SEALSQ Announces FY 2025 Key Preliminary / Unaudited Financials Metrics: Reports 66% Year Over Year Revenue Growth to $18 Million

• Entered 2026 With a Strong Commercial Momentum
• Expects Q1 2026 Revenue to Grow over 100% as Compared to Q1 2025
• Reaffirms FY2026 Guidance with Revenue Expected to Grow Between 50%-100% Year Over Year

Geneva,Switzerland – February 17, 2026 - SEALSQ Corp (NASDAQ: LAES) (“SEALSQ” or the“Company”), a global leader in semiconductor, PKI, and post-quantum securitytechnologies, today announces key preliminary operational and financial metrics for fourth quarter (“Q4”) and full year (“FY”)2025, provides first quarter 2026 revenue expectations, and reaffirms FY 2026revenue guidance. All numbers reportedare preliminary and unaudited. TheCompany expects to publish its audited full-year financial statements on orbefore March 31, 2026.

FY 2025 KeyFinancial and Operational Highlights

• FY 2025 revenuereached $18 million, representing a 66% increase year-over-year, of which $8 million wasgenerated in Q4 2025, as compared to $4 million in Q4 2024. Revenue growth wasdriven by renewed demand across core semiconductor and PKI product lines, fivemonths of revenue contribution from IC'ALPS SAS (“IC’ALPS”) following itsacquisition on August 4, 2025, which represented approximately $3.5 million and early traction inpost-quantum technology programs. While 2025 numbers reflected the continuedtransition from current generation product offerings to next-generationpost-quantum semiconductor platforms, that transition has now entered itscommercial acceleration phase.

• FY 2025 net loss isexpected to be in range of $30 – 40 million, representing an increase in lossagainst the FY 2024 net loss of $21 million. The 2025 net loss includes further investment in our research &development, and sales & marketing efforts designed to accelerate growthwith the launch of the new post-quantum semiconductor product range, increasedoperating expenses due to the consolidation of IC’ALPS since August 2025 aswell as a non-cash Share Based Compensation charge of approximately $9 million .
• Ended the year witha strong balance sheet. As of December 31, 2025, SEALSQ held over $425 million in cash,providing one of the strongest liquidity positions in its sector, even afterdeploying $30 million during the year toward strategic investments in WeCanGroup, IC’ALPS, Quantix Edge and WISeSat.Space (WISeSat), a secure satelliteand critical digital satellite infrastructure company and a subsidiary of SEALSQ’sparent company, WISeKey International Holding Ltd (“WISeKey”) (SIX: WIHN,NASDAQ: WKEY), a leading global cybersecurity, blockchain, and IoT company. Thiscapital base enables accelerated post-quantum R&D, manufacturing scale-up,strategic acquisitions and ecosystem investments and vertical integration inASIC design and quantum infrastructure.
• Active businesspipeline estimated to total over $200 million as of December 31, 2025, reflecting potentialrevenue opportunities with both current and potential new customers from 2026through 2028, including more than $60 million linked to QS7001 and QVault TPMprograms. This pipeline highlightsrising global demand for quantum-resistant security and sovereign semiconductordesign and the continued evolution of our business development activities. These figures reflect management estimatesand are subject to conversion risks, customer validation, and technicalintegration amongst other topics.

CarlosMoreira, CEO of SEALSQ, stated: “Our 66% revenue growth in 2025, combined with initialexpectations of Q1 2026 revenue exceeding $4 million, mark a clear inflectionpoint for SEALSQ. We are transitioning from a development and investment cycleinto a structured commercial acceleration phase. With more than $425 million incash, an estimated $200+ million of new potential revenue opportunities pipeline,and growing global demand for quantum-resistant infrastructure, SEALSQ isstrategically positioned to become a cornerstone player in sovereignsemiconductor and quantum-security ecosystems worldwide.”

SEALSQ Enters2026 Well Positioned for Structural Growth and Commercial Acceleration

SEALSQ hasentered 2026 with clear commercial momentum. The Company remains focused onscaling production, accelerating post-quantum innovation, expanding globalpartnerships, and securing its role as a leader in the emergingquantum-security infrastructure market. Q1 2026 revenue isexpected to exceed $4 million, representing a substantial increase of over 100%on Q1 2025 and signaling accelerated demand across our traditional productportfolios, as our pipeline continues to grow with opportunities. Specifically,the anticipated Q1 2026 growth reflects expected increased revenue fromVault-IC secure element technology increasing as more objects require Internetsecure connections and the full-quarter consolidation of IC’ALPS.

FY 2026Outlook

SEALSQ’soutlook statements are based on current expectations. The following statementsare forward-looking and actual results could differ materially depending onmarket conditions and the factors set forth under “Forward Looking Statements”below.

The Companybelieves the strong Q1 2026 start reinforces confidence in its previouslycommunicated FY 2026 guidance with revenue growth expected to be between 50% to100% year-over-year, which is supported by:

• A full-year consolidation of the revenue of IC’ALPS compared to five months in the current year
• Continued growth in our current range of secure semiconductor products as well as entry into the Trusted Platform Module (“TPM”) market
• The commercialization of the QS7001 post-quantum and QVault TPM product range with first revenues anticipated for the latter part of 2026.
• The launch of a custom post-quantum enabled chip development with contractualization expected in the second half of 2026 reflecting our ability to deliver tailor made security integrated circuits (“ASICs”)
• The anticipated adoption of Post-Quantum Cryptography as a reaction to the threat of quantum computing to traditional encryption methods
• Growth in PKI subscription contracts as a result of multiple market trends including the growth in digital transactions, the increasing frequency and sophistication of cyberattacks and the growing adoption of cloud-based models and remote working
• Initial revenues expected to be generated by SEALSQ from the Quantix Edge project and sovereign semiconductor initiatives

ExpandingCommercial Pipeline

TheCompany’s active business pipeline now exceeds $200 million in potentialrevenue opportunities from 2026 through 2028, including more than $60 millionlinked to QS7001 and QVault TPM programs.

Thispipeline reflects:

• Rising global demand for quantum-resistant security
• Government-driven sovereign semiconductor programs
• Increasing brand awareness and global market penetration of SEALSQ

Strategic Investmentsand Vertical Integration

During2025, SEALSQ deployed approximately $30 million into strategic investmentsaimed at strengthening our vertical integration. These investments included:

• IC’ALPS - custom semiconductor design capabilities (ASIC design - Application Specific Integrated Circuit - and QASIC, the Quantum-Resistant ASIC)
• Quantix Edge Security - semiconductor Design, Test and Personalization Centers
• WISeSat - quantum resistant enabled secure satellite communications for IoT applications
• WeCan Group - KYC infrastructure within the financial sector
• EeroQ – a quantum chip design company pioneering a breakthrough approach to building a quantum computer using electrons on helium (eHe)

Smart Meterand PKI Expansion Drives Scalable, High-Margin Recurring Revenue

SEALSQcontinues to expand recurring revenue streams in its smart meter and Public KeyInfrastructure (PKI) offerings, which are expected to contribute substantiallyto 2026 revenue growth, through new and expanded semiconductor or PKI contractswith leading industrial OEM partners like Landis & Gyr and the growingdeployment of lifecycle certificate-management solutions in the US, Asia andEurope.

Other Technological Milestones:

QuantumShield QS7001, a next-generation secure chip that integrates NIST-standardizedPost-Quantum Cryptography (PQC) algorithms directly at the hardware level,represents a foundational step in SEALSQ’s quantum-secure roadmap.

In 2025, SEALSQ significantly strengthened its vertical Quantum platformstrategy, expanding beyond its established hardware Root of Trust leadershiptoward full-stack quantum integration, from secure silicon to qubit generation,interconnected through a sovereign Quantum Highway. To accelerate this vision, the Companyinitiated targeted investments across the quantum value chain including:

• Foundational Layer:Post-Quantum Silicon: SEALSQ reinforced its post-quantum semiconductor roadmap throughinvestments to develop advanced cryptographic IP, next-generation secure chips,TPM architectures, and quantum-resistant chiplets. These investments aim to ensurelong-term protection against emerging quantum threats to position SEALSQ as aleader in crypto-agile, quantum-secure silicon.
  

• ComputationalLayer: Quantum Processing Ecosystems: SEALSQ began strategic participation in quantumprocessor ecosystems, including qubit hardware platforms, and quantum-classicalinterface technologies. This ensures exposure to qubit generation and secureorchestration layers, extending SEALSQ’s security architecture from deviceauthentication to quantum computing as a service.

Together,these initiatives and investments advance SEALSQ’s objective of building avertically integrated quantum-secure ecosystem, securing identity at thesilicon level, protecting communications in transit, and enabling trustedaccess to quantum processing environments. This strategy aims at positioningSEALSQ as a key architect of next-generation digital trust infrastructure inthe emerging quantum era.

About SEALSQ:

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

SEALSQ ispioneering 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 andHealthcare Systems, Defense, IT Network Infrastructure, Automotive, andIndustrial Automation and Control Systems. By embedding Post-QuantumCryptography into our semiconductor solutions, SEALSQ ensures thatorganizations stay protected against quantum threats. Our products areengineered to safeguard critical systems, enhancing resilience and securityacross diverse industries.

For moreinformation on our Post-Quantum Semiconductors and security solutions, pleasevisit www.sealsq.com.

Forward-Looking Statements

This communication expressly or implicitly contains certainforward-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 ordevelopments that we expect or anticipate will occur in the future, as well asany other statements which are not historical facts. Although we believe thatthe expectations reflected in such forward-looking statements are reasonable,no assurance can be given that such expectations will prove to have beencorrect. These statements involve known and unknown risks and are based upon anumber of assumptions and estimates which are inherently subject to significantuncertainties and contingencies, many of which are beyond our control. Actualresults may differ materially from those expressed or implied by suchforward-looking statements. Important factors that, in our view, could causeactual results to differ materially from those discussed in the forward-lookingstatements include the risks related to the finalization of the financialresults for the year ended December 31, 2025; our ability to convert ourpipeline into actual sales; the global demand for quantum-resistantinfrastructure; timing of global adoption of quantum-resistant security;continued growth in our current range of secure microcontroller products; theamount of revenue from the commercialization of the QS7001 post-quantum productrange; the ability to launch additional post-quantum chips; our ability to growPKI subscription contracts; risk associated with the integration of newlyacquired business lines; ability to gain initial revenues from the Quantix Edgeproject and sovereign semiconductor initiatives; our ability to expand ourrevenue streams; the expansion ofgovernment-driven sovereign semiconductor programs; whether there will be increased enterprisedemand for hardware-rooted digital trust; SEALSQ's ability to continuebeneficial transactions with material parties, including a limited number ofsignificant customers; market demand and semiconductor industry conditions; andthe risks discussed in SEALSQ's filings with the SEC. Risks and uncertaintiesare further described in reports filed by SEALSQ with the SEC. As a result, the preliminaryfinancial results contained in this press release may materially differ fromthe actual results that will be reflected in the consolidated financialstatements for the fiscal year 2025 when they are completed and publicly disclosed.

SEALSQ Corp 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.