SEALQuantum.com.

 

Carlos Moreira, Chairman & CEO, SEALSQ Corp noted, “Today’s closing of the Miraex acquisition marks a watershed moment for SEALSQ and for the broader quantum ecosystem. We have spent years assembling the assets required to deliver a truly sovereign, end-to-end quantum architecture, one that begins at the silicon level with our post-quantum chips and ASICs, extends through quantum processor hardware, passes through Miraex’s photonic interconnect layer, and ultimately reaches orbit through our Quantum Orbital Space Cloud. With Miraex now fully integrated, the Quantum Sovereign Vertical Stack is complete. The quantum internet is no longer a theoretical construct, for SEALSQ, it is a buildable, deployable roadmap that we can now begin to execute with customers, partners, and governments. We are grateful to the Miraex team for their vision and their extraordinary technical contributions, and we are proud to welcome them into the SEALSQ family as we focus on converting this unique strategic position into long-term value for our shareholders.”

 

Daniel Brau, CEO & Co-Founder, Miraex SA added, “Joining SEALSQ is the natural next step for Miraex. We built our TFLT PIC platform to be the connective tissue of the quantum ecosystem — linking quantum processors, sensors, and networks into one coherent infrastructure. SEALSQ brings the global semiconductor reach, the satellite infrastructure, and the post-quantum cryptography expertise to take that vision to planetary scale. We are proud that our technology will now form the quantum interconnect backbone of the QOSC constellation and of SEALSQ’s Quantum Sovereign Vertical Stack. The era of distributed, space-secured quantum computing begins today.”

 

About Miraex SA

 

Miraex is a deep-tech photonics company based at the EPFL Innovation Park in Ecublens, Switzerland, specializing in Thin Film Lithium Tantalate (TFLT) Photonic Integrated Circuits (PICs). Miraex’s technology enables quantum interconnectivity and entanglement across distributed quantum computing, quantum sensing, and global quantum networking applications. The company holds a proprietary patent portfolio covering electro-optical transduction and traveling wave transducer designs, and is an award-winning member of the Swiss National Startup Team. For more information, visit www.miraex.com.

 

4

 

 

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 www.sealsq.com.

 

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.

 

SEALSQ Corp
Carlos Moreira
Chairman & CEO
Tel: +41 22 594 3000
info@sealsq.com
 

SEALSQ Investor Relations (US)
The Equity Group Inc.
Lena Cati
Tel: +1 212 836-9611

Lena.cati@theequitygroup.com

 

5

FAQ

What did WISeKey’s subsidiary SEALSQ announce in this Form 6-K?

SEALSQ announced a majority investment in Wecan Group and the full acquisition of Miraex SA. Both moves expand its post-quantum cybersecurity, compliance, and quantum networking stack, supporting financial institutions, orbital infrastructure, and quantum-secure communications across several industries.

How much is SEALSQ investing in Wecan Group according to WISeKey (WKEY)?

SEALSQ is committing CHF 5 million to Wecan Group. The funds will accelerate development and deployment of an AI-powered compliance copilot and post-quantum financial security solutions for private banks, wealth managers, fintech firms, and other regulated financial institutions using Wecan’s platform.

What is the significance of SEALSQ acquiring 100% of Miraex SA?

SEALSQ’s acquisition of 100% of Miraex SA adds photonics-based quantum interconnect technology to its platform. Miraex’s Thin Film Lithium Tantalate photonic integrated circuits bridge quantum processors and quantum communication networks, helping complete SEALSQ’s Quantum Sovereign Vertical Stack and support its Quantum Orbital Space Cloud initiative.

How large is SEALSQ’s Quantum Fund mentioned in WISeKey’s 6-K filing?

SEALSQ’s Quantum Fund has total approved capital resources of $200 million. The filing states that over $65 million has already been deployed into various projects, including Miraex, to build a fully integrated Quantum Sovereign Vertical Stack and related quantum-secure infrastructure.

Who are Wecan Group’s key clients highlighted in WISeKey’s filing?

Wecan Group serves more than 100 financial institutions across over five countries. Named clients include prominent private banks such as Pictet, Lombard Odier, Edmond de Rothschild, Syz, and Barclays, reflecting its focus on high-end private banking and regulated financial services compliance.

What industries does SEALSQ target with its post-quantum semiconductor solutions?

SEALSQ targets multiple sectors with its post-quantum semiconductor and cryptography products. These include multi-factor authentication, smart energy, medical and healthcare systems, defense, IT network infrastructure, automotive, and industrial automation and control, all areas where long-term data security is critical.

What government-backed project involving SEALSQ is mentioned in the filing?

The filing notes Quantix Edge Security, a joint venture in Murcia, Spain, described as Spain’s first post-quantum semiconductor center. It has a €40M budget, including €19M from the Spanish government, and targets €25M in revenue while supporting European semiconductor sovereignty.

Filing Exhibits & Attachments

2 documents