SEALSQ, Quobly end majority deal talks, eye minority stake

WISeKey International Holding furnished a Form 6-K that includes a press release from its affiliate SEALSQ Corp about deal discussions with Quobly.

Rhea-AI Filing Summary

WISeKey International Holding furnished a Form 6-K that includes a press release from its affiliate SEALSQ Corp about deal discussions with Quobly. SEALSQ and Quobly have mutually agreed to stop talks on a potential majority investment or acquisition of Quobly by SEALSQ.

The parties now plan to consider a possible minority investment, to be discussed when Quobly begins its Series A financing round. Although ownership talks have shifted, SEALSQ and Quobly will continue their previously announced technical and industrial collaboration focused on combining secure semiconductor technologies with scalable quantum computing architectures.

Insights

Cross-border M&A and strategic partnerships analyst

Majority deal talks end; collaboration and possible minority stake remain.

SEALSQ and Quobly have ended discussions about a majority investment or acquisition of Quobly by SEALSQ. Instead, they intend to explore a minority investment structure aligned with Quobly’s planned Series A round and the current pace of quantum computing investments in France.

The change removes the prospect of near-term control or consolidation but keeps strategic alignment through an ongoing technical and industrial collaboration on secure semiconductors and scalable quantum architectures. Any minority stake would depend on terms discussed when Quobly launches its Series A financing.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did WISeKey (WKEY) disclose about SEALSQ and Quobly in this Form 6-K?

WISeKey furnished a Form 6-K containing a SEALSQ press release. It explains SEALSQ and Quobly mutually ended discussions on a potential majority investment or acquisition, while planning to explore a minority investment and continuing their technical and industrial collaboration.

Are SEALSQ and Quobly still pursuing a majority acquisition deal?

No, SEALSQ and Quobly mutually agreed to halt discussions on a potential majority investment or acquisition of Quobly. Instead, they will consider a minority investment structure that better matches current quantum computing investment dynamics in France and Quobly’s fundraising plans.

What type of investment might SEALSQ make in Quobly going forward?

SEALSQ and Quobly intend to explore a potential minority investment. These discussions are expected to take place once Quobly launches its Series A financing round, reflecting both parties’ preference for a structure better suited to current quantum-sector investment conditions in France.

Will SEALSQ and Quobly continue working together after ending majority deal talks?

Yes, SEALSQ and Quobly plan to continue their technical and industrial collaboration. This partnership focuses on combining secure semiconductor technologies with scalable quantum architectures, following a collaboration originally announced in November 2025 and reaffirmed in the current communication.

What business focus of SEALSQ is highlighted alongside the Quobly update?

SEALSQ’s focus on Post-Quantum Technology is highlighted, including semiconductors, PKI, and provisioning services. The company develops quantum-resistant cryptography and semiconductor solutions aimed at protecting sensitive data in sectors like energy, healthcare, defense, IT networks, automotive, and industrial automation.

Does the communication include any forward-looking statements from SEALSQ?

Yes, it contains forward-looking statements about SEALSQ’s strategy, operations, and potential minority investments. SEALSQ notes these statements depend on assumptions and risks, and that actual results may differ materially, referring readers to its SEC filings for detailed risk disclosures.

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Accepted by SEC EDGAR 02/23/2026 - 09:22 AM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 under the

Securities Exchange Act of 1934

For the month of February 2026

Commission File Number: 001-39115

WISEKEY INTERNATIONAL HOLDING AG

(Exact Name of Registrant as Specified in Charter)

WISEKEY INTERNATIONAL HOLDING LTD

(Translation of Registrant’s name into English)

Canton of Zug, Switzerland	General-Guisan-Strasse 6 CH-6300 Zug, Switzerland	Not Applicable
(State or other jurisdiction of incorporation or organization)	(Address of principal executive office)	(I.R.S. Employer Identification No.)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

☒ Form 20-F                     ☐ Form 40-F

Exhibit No.		Description
99.1		Press Release of SEALSQ Corp issued on February 20, 2026

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date:  February 23, 2026	wisekey international holding ag
	By:	/s/ Carlos Moreira
		Name:   Carlos Moreira
		Title:     Chief Executive Officer
	By:	/s/ John O’Hara
		Name:   John O’Hara
		Title:     Chief Financial Officer

SEALSQ and Quobly Mutually Agree to Halt Discussions Regarding a Potential Majority Investment or Acquisition by SEALSQ

Geneva, Switzerland, February 20, 2026 -- SEALSQ Corp (NASDAQ: LAES) ("SEALSQ" or "Company"), a company that focuses on developing and selling Semiconductors, PKI, and Post-Quantum technology hardware and software products, and Quobly, today announced that they have mutually agreed to halt discussions regarding a potential majority investment or acquisition of Quobly by SEALSQ.

The parties will instead explore the possibility of a minority investment, to be discussed once Quobly launches its Series A financing round.

This decision reflects a shared preference for a minority investment structure that is more compatible with the current pace of quantum computing investments in France.

The companies will continue their technical and industrial collaboration announced in Nov. 2025 https://www.sealsq.com/investors/news-releases/sealsq-and-quobly-announce-collaboration-to-advance-secure-and-

scalable-quantum-technologies, particularly around the convergence of secure semiconductor technologies and scalable quantum architectures.

About SEALSQ:

SEALSQ is a leading innovator in Post-Quantum Technology hardware and software solutions. Our technology seamlessly integrates Semiconductors, PKI (Public Key Infrastructure), and Provisioning Services, with a strategic emphasis on developing state-of-the-art Quantum Resistant Cryptography and Semiconductors designed to address the urgent security challenges posed by quantum computing. As quantum computers advance, traditional cryptographic methods like RSA and Elliptic Curve Cryptography (ECC) are increasingly vulnerable.

SEALSQ is pioneering the development of Post-Quantum Semiconductors that provide robust, future-proof protection for sensitive data across a wide range of applications, including Multi-Factor Authentication tokens, Smart Energy, Medical and Healthcare Systems, Defense, IT Network Infrastructure, Automotive, and Industrial Automation and Control Systems. By embedding Post-Quantum Cryptography into our semiconductor solutions, SEALSQ ensures that organizations stay protected against quantum threats. Our products are engineered to safeguard critical systems, enhancing resilience and security across diverse industries.

For more information on our Post-Quantum Semiconductors and security solutions, please visit www.sealsq.com.

Forward-Looking Statements

This communication expressly or implicitly contains certain forward-looking statements concerning SEALSQ Corp and its businesses. Forward-looking statements include statements regarding our business strategy, financial performance, results of operations, completion of contemplated minority investments, market data, events or developments that we expect or anticipate will occur in the future, as well as any other statements which are not historical facts. Although we believe that the expectations reflected in such forward-looking statements are reasonable, no assurance can be given that such expectations will prove to have been correct. These statements involve known and unknown risks and are based upon a number of assumptions and estimates which are inherently subject to significant uncertainties and contingencies, many of which are beyond our control. Actual results may differ materially from those expressed or implied by such forward-looking statements. Important factors that, in our view, could cause actual results to differ materially from those discussed in the forward-looking statements include SEALSQ's ability to continue beneficial transactions with material parties, including a limited number of significant customers; market demand and semiconductor industry conditions; and the risks discussed in SEALSQ's filings with the SEC. Risks and uncertainties are further described in reports filed by SEALSQ with the SEC.

SEALSQ Corp 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.

SEALSQ Corp.
Carlos Moreira
Chairman & CEO
Tel: +41 22 594 3000
info@sealsq.com SEALSQ Investor Relations (US)
The Equity Group Inc.
Lena Cati
Tel: +1 212 836-9611 lcati@theequitygroup.com

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 e665175_ex99-1.htm 8.9 KB