WISeKey International Holding Ltd (SIX: WIHN) told the market on July 13, 2026 that preliminary unaudited revenue for the six months to June 30, 2026 was approximately $11.4 million, an increase of 115% on the same period of 2025, and left its full-year guidance of 50% to 100% revenue growth unchanged. The Zug-based group, which also trades on Nasdaq under the symbol WKEY and files with the U.S. Securities and Exchange Commission under commission file number 001-39115, furnished the release to the SEC as exhibit 99.1 to a Form 6-K the following day.
What the company disclosed
The figures are preliminary and unaudited, subject to completion of half-year closing procedures, with full consolidated results expected in September 2026 alongside an earnings conference call. WISeKey attributed the revenue increase to its post-quantum semiconductor, digital identity and public key infrastructure businesses.
The balance sheet claim is larger than the revenue line. WISeKey reported approximately $495 million in cash and short-term investments as of June 30, 2026 with zero debt, and said that position lets its subsidiary SEALSQ fund its post-quantum, quantum and Quantum Space Orbital Cloud roadmaps without near-term financing pressure. The company said that cash reflects SEALSQ capital markets activity including a $125 million registered direct offering completed in March 2026.
SEALSQ is also credited with an active commercial pipeline exceeding $225 million through 2029, which WISeKey attributes to demand for post-quantum cryptography ahead of regulatory migration deadlines in the United States and Europe. The company labelled that figure a management estimate subject to conversion risk, customer validation and technical integration.
Three corporate transactions sit behind the release. In June 2026 WISeKey and SEALSQ established Quantisimo Corp. as a special purpose vehicle and signed a non-binding letter of intent with GigCapital8 Corp. to create a publicly traded quantum computing company at an initial enterprise value of $575 million, targeted to close in the first quarter of 2027. On June 23, 2026 WISeSat.Space Holdings Corp., a wholly owned subsidiary of WISeSat.Space Corp., filed a registration statement on Form F-4 with the SEC for the business combination with Columbus Acquisition Corp, listed on Nasdaq as COLA, under a business combination agreement dated November 9, 2025. If it completes, the combined company is expected to trade on Nasdaq as SAIQ, subject to the registration statement being declared effective, Columbus shareholder approval and Nasdaq listing approval. Separately, SEALSQ completed the acquisition of MiraEx, a Swiss developer of photonics-based quantum interconnects, and co-led a $130 million Series A financing of Quobly alongside Bpifrance and STMicroelectronics.
The group also reported the start of operations at Quantix Edge Security, a Spanish joint venture developing a semiconductor design and personalisation centre in the Region of Murcia, and a post-quantum identity partnership with the Geneva-based Wecan Group.
What the offering documents show
The March financing is on file in detail. SEALSQ Corp, which trades on the Nasdaq Global Select Market as LAES, sold 22,913,630 ordinary shares plus pre-funded warrants for up to 7,500,000 ordinary shares, each unit accompanied by a Class E warrant, at a combined offering price of $4.11 under a securities purchase agreement dated March 15, 2026. The Class E warrants cover up to 60,827,260 ordinary shares, are exercisable at $5.50 and expire seven years after issuance. The prospectus supplement records that the last reported sale price of the ordinary shares on March 13, 2026 was $3.86, that Maxim Group LLC acted as sole placement agent for a fee of 6.0% of the aggregate purchase price plus up to $100,000 of counsel expenses, and that net proceeds were estimated at approximately $117 million.
Analysis: the cash pile and the revenue line are not the same story
The arithmetic worth noticing is the ratio between the two headline numbers. Half-year revenue of approximately $11.4 million sits against approximately $495 million of cash and short-term investments. Most of that cash was not generated by the operating business. It came from securities issuance at SEALSQ, and the March prospectus supplement shows the shape of it: 22,913,630 shares and pre-funded warrants for 7,500,000 more, sold with warrants over up to 60,827,260 additional shares at $5.50. The share count that could eventually be created by that single transaction is several times the number of shares actually sold in it. A reader assessing the balance sheet should read it alongside that potential issuance rather than as a settled capital position.
The 115% growth rate is real but starts from a small base and is preliminary. Guidance of 50% to 100% for the full year is a lower range than the half-year outturn, so the guidance does not carry the first-half rate forward. Neither the release nor the 6-K breaks revenue down by segment or by subsidiary, so the split between the semiconductor business and the identity and PKI operations is not yet visible. September is when that arrives.
The $225 million pipeline figure through 2029 carries the company’s own caveat in the release. It is a management estimate of orders that have not converted. The regulatory driver behind it, however, is documented. Executive Order 14412 of June 22, 2026, published in the Federal Register on June 25, 2026, directs the Office of Management and Budget to issue guidance within 90 days requiring agencies to transition all high value assets and high impact systems, excluding National Security Systems, to post-quantum cryptography for key establishment by December 31, 2030 and for digital signatures by December 31, 2031. Agency heads had 30 days to name a PQC migration lead, and NIST was given 180 days to start a migration pilot on a subset of its own systems, to be completed no later than December 31, 2027.
That detail cuts two ways for a supplier. The deadlines are real and they are federal, which supports the demand argument. But the order covers federal information systems and directs assistance to critical infrastructure operators; it does not itself purchase hardware, and the operative document is the OMB guidance the order calls for rather than the order itself. The date most often quoted as 2030 is specifically the key establishment deadline, with signatures running a year later.
What this disclosure does not establish is whether any of the three announced transactions will complete. The Quantisimo letter of intent is explicitly non-binding. The WISeSat combination depends on an F-4 that has been filed but not declared effective, on a shareholder vote and on a Nasdaq listing decision. The $575 million figure attached to Quantisimo is an initial enterprise value in a term sheet, not a price paid. A careful reader would treat the September consolidated accounts, the effectiveness of the F-4 and any definitive agreement replacing the Quantisimo letter of intent as the three checkpoints that convert this release from intent into record.
The announcement was made as an ad hoc announcement pursuant to Art. 53 of the SIX listing rules. The Directive on Ad hoc Publicity in force since 1 December 2025 requires such a disclosure to reach SIX Exchange Regulation, at least two electronic information systems widely used by professional market participants and at least two Swiss media of national importance, and to remain on the issuer’s own website for three years.
