WISeKey Reports H1 2025 Results; Updates on the Quantum Convergence Strategy Underpinned by a Strong Balance Sheet

Schedules Conference Call and Webcast for Friday, September 26 at 8:00 am ET (2:00 pm CET)

Geneva, Switzerland – September 23, 2025: – Ad-Hoc announcement pursuant to Art. 53 of SIX Listing Rules – WISeKey International Holding Ltd. (“WISeKey”, the “Group” or the “Company”) (SIX: WIHN, NASDAQ: WKEY), a global leader in cybersecurity, digital identity, and Internet of Things (IoT) innovations operating as a holding company, today announces its unaudited financial results for the six-month period ending June 30, 2025 (H1 2025).

WISeKey’s performance in the first half of 2025 is in line with our expectations, while the Company is executing on its strategy moving towards next-generation semiconductors, space connectivity, transactional IoT, trust services and blockchain, laying the foundation for sustainable long-term growth. Specifically:

The first half of 2025 marked a decisive step forward in WISeKey’s Convergence strategy.

By integrating semiconductors, trust services, satellites, blockchain, and digital identity into a unified architecture of trust, WISeKey is no longer operating separate businesses but a single interconnected ecosystem. This Convergence is starting to demonstrate its financial potential, as each component drives value creation for the others, enabling WISeKey to multiply revenues, reduce dependency on any single line of business, and capture new, recurring income streams.

For shareholders, the value of this model lies in its scalability and resilience. Hardware sales will generate immediate revenues, while OSPT services, satellite subscriptions and blockchain transactions will create recurring income streams that compound with adoption. A defense contractor adopting SEALSQ chips also becomes a potential client for OSPT services, a potential subscriber to WISeSat connectivity services, a potential participant in SEALCOIN t-IoT transactions, and potentially a user of WISe.ART for tokenized asset management. Few companies in the sector can offer this depth of vertical integration.

Strategic partnerships are amplifying these efforts.

As WISeKey moves into the second half of 2025, its focus is on scaling execution.

The Company is preparing for the commercial launch of SEALSQ’s QVault-TPM in Q4 2025 that is expected to unlock significant new growth in 2026 and beyond. It is expanding the WISeSat constellation to increase global coverage and subscription revenues. SEALCOIN and WISe.ART are being brought from pilot stages into commercial deployment and are expected to generate transaction-based income streams. WISeKey is also expanding its OSPT footprint, with the goal of allowing every SEALSQ chip to be rapidly personalized and integrated into the ecosystem.

With a robust revenue pipeline across the entire group—along with WISeKey’s strong balance sheet and growing recognition of its role at the intersection of quantum security, space connectivity, blockchain, and AI—WISeKey is building a sovereign, trusted digital infrastructure designed for scale, resilience, and long-term shareholder value. WISeKey is not merely adapting to technological change; it is shaping it.

Conference Call

The Company will host a conference call to review its results on Friday, September 26, 2025, at 8:00 am ET (2:00 pm CET).

Toll-Free Dial-In Number: 877-445-9755; International Dial-In Number: 201-493-6744.

The webcast of the call can be accessed through the Investor Relations section of WISeKey’s website at www.wisekey.com. An archived version of the call will also be made available.

WISeKey Group Structure and Participation

SEALSQ Corp (NASDAQ: LAES)

WISeSat.Space AG

SEALCOIN AG

WISe.ART

WISeKey SA (WISeID, INeS Platform and PKI as a Service)

Summary of WISeKey Participation

WISeKey has designed a vertically integrated Convergence ecosystem where each company bolsters and magnifies the impact the others — from chip to trust services to satellite to blockchain to marketplace.

UNAUDITED ADDITIONAL FINANCIAL & OPERATIONAL DATA

Unaudited Condensed Consolidated Statements of Comprehensive Income/(Loss) [as reported]

The notes are an integral part of our consolidated financial statements.

Unaudited Condensed Consolidated Balance Sheets [as reported]

The notes are an integral part of our consolidated financial statements.

Disclaimer
This communication expressly or implicitly contains certain forward-looking statements concerning WISeKey International Holding Ltd and its business. Such statements involve certain known and unknown risks, uncertainties and other factors, which could cause the actual results, financial condition, performance or achievements of WISeKey International Holding Ltd to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. WISeKey International Holding Ltd 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.

This press release does not constitute an offer to sell, or a solicitation of an offer to buy, any securities, and it does not constitute an offering prospectus within the meaning of the Swiss Financial Services Act (“FinSA”), the FinSa's predecessor legislation or advertising within the meaning of the FinSA. Investors must rely on their own evaluation of WISeKey and its securities, including the merits and risks involved. Nothing contained herein is, or shall be relied on as, a promise or representation as to the future performance of WISeKey.

Press and Investor Contacts