WISeKey completes move to British Virgin Islands

WISeQey reports that over 1.6 billion microchips have been deployed across various IoT sectors.

Rhea-AI Filing Summary

Wisekey International Holding S.A. (WKEY) reported that the redomiciliation of WISeKey International Holding Ltd. from Switzerland to the British Virgin Islands became legally effective on October 1, 2026. It was implemented through a cross-border merger into WISeQey Corp., its wholly owned British Virgin Islands subsidiary, which survived.

Existing WISeKey ADSs and Class B shares continue trading through the close of business on October 2, 2026. WISeQey ordinary shares are expected to begin trading under WQEY at market open on October 5, 2026, on the Nasdaq Global Market and the SIX Swiss Exchange. Each ADS will be exchanged for one-half of one WISeQey ordinary share. Each Class B share will be exchanged for one ordinary share unless the holder elected unlisted WISeQey Class B shares, in which case it will be exchanged for ten WISeQey Class B shares.

Filing Explained

Although the merger legally took effect on October 1, 2026, the release describes the exchange of old securities for WISeQey shares as still to be completed and the October 5 listing as expected; the legal redomiciliation did not itself mean holders already had the successor securities or that trading had begun.

Key Figures

ADS exchange ratio: One-half of one WISeQey ordinary share per WISeKey ADS Class B exchange ratio: One WISeQey ordinary share per WISeKey Class B share Elected unlisted Class B exchange ratio: Ten WISeQey Class B shares per WISeKey Class B share +3 more

6 metrics

ADS exchange ratio One-half of one WISeQey ordinary share per WISeKey ADS Exchange in connection with the redomiciliation

Class B exchange ratio One WISeQey ordinary share per WISeKey Class B share Applies unless the holder elected unlisted WISeQey Class B shares

Elected unlisted Class B exchange ratio Ten WISeQey Class B shares per WISeKey Class B share For holders who elected to receive unlisted WISeQey Class B shares

Last stated trading date for existing securities October 2, 2026 Existing WISeKey ADSs and Class B shares trade through close of business

Expected start of trading for WISeQey ordinary shares October 5, 2026 Expected at market open under ticker WQEY

Microchips deployed Over 1.6 billion microchips Across various IoT sectors

Key Terms

Redomiciliation, cross-border merger, American Depositary Shares, primary listing

4 terms

Redomiciliation regulatory

"the Redomiciliation was implemented through a cross-border merger"

Redomiciliation is when a company legally changes its country of incorporation while keeping the same business and assets, like moving a house to a new neighborhood but keeping the same furniture. Investors care because the company then follows a different set of laws and tax rules, which can change shareholder rights, reporting standards, dividend treatment and the ease of trading the stock, potentially affecting risk and return.

cross-border merger regulatory

"through a cross-border merger of WISeKey with and into WISeQey"

A cross-border merger is when two companies based in different countries combine into a single business. Think of it as two households from different neighborhoods merging their kitchens: it can create access to new customers, technologies or cost savings, but also brings extra rules, taxes, currency swings and cultural differences that can affect profits and risk. Investors watch these deals closely because they can change a company’s growth prospects, costs and regulatory exposure.

American Depositary Shares financial

"The existing American Depositary Shares of WISeKey"

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

primary listing financial

"where they will have a primary listing"

The primary listing is the main stock exchange where a company’s shares are officially registered and traded, and whose rules and regulators oversee its disclosures and corporate governance. For investors it matters because the primary listing determines the market’s trading hours and currency, the regulatory protections and reporting standards that apply, and where most trading volume and official filings are found—think of it as the stock’s legal “home address.”

FAQ

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

What exchange ratio applies to WKEY ADSs and Class B shares?

Each WISeKey ADS will be exchanged for one-half of one WISeQey ordinary share. Each WISeKey Class B share will be exchanged for one WISeQey ordinary share unless its holder elected unlisted WISeQey Class B shares, in which case it will be exchanged for ten WISeQey Class B shares.

When are WISeQey shares expected to begin trading?

WISeQey ordinary shares are expected to begin trading under WQEY at market open on October 5, 2026, on the Nasdaq Global Market and the SIX Swiss Exchange, where the shares will have a primary listing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/02/2026 - 06:03 AM Accepted by SEC EDGAR 10/01/2026 - 07:56 PM 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 October 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 WISeQey Corp. issued on October 1, 2026

1 

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: October 2, 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

2 

Exhibit 99.1 

WISeKey’s Redomiciliation from Switzerland to the British Virgin Islands Becomes Legally Effective

Zug, Switzerland, October 1, 2026 – WISeQey Corp. (formerly known as WISeKey International Corp., “WISeQey” or the “Company”) (SIX: WIHN; NASDAQ: WKEY), a leading global quantum cybersecurity and space IoT company, today announced that the previously announced redomiciliation of WISeKey International Holding Ltd (“WISeKey”) from Switzerland to the British Virgin Islands became legally effective today (the “Redomiciliation”). The Redomiciliation was implemented through a cross-border merger of WISeKey with and into WISeQey, its wholly owned British Virgin Islands subsidiary, with WISeQey as the surviving company (the “Merger”).

The existing American Depositary Shares of WISeKey will continue to trade on Nasdaq, and the existing Class B shares of WISeKey will continue to trade on the SIX Swiss Exchange, in each case through the close of business on Friday, October 2, 2026. The ordinary shares of WISeQey are expected to commence trading under the ticker symbol “WQEY” on both the Nasdaq Global Market and the SIX Swiss Exchange (where they will have a primary listing) at market open on Monday, October 5, 2026.

Following cancellation of the existing WISeKey equity securities, holders of WISeKey equity securities will receive the applicable equity securities of WISeQey in accordance with the exchange ratios, elections, and settlement procedures previously communicated to shareholders and described in the prospectus relating to the Merger.

In connection with the completion of the Redomiciliation, (i) each WISeKey ADS will be exchanged for one-half of one WISeQey ordinary share, (ii) each WISeKey Class B share will be exchanged for one WISeQey ordinary share (unless such holder elected to receive WISeQey Class B shares), and (iii) each WISeKey Class B share held by a holder that elected to receive unlisted WISeQey Class B shares will be exchanged for ten WISeQey Class B shares.

About WISeQey

WISeQey Corp. (“WISeQey”), is a British Virgin Islands holding company focused on post quantum cybersecurity, digital identity, space technology and the Internet of Things (IoT). Its operating subsidiaries and technology platforms address distinct parts of this portfolio:

1. SEALSQ Corp (Nasdaq: LAES) develops secure semiconductors, public key infrastructure (PKI) and post-quantum security products.

2. WISeSat AG develops space technology and secure satellite communications, particularly for IoT applications.

3. WISeID provides digital identity, authentication, secure access and digital signing for individuals, enterprises and connected devices.

4. WISe.ART Corp operates the WISe.ART marketplace, which uses blockchain technology to support trusted digital asset and NFT transactions.

5. SEALCOIN AG develops decentralized physical infrastructure network (DePIN) technology and the SEALCOIN platform.

Each subsidiary contributes to WISeQey’s mission of securing the internet while focusing on their respective areas of research and expertise. Their technologies seamlessly integrate into the comprehensive WISeQey platform. WISeQey 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, WISeQey plays a vital role in securing the Internet of Everything. Trusted by the OISTE/WISeKey cryptographic Root of Trust, WISeQey provides secure authentication and identification for IoT, blockchain, and AI applications. The WISeQey Root of Trust ensures the integrity of online transactions between objects and people. For more information on WISeQey’s strategic direction and its subsidiary companies, please visit www.wisekey.com.

Forward-Looking Statements

This communication contains forward-looking statements concerning WISeKey International Holding Ltd, WISeQey Corp. and/or their respective subsidiaries (collectively, “WISeKey,” “WISeQey,” “our” or “us”) and their businesses. Forward-looking statements can be identified by terms such as “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “plan,” “project,” “will,” and similar expressions. These statements involve known and unknown risks, uncertainties and other factors that could cause WISeKey’s or WISeQey’s actual results, financial condition, performance or achievements to differ materially from any future results, performance or achievements expressed or implied by such forward-looking statements. These factors include: the expected timing of the commencement of trading of WISeQey ordinary shares on the Nasdaq Global Market and the SIX Swiss Exchange; the completion of the exchange of WISeKey equity securities for WISeQey equity securities; the ability of WISeQey to realize the anticipated benefits of the Redomiciliation; and the risks discussed in WISeKey’s and WISeQey’s filings with the SEC. WISeKey and WISeQey are providing this communication as of this date and do not undertake to update any forward-looking statements 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. Given the risks and uncertainties described herein, you should not place undue reliance on forward-looking statements as a prediction of actual results.

Press and Investor Contacts

WISeQey Corp.
Company Contact:
Carlos Moreira
Chairman & CEO
Tel: +41 22 594 3000
info@wisekey.com WISeQey Investor Relations (US) 
The Equity Group Inc.
Lena Cati
Tel: +1 212 836-9611
lena.cati@theequitygroup.com  

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 PRESS RELEASE OF WISEQEY CORP. ISSUED ON OCTOBER 1, 2026 13.1 KB