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 ~~June~~July 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 WISeKey International Holdings AG issued on June 2530, 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: June 30, 2026	wisekey international holding ag
Date: July 2, 2026	wisekey international holding ag
	By:	/s/ Carlos Moreira
	Name:	~~Name:~~Carlos Moreira	~~Carlos Moreira~~
	Title:	~~Title:~~Chief Executive Officer	~~Chief Executive Officer~~
	By:	/s/ John O'’Hara
	Name:	~~Name:~~John O’Hara	~~John O’Hara~~
	Title:	~~Title:~~Chief Financial Officer	~~Chief Financial Officer~~

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