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 September 2026
Commission File Number: 001-41709
SEALSQ CORP
(Exact
Name of Registrant as Specified in Charter)
N/A
(Translation of Registrant’s
name into English)
| British Virgin Islands |
|
Avenue Louis-Casaï 58
1216 Cointrin, 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
SEALSQ Corp. (the “Company”) is providing
the following update on its post-quantum semiconductor certification timelines. In light of certain regulatory and technical developments,
the Company has revised certain milestones as follows:
QS7001 Post-Quantum Secure Element
| |
● | QS7001 V1: The Company now targets to receive the Hardware Common Criteria Evaluation Test Report from the laboratory in October 2026. |
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● | QS7001 V2: The Company now targets to receive the Hardware Common Criteria Evaluation full PQC Test Report from the laboratory in
January 2027. |
QVault Trusted Platform Module
| ● | QVault TPM-183: The Company targets the TCG certification in February 2027. |
| ● | QVault TPM-185: The Company targets the TCG certification in May 2027. |
All product versions are available as engineering samples.
Forward-Looking Statements
This Report on Form 6-K contains forward-looking
statements within the meaning of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended. Forward-looking
statements include statements regarding the Company’s post-quantum semiconductor certification timelines, targeted timing for receipt
of Hardware Common Criteria Evaluation Test Reports for the QS7001 product line, targeted timing for TCG certifications for the QVault
TPM product line, availability of engineering samples, and any other statements that are not historical facts.
These statements are based on management’s
current expectations and are subject to risks and uncertainties that could cause actual results to differ materially from those expressed
or implied, including: the timing and success of product certifications, including the ability to meet revised certification milestones
for Common Criteria evaluations and TCG certifications and any further delays or changes in certification requirements or testing protocols;
regulatory developments affecting certification processes; the development and market acceptance of post-quantum security technologies;
market demand and semiconductor industry conditions; the Company’s ability to continue beneficial transactions with material parties,
including a limited number of significant customers; and the risks discussed in the Company’s filings with the U.S. Securities and
Exchange Commission.
The Company does not undertake any obligation
to update any forward-looking statements contained herein as a result of new information, future events, or otherwise.
The information contained in this Report on Form 6-K is hereby
incorporated by reference into the registration statement on Form F-3 of the Company (File No. 333-290963), as amended, and the registration
statement on Form S-8 of the Company (File No. 333-287139), and into the base prospectus and any prospectus supplement outstanding
under each of the foregoing registration statements, to the extent not superseded by documents or reports subsequently filed or furnished
by the Company under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.
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: September 25, 2026 |
SEALSQ CORP |
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|
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By: |
/s/ Carlos Moreira |
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Name: |
Carlos Moreira |
|
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Title: |
Chief Executive Officer |
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By: |
/s/ John O’Hara |
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|
Name: |
John O’Hara |
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Title: |
Chief Financial Officer |
