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 August 2026
Commission File Number: 001-39115
WISEKEY INTERNATIONAL HOLDING AG
(Exact Name of Registrant as Specified in Charter)
N/A
(Translation of Registrant’s name into English)
| Canton of Zug, Switzerland | General-Guisan-Strasse 6 CH-6399 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 | SEALSQ Corp’s CEO Letter to Shareholders issued on August 13, 2026 |
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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: August 14th, 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 | ||
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