WISeKey International Holding Ltd reported audited results for Q4 and full year 2025, showing strong top-line momentum but continued losses. Net sales reached 19,289 thousand in 2025, up from 11,875 thousand in 2024, a +62% increase, with Q4 2025 revenue doubling to $8M.
The group recorded a 2025 net loss of 38,154 thousand, though the net loss attributable to WISeKey shareholders narrowed to 6,072 thousand. Cash and cash equivalents surged to 429,244 thousand as of December 31, 2025, compared with 90,600 thousand a year earlier, supporting heavy R&D and strategic investments.
Subsidiary SEALSQ delivered 66% revenue growth in 2025 and has deployed over $20M into quantum-related acquisitions and partnerships, within an approved capital allocation raised to $200M by April 30, 2026. WISeKey reported a Q1 2026 revenue of $4.2M, over 200% above Q1 2025, and expects FY 2026 revenue growth of +50% to +100%, mainly driven by SEALSQ.
WISeKey International Holding files its annual report describing a security-focused technology group heavily dependent on subsidiary SEALSQ’s semiconductor business. For 2025, SEALSQ generated 95% of WISeKey’s revenue, exposing results to semiconductor cyclicality, pricing pressure, and customer demand swings.
The report highlights execution risk around next-generation post-quantum cryptography chips, which still face qualification and Common Criteria certification, with commercialization expected from the second half of 2026. It also details reliance on third‑party foundries and packaging partners, concentrated customers such as Cisco, extensive cybersecurity and cryptography risks, evolving data-privacy and encryption regulation, and potential disruption from geopolitical tensions and shifting U.S. tariff policy affecting global semiconductor supply chains.
SEALSQ Corp, a subsidiary of WISeKey International Holding, reported preliminary Q1 2026 revenue of about $4.1 million, up from $1.3 million in Q1 2025, showing growth of more than 200% as demand rose across its product portfolio.
The company reaffirmed its full-year 2026 revenue guidance, expecting 50% to 100% year-over-year growth, supported by expanding post-quantum semiconductor and cybersecurity opportunities. SEALSQ ended the quarter with over $525 million in cash and short-term investments after completing a $125 million registered direct offering.
Management highlights an active business pipeline exceeding $200 million in potential revenue for 2026–2029, including more than $60 million tied to its QS7001 post-quantum secure element and QVault TPM programs. Certification work for QS7001, including key Common Criteria and NIST-related evaluations, is progressing positively and supports customer adoption efforts.
WISeKey International Holding furnished a Form 6-K featuring SEALSQ Corp’s audited FY 2025 results and 2026 outlook. SEALSQ reported 2025 net sales of $18,252k, up 66% year over year, but an operating loss of $39,799k and a net loss of $34,194k.
Cash and cash equivalents rose sharply to $417,657k as of December 31, 2025, with total assets of $504,179k and shareholders’ equity of $461,508k. Q1 2026 revenue is expected to exceed $4,000k, more than doubling Q1 2025, and FY 2026 revenue is guided to grow between 50% and 100%.
SEALSQ highlights a business pipeline exceeding $200,000k for 2026–2029, including over $60,000k tied to QS7001 and QVault TPM programs, progress toward Common Criteria EAL5+ and FIPS 140-3 certifications, and strategic moves such as the IC’ALPS acquisition and a Letter of Intent to acquire Miraex.
Wisekey International Holding S.A. filed an initial insider ownership report for officer David Levinger, whose title is listed as BDM WISeSat. This Form 3 does not show any stock transactions, exercises, gifts, or tax withholdings and functions as a baseline disclosure of his status as an officer.
Wisekey International Holding S.A. executive Bernard Vian, General Manager of SEALSQ France, has filed an initial Form 3 insider ownership report. The filing lists no insider transactions or derivative positions and serves to register his status as a reporting officer of the company.
Wisekey International Holding S.A. filed a Form 3 insider report for Company Secretary Nathalie Claude Odile Verjus. The filing lists her as an officer but, in the provided data, shows no reportable transactions, no shareholdings, and no derivative positions, serving purely as an initial ownership statement.
Wisekey International Holding S.A. executive Jonathan Simon Llamas, VP of Decentralized Strategy, has filed a Form 3 as an insider of the company. This filing serves as his initial statement of beneficial ownership. The excerpt does not show any reported transactions or specific share holdings.
Wisekey International Holding S.A. filed an initial insider ownership report for Gwenael Jerome Rouy-Poirier, who serves as CFO of WiseSat. This Form 3 does not list any securities transactions or holdings, indicating only that this executive is now a reporting person for the company.
Wisekey International Holding S.A.’s Chief Innovation Officer, Andreas Feuardent Moreira, has filed an initial Form 3 detailing his equity interests in the company. The filing shows beneficial ownership of 880 Class B Shares held directly, establishing his starting common share position as an officer.
In addition, he is reported to have an indirect interest, via his wife, in an Employee Stock Option Plan over 440 Class B Shares with an exercise price of $2.50 per share and an expiration date of September 26, 2026. These entries are reported as holdings rather than new market purchases or sales, so the document mainly clarifies his existing stake and outstanding options.