WISeKey and Its Subsidiary WISeSat.Space Corp. Announce Filing of Registration Statement on Form F-4 with the U.S. Securities and Exchange Commission
Rhea-AI Summary
WISeKey (Nasdaq: WKEY) and subsidiary WISeSat.Space announced that WISeSat.Space Holdings Corp. (Pubco) filed a Form F-4 registration statement with the SEC on May 29, 2026, for a proposed business combination with Columbus Acquisition Corp (Nasdaq: COLA).
Upon closing and SEC effectiveness, WISeSat and CAC would become Pubco subsidiaries, the combined company is expected to trade on Nasdaq as SIOQ, and Pubco plans a strategic transformation under the SPACEAIQ brand focused on secure space, AI and quantum-resilient infrastructure.
Positive
- Form F-4 filed for WISeSat–CAC business combination
- Combined company expected to list on Nasdaq under ticker SIOQ
- Pubco to launch SPACEAIQ brand for space, AI and quantum focus
- WISeSat aims to build quantum‑resilient, sovereign satellite connectivity platform
- Exclusive financial advisor and legal counsel appointed for all key parties
Negative
- Registration statement not yet declared effective by the SEC
- Business combination subject to CAC shareholder approval and other closing conditions
- Nasdaq listing of Pubco shares still requires exchange approval
- Completion timing uncertain due to SEC review and regulatory processes
News Market Reaction – WKEY
In the Jun 24 session, WKEY declined 3.73%, reflecting a moderate negative market reaction. Argus tracked a peak move of +8.5% during that session. Our momentum scanner triggered 2 alerts that day, indicating moderate trading interest and price volatility.
Data tracked by StockTitan Argus on the day of publication.
Key Figures
Historical Context
| Date | Event | Sentiment | 24h Move | Catalyst |
|---|---|---|---|---|
| Jun 23 | Quantum security policy | Positive | -2.6% | Company welcomed US quantum-security executive order and highlighted related offerings. |
| Jun 18 | NFT tech patent | Positive | -3.4% | Subsidiary gained European patent for hardware-authenticated NFT art platform. |
| Jun 10 | Subsidiary investment | Positive | -2.6% | Announced $4M strategic commitment to SEALCOIN to advance space-based blockchain. |
| Jun 08 | Platform launch | Positive | +5.3% | Launched QAIT Q-Day security assessment platform with blockchain partners. |
| Jun 04 | F-4 draft filing | Positive | +4.8% | Confidential submission of amended Form F-4 for WISeSat SPAC combination. |
24h Move is the share-price change in the day after each event; other market factors may also have contributed.
Recent WISeKey news, often positive on quantum and space initiatives, has produced mixed reactions with a slight tilt toward downside moves.
Key Terms
registration statement regulatory
form f-4 regulatory
special purpose acquisition company financial
proxy statement regulatory
prospectus regulatory
AI-generated analysis. How Rhea-AI works. Not financial advice.
WISeKey and Its Subsidiary WISeSat.Space Corp. Announce Filing of
Registration Statement on Form F-4 with the U.S. Securities and Exchange Commission
Canton of Zug, Switzerland— June 24, 2026 — WISeKey International Holding Ltd. (“WISeKey”) (SIX: WIHN; Nasdaq: WKEY), a global leader in cybersecurity, digital identity and IoT, and its subsidiary WISeSat.Space Corp. (“WISeSat”) today announced the filing of a registration statement on Form F-4 with the U.S. Securities and Exchange Commission (“SEC”) on May 29, 2026 by WISeSat.Space Holdings Corp. (“Pubco”), a wholly-owned subsidiary of WISeSat.
The registration statement has not been declared effective by the SEC. The registration statement relates to the previously announced proposed business combination pursuant to a definitive Business Combination Agreement, dated November 9, 2025 (the “Business Combination Agreement”), by and among WISeSat, Columbus Acquisition Corp (Nasdaq: COLA) (“CAC”), a special purpose acquisition company, Pubco, WISeKey, and WISeSat Merger Sub Corp. Subject to the registration statement being declared effective by the SEC, and upon completion of the proposed business combination, each of WISeSat and CAC will become subsidiaries of Pubco, and the combined company is expected to trade on Nasdaq under the ticker symbol “SIOQ.”
Upon completion of the proposed business combination, Pubco is expected to begin a strategic transformation under the brand SPACEAIQ, reflecting its expanded mission at the intersection of Space Infrastructure, Artificial Intelligence, and Quantum Technologies. The WISeSat brand will continue to serve as the identity of the company’s satellite business and space connectivity infrastructure, while SPACEAIQ will represent the broader corporate vision encompassing secure space-based communications, AI-driven autonomous systems, quantum-resilient cybersecurity, and next-generation digital infrastructure.
WISeSat is a British Virgin Islands business company developing secure satellite infrastructure and space-based services designed to support trusted communications, digital identity, secure data exchange and other security-sensitive applications. By combining low-earth-orbit satellite assets with advanced cryptographic and identity technologies, WISeSat aims to provide persistent, secure connectivity for use cases such as government communications, industrial IoT, critical infrastructure monitoring and disaster-resilient networks. As part of the WISeKey group, WISeSat aims to extend Root of Trust and quantum-resilient security architectures into space, enabling end-to-end protection of data and devices across both terrestrial and space-based networks.
Carlos Moreira, Chief Executive Officer of WISeSat, said: “This public filing is more than a procedural step; it is an important milestone in WISeSat’s intended path to become a Nasdaq-listed space infrastructure company as it reflects continued progress on the proposed business combination with CAC and our objective to create a European, quantum‑secure satellite platform for sovereign and trusted connectivity. Strategic autonomy increasingly starts in space, and the next generation of trusted connectivity will require secure satellite infrastructure, post-quantum technologies and digital identity working together from orbit. By leveraging the WISeKey group’s expertise in Root of Trust, quantum-resistant semiconductors, authentication and trusted identity, we believe WISeSat is positioned to contribute to a new European model for sovereign, quantum-resilient communications infrastructure. While the proposed transaction remains subject to SEC review, CAC shareholder approval and other closing conditions, this process marks a major step forward in WISeSat’s ambition to become a leading European quantum-secure space technology company.”
The completion of the proposed transaction contemplated by the Business Combination Agreement remains subject to certain closing conditions, including the approval of CAC shareholders, the effectiveness of the registration statement, and approval of the listing of the registered shares of Pubco by Nasdaq.
Advisors
Maxim Group LLC is acting as exclusive financial advisor to WISeKey in connection with the business combination. Ellenoff Grossman & Schole LLP is acting as legal advisor to WISeSat and Pubco. Loeb & Loeb LLP is acting as legal advisor to CAC.
Important Information about the Proposed Business Combination and where to Find it
In connection with the proposed business combination, Pubco has filed a registration statement on Form F-4 (the “Registration Statement”) with the SEC, including a proxy statement of CAC and a prospectus for registration of shares of Pubco. The Registration Statement has not yet been declared effective by the SEC. Subject to the SEC declaring the Registration Statement effective, its proxy statement/prospectus will thereafter be sent to CAC shareholders for purposes of voting in a meeting of CAC shareholders to approve the business combination and related matters. Before making any voting decision, securities holders of CAC are urged to read the proxy statement/prospectus, when available, and all other relevant documents filed or that will be filed with the SEC in connection with the proposed business combination as they become available, because they will contain important information about the proposed business combination and the parties to the proposed business combination.
Investors and other interested persons will be able to obtain free copies of the Registration Statement, its proxy statement/prospectus and exhibits, and all other relevant documents filed or that will be filed with the SEC by Pubco, CAC and WISeKey through the website maintained by the SEC at www.sec.gov. In addition, the documents filed by WISeKey or Pubco may be obtained free of charge from WISeKey’s website at https://www.wisekey.com/, or by written request to WISeKey, General-Guisan-Strasse 6 Zug, 6300, Switzerland, Attention: Chief Financial Officer. The documents filed by CAC may be obtained free of charge by written request to Columbus Acquisition Corp, 14 Prudential Tower Singapore, 049712 Singapore.
Participants in the Solicitation
CAC, Pubco, WISeSat, WISeKey and their respective directors, executive officers and other members of management may be deemed to be participants in the solicitation of proxies from CAC shareholders in connection with the proposed business combination. Information regarding CAC’s directors and executive officers is available in CAC’s filings with the SEC. Additional information regarding the persons who may be deemed participants in the solicitation and a description of their direct and indirect interests will be included in the Registration Statement and its accompanying proxy statement/prospectus when publicly filed with the SEC.
No Offer or Solicitation
This communication is for informational purposes only and does not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation of any vote, consent or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful before registration or qualification under the securities laws of any such jurisdiction. Any offering of securities in connection with the proposed business combination will be made only by means of a prospectus meeting the requirements of applicable law.
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About WISeSat
WISeSat owns WISeSat.Space AG, a Swiss company, and is headquartered in Zug, Switzerland. WISeSat currently operates as a subsidiary of WISeKey. WISeSat’s nanosatellite constellation is designed to deliver real-time, low-cost, and secure IoT connectivity for sectors including energy, logistics, infrastructure, and climate monitoring. Through advanced encryption and distributed ledger integration, WISeSat enables tamper-proof, decentralized communication frameworks that support critical global applications.
About WISeKey International Holding AG
WISeKey International Holding Ltd (Nasdaq: WKEY; SIX: WIHN) is a global leader in cybersecurity, digital identity, and IoT solutions platform. It operates as a Swiss-based holding company through several operational subsidiaries, each dedicated to specific aspects of its technology portfolio. The subsidiaries include (i) SEALSQ Corp (Nasdaq: LAES), which focuses on semiconductors, PKI, and post-quantum technology products, (ii) WISeKey SA which specializes in RoT and PKI solutions for secure authentication and identification in IoT, Blockchain, and AI, (iii) WISeSat which focuses on space technology for secure satellite communication, specifically for IoT applications, (iv) WISe.ART Corp which focuses on trusted blockchain NFTs and operates the WISe.ART marketplace for secure NFT transactions, and (v) SEALCOIN AG which focuses on decentralized physical internet with DePIN technology and houses the development of the SEALCOIN platform.
Each subsidiary contributes to WISeKey’s mission of securing the internet while focusing on their respective areas of research and expertise. Their technologies seamlessly integrate into the comprehensive WISeKey platform. WISeKey secures digital identity ecosystems for individuals and objects using Blockchain, AI, and IoT technologies. With over 1.6 billion microchips deployed across various IoT sectors, WISeKey plays a vital role in securing the Internet of Everything. The company’s semiconductors generate valuable Big Data that, when analyzed with AI, enable predictive equipment failure prevention. Trusted by the OISTE/WISeKey cryptographic Root of Trust, WISeKey provides secure authentication and identification for IoT, Blockchain, and AI applications. The WISeKey Root of Trust ensures the integrity of online transactions between objects and people. For more information on WISeKey’s strategic direction and its subsidiary companies, please visit www.wisekey.com.
About Columbus Acquisition Corp
Columbus Acquisition Corp. is a blank check company, also commonly referred to as a special purpose acquisition company (SPAC) formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization, or similar business combination with one or more businesses or entities. CAC is led by Fen “Eric” Zhang, Chairman and Chief Executive Officer, and Jie “Janet” Hu, Chief Financial Officer, who are growth-oriented executives with a long track record of value creation across industries.
Forward-Looking Statements
This communication contains forward-looking statements within the meaning of applicable securities laws, including statements regarding the proposed business combination, the SEC review process, any effectiveness of the Registration Statement and the anticipated completion of the proposed business combination. Forward-looking statements are subject to risks, uncertainties and assumptions, many of which are outside the control of Pubco, CAC, WISeSat and WISeKey International Holding Ltd. Actual results may differ materially from those expressed or implied by these forward-looking statements as a result of a variety of factors, including the risk that the proposed business combination may not be completed in a timely manner or at all, the risk that the Registration Statement may not become effective, the risk that CAC shareholder approval may not be obtained, the risk that other closing conditions may not be satisfied or waived, and other risks and uncertainties described in CAC’s filings with the SEC and to be described in the Registration Statement when publicly filed. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date made. The parties undertake no obligation to update or revise any forward-looking statements except as required by applicable law.
WISeKey/WISeSat Investor Contact:
Carlos Moreira
Chairman & CEO
Tel: +41 22 594 3000
info@wisekey.com
WISeKey/WISeSat Media Contact:
The Equity Group Inc.
Lena Cati
Tel: +1 212 836-9611
lena.cati@theequitygroup.com
