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Form 4 Wisekey International For: Jun 08 Filed by: Feuardent Moreira Andreas

June 16, 2026 4:15 PM
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person *
Feuardent Moreira Andreas
(Last) (First) (Middle)
C/O WISEKEY INTERNATIONAL HOLDING S.A.
AVENUE LOUIS-CASAI 58
(Street)
COINTRIN 1216
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Wisekey International Holding S.A. [ WKEY ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Innovation Officer
3. Date of Earliest Transaction (Month/Day/Year)
06/08/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Class B Shares 06/08/2026 M 440 A $ 3.14 (1) 440 I By wife
Class B Shares 06/08/2026 F 139 D $ 10.51 (2) 301 I By wife
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option Plan (right to buy) (3) $ 3.14 (1) 06/08/2026 M 440 09/27/2019 09/26/2026 Class B Shares 440 $ 0 0 I By wife
Explanation of Responses:
1. The exercise price of CHF 2.50 per share has been converted to U.S. dollars using the noon buying rate for the Swiss franc as published by the Federal Reserve Board in its H.10 weekly release. The exchange rate used was 0.7955 Swiss francs per U.S. dollar, as reported on June 5, 2026, which is the most recent rate published by the Federal Reserve prior to the transaction date of June 8, 2026. Based on this rate, the exercise price is approximately $3.14 per share.
2. The exercise price of CHF 8.36 per share has been converted to U.S. dollars using the noon buying rate for the Swiss franc as published by the Federal Reserve Board in its H.10 weekly release. The exchange rate used was 0.7955 Swiss francs per U.S. dollar, as reported on June 5, 2026, which is the most recent rate published by the Federal Reserve prior to the transaction date of June 8, 2026. Based on this rate, the exercise price is approximately $10.51 per share.
3. The accompanying tax-offset right, which was granted in tandem with the option, entitles the reporting person to receive, upon exercise of the option, a cash payment equal to the tax withholding incurred in connection with the exercise, including tax withholding incurred on the tax-offset payment.
/s/ John O'Hara, Attorney-in-Fact 06/16/2026
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

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