WISeKey International Holding Ltd reports that WISeSat.Space Holdings Corp. (“Pubco”), a wholly owned subsidiary of WISeSat.Space Corp., has filed a registration statement on Form F-4 with the SEC for a previously announced business combination with Columbus Acquisition Corp. (“CAC”). The deal is governed by a Business Combination Agreement dated November 9, 2025. Completion of the transaction requires the Form F-4 to be declared effective, approval of CAC shareholders, and Nasdaq approval to list Pubco’s registered shares. If completed, both WISeSat and CAC will become subsidiaries of Pubco, and the combined company is expected to trade on Nasdaq under the ticker symbol “SAIQ”.
Wisekey International Holding S.A. insider activity reflects an amended report for Chief Innovation Officer Andreas Feuardent Moreira’s indirect holdings. His wife exercised 440 options under an Employee Stock Option Plan at an exercise price of $3.14 per option, disposing of the derivative securities and leaving no remaining options from this grant. This Form 4/A corrects an earlier filing that had mistakenly described the transaction as an acquisition of derivative securities rather than a disposition upon option exercise.
Wisekey International Holding S.A. insider Andreas Feuardent Moreira reported routine equity compensation activity involving Class B Shares held indirectly through his wife. On June 8, 2026, an employee stock option for 440 Class B Shares was exercised at an effective price of about $3.14 per share.
In connection with this exercise, 139 Class B Shares were disposed of as a tax-withholding payment at an effective price of about $10.51 per share, reflecting a tax-offset structure rather than an open-market sale. Following these transactions, 301 Class B Shares are reported as indirectly owned through his wife, and the related option position is fully exercised.
WISeKey International Holding reported that its subsidiary SEALCOIN secured a $4 million strategic investment commitment to advance a space-based blockchain transaction layer for machines and satellites. The funding includes $1 million from The Hashgraph Group and $3 million from WISeKey.
The capital is intended to support development of the QAIT-powered SEALCOIN ecosystem, integrating WISeSat satellites, secure semiconductor technology and decentralized identity infrastructure. SEALCOIN recently completed its SPACEDROP campaign, where more than 45,000 participants interacted with 19 operational WISeSat satellites to validate satellite-to-blockchain communications.
WISeKey International Holding AG reports that its subsidiary SEALSQ Corp has entered into and closed a Series A Investment Agreement to acquire a minority interest in French quantum computing company Quobly SAS. SEALSQ subscribed for Series A preferred shares with attached broad-based anti-dilution ratchet warrants for an aggregate investment of EUR 14,999,400, subject to conditions precedent that have now been satisfied.
The ratchet warrants adjust SEALSQ’s subscription price if Quobly issues additional shares over the next four years at a lower price than the Series A price. As part of the deal, SEALSQ gained the right to appoint one member to Quobly’s supervisory board and named its CEO, Carlos Moreira, to that seat. Any two investor-appointed board members may veto certain major Quobly decisions, such as bylaws changes, mergers, major reorganizations, or new securities issuances.
An accompanying press release notes that SEALSQ participated as a lead investor in Quobly’s €115 million Series A round via the SEALSQ Quantum Fund, positioning the investment as a key step in SEALSQ’s quantum security and infrastructure strategy.
WISeKey International Holding Ltd reports that its WISeSat subsidiary has confidentially submitted an amended draft registration statement on Form F-4 to the SEC on May 29, 2026. This filing supports a previously announced proposed business combination among WISeSat, Columbus Acquisition Corp, Pubco and related entities.
Upon completion of the transaction, WISeSat and Columbus Acquisition Corp are expected to become subsidiaries of Pubco, with the combined company anticipated to trade on Nasdaq under the ticker “WSAT,” subject to regulatory effectiveness, Nasdaq listing approval and Columbus Acquisition Corp shareholder approval.
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.”
WISeKey International Holding Ltd has called its 2026 Annual General Meeting for June 29, 2026 in Zurich, with shareholders able to attend in person or vote via proxies and electronic instructions. The Board asks shareholders to approve the 2025 Annual Report and audited consolidated and statutory financial statements, for which auditor BDO SA issued unqualified opinions.
Shareholders are asked to discharge the Board and Executive Management from liability for 2025 and to carry forward a total accumulated loss of CHF 82,633,720, including a 2025 net loss of CHF 1,801,504. Proposals include re-electing seven current directors and electing Andrew Forson as a new director, re-electing Carlos Moreira as Chairman, re-electing three members of the Nomination & Compensation Committee, confirming BDO SA as auditor, and re-electing Anwaltskanzlei Keller AG as Independent Proxy.
The agenda also covers an advisory vote on the 2025 compensation report and several binding compensation votes: a maximum aggregate Board compensation of CHF 2,000,000 for the 2026/2027 term, a maximum Executive Management compensation of CHF 7,500,000 for 2027, an increase in the previously approved 2026 Executive Management cap from CHF 6,000,000 to CHF 15,000,000, and additional 2025 Executive compensation of CHF 1,530,301 in SEALSQ share options. The Board also reiterates its intention to redomicile the company from Switzerland to the British Virgin Islands via a cross-border merger, subject to regulatory and shareholder approvals expected to be sought in the third quarter of 2026.
WISeKey International Holding Ltd reports strong growth and a major shift toward scaling its quantum-secure platform. For 2025, the group delivered $19.3 million in revenue, a 62% year-over-year increase, with SEALSQ growing 66%. Q4 2025 revenue reached $8 million, doubling Q4 2024, while Q1 2026 revenue was $4.2 million, up 200% versus Q1 2025.
The company ended 2025 with $429 million in cash and short-term investments, rising to over $535 million as of April 2026, supporting its capital-intensive strategy. SEALSQ’s commercial pipeline exceeds $200 million for 2026–2029, and management reaffirms expectations of 50% to 100% revenue growth in 2026, driven mainly by SEALSQ.
WISeKey highlights integration of its five pillars into a single quantum-secure ecosystem, progress toward a 100-satellite WISeSat constellation with 21 satellites launched and 14 operational, and a $200 million SEALSQ Quantum Fund for strategic investments. The company positions itself to benefit from tightening global post-quantum security requirements and the rollout of its QS7001 quantum-resistant semiconductor, expected to begin production revenues in late 2026.
WISeKey International Holding Ltd, a foreign private issuer based in Zug, Switzerland, submitted a Form 6-K for May 2026. The filing indicates that the company files its annual reports under Form 20-F and furnishes its 2025 Annual Report as Exhibit 99.1.
The report is signed on behalf of the company by Chief Executive Officer Carlos Moreira and Chief Financial Officer John O’Hara.