# EDGAR Filing Document

**Accession Number:** 0001951222
**File Stem:** 0001193805-25-001372
**Filing Date:** 2025-9
**Character Count:** 10002
**Document Hash:** 2f55c03246f14b44d03cd22308d21cbe
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193805-25-001372.hdr.sgml**: 20250926

**ACCESSION NUMBER**: 0001193805-25-001372

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20250926

**FILED AS OF DATE**: 20250926

**DATE AS OF CHANGE**: 20250926

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SEALSQ Corp
- **CENTRAL INDEX KEY:** 0001951222
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** D8
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41709
- **FILM NUMBER:** 251348342

**BUSINESS ADDRESS:**
- **STREET 1:** AVENUE LOUIS-CASAI 58
- **CITY:** COINTRIN
- **STATE:** V8
- **ZIP:** 1216
- **BUSINESS PHONE:** 212-336-2039

**MAIL ADDRESS:**
- **STREET 1:** CRAIGMUIR CHAMBERS, ROAD TOWN
- **CITY:** TORTOLA
- **STATE:** D8
- **ZIP:** VG 1110

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SEAL (BVI) Corp.
- **DATE OF NAME CHANGE:** 20221019

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**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, DC 20549**

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**FORM 6-K**

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**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 2025**

**Commission File Number: 001-41709**

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**SEALSQ CORP**

**(Exact Name of Registrant as Specified in Charter)**

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**N/A**

**(Translation of Registrant's name into English)**

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| | | |
|:---|:---|:---|
| **British Virgin Islands** | **Avenue Louis-Casaï 58**<br> **1216 Cointrin, Switzerland**  | **Not Applicable** |
| (State or other jurisdiction of incorporation or organization) | (Address of principal executive office) | (I.R.S. Employer Identification No.) |

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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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ☐ Form 40-F

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The information contained in Exhibit 99.1 to this Report on Form 6-K, except for the first paragraph of the press release (including the hyperlink), is hereby incorporated by reference into the registration statement on Form F-3 of the Company (File No. 333-286098), 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.

<u>Exhibit Index</u>

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| | |
|:---|:---|
| Exhibit |  |
| <u>No.</u> | <u>Description</u> |
| 99.1 | [Press Release dated September 26, 2025](e664865_ex99-1.htm) |

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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.

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| | | |
|:---|:---|:---|
| Date: September 26, 2025 | **SEALSQ CORP** | **SEALSQ CORP** |
|  | 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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## Exhibit 99.1

**SEALSQ Announces Deal With Quantix Edge Security to Develop Spain's First Post-Quantum Semiconductor Personalization Center Worth $25M in Expected Revenue**

The Spanish Government recently announced a €19.6 million public investment in Quantix, which is projected to generate €793 million of economic impact in the Region of Murcia over the next five years <u>https://digital.gob.es/comunicacion/notas-prensa/secretaria-digitalizacion-e-inteligencia-artificial/2025/09/2025-09-25</u> ****

<br> **![](image_002.jpg)** 

<br> **SEALSQ Announces Deal With Quantix Edge Security to Develop Spain's First Post-Quantum Semiconductor Personalization Center Worth $25M in Expected Revenue**

Geneva, Switzerland, September 26, 2025 – SEALSQ Corp (NASDAQ: LAES) ("SEALSQ" or "the Company"), a leader in semiconductors, PKI, and post-quantum technology hardware and software, today announced a definitive agreement with Quantix Edge Security to develop and deploy Spain's first post-quantum semiconductor personalization center in the Region of Murcia.

This agreement, a key milestone in the Quantix Edge Security project previously announced by the Company in June 2024, is expected to generate $25 million of revenue over the next three years with recognition likely to be milestone based over the course of the project. The Company anticipates that the project will start in H1 2026 and further expects that the project milestones will occur regularly over the life of the project creating a relatively even spread of revenue recognition..

This development is aligned with the Spanish Government's national strategy to strengthen sovereignty in critical sectors such as semiconductors and cybersecurity. In September 2025, the Government announced a €19.6 million public investment in Quantix, projected to deliver €793 million in economic impact to the Region of Murcia over the next five years. The new center will reinforce Spain's role as a European hub for post-quantum and cybersecurity-focused semiconductor innovation.

SEALSQ also plans to accelerate commercialization by distributing its post-quantum semiconductors through Quantix Edge Security beginning in 2026, even while the Murcia facility remains under construction. This strategy will enable early adoption of SEALSQ's quantum-resistant technologies and supports the Company's $170 million pipeline of potential revenue as part of its broader Quantum Roadmap.

In parallel, SEALSQ is preparing to launch the Quantum Shield "QS7001" in mid-November 2025, the world's first<sup>1</sup> secure chip to embed NIST-standardized quantum-resistant algorithms ML-KEM (CRYSTALS-Kyber) and ML-DSA (CRYSTALS-Dilithium) at the hardware level. The QS7001 will provide robust protection for critical applications including cryptocurrency and blockchain infrastructures, defense and aerospace systems, healthcare platforms, and Internet of Things (IoT) ecosystems.

The QS7001 delivers secure key storage, post-quantum signing, and hybrid migration frameworks that enable seamless transitions from RSA/ECC to quantum-safe cryptography, along with an open hardware platform that supports personalized firmware. The product also paves the way for SEALSQ's upcoming QVault TPM, a Trusted Platform Module scheduled for release in the first half of 2026.

**About SEALSQ:**

SEALSQ is a leading innovator in Post-Quantum Technology hardware and software solutions. Our technology seamlessly integrates Semiconductors, PKI (Public Key Infrastructure), and Provisioning Services, with a strategic emphasis on developing state-of-the-art Quantum Resistant Cryptography and Semiconductors designed to address the urgent security challenges posed by quantum computing. As quantum computers advance, traditional cryptographic methods like RSA and Elliptic Curve Cryptography (ECC) are increasingly vulnerable.

SEALSQ is pioneering the development of Post-Quantum Semiconductors that provide robust, future-proof protection for sensitive data across a wide range of applications, including Multi-Factor Authentication tokens, Smart Energy, Medical and Healthcare Systems, Defense, IT Network Infrastructure, Automotive, and Industrial Automation and Control Systems. By embedding Post-Quantum Cryptography into our semiconductor solutions, SEALSQ ensures that organizations stay protected against quantum threats. Our products are engineered to safeguard critical systems, enhancing resilience and security across diverse industries.

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<sup>1</sup> As of available market information on the date of this release

For more information on our Post-Quantum Semiconductors and security solutions, please visit www.sealsq.com.

**Forward-Looking Statements**

This communication expressly or implicitly contains certain forward-looking statements concerning SEALSQ Corp and its businesses. Forward-looking statements include statements regarding our business strategy, financial performance, results of operations, market data, events or developments that we expect or anticipate will occur in the future, as well as any other statements which are not historical facts. Although we believe that the expectations reflected in such forward-looking statements are reasonable, no assurance can be given that such expectations will prove to have been correct. These statements involve known and unknown risks and are based upon a number of assumptions and estimates which are inherently subject to significant uncertainties and contingencies, many of which are beyond our control. Actual results may differ materially from those expressed or implied by such forward-looking statements. Important factors that, in our view, could cause actual results to differ materially from those discussed in the forward-looking statements include SEALSQ's ability to continue beneficial transactions with material parties, including a limited number of significant customers; market demand and semiconductor industry conditions; and the risks discussed in SEALSQ's filings with the SEC. Risks and uncertainties are further described in reports filed by SEALSQ with the SEC.

SEALSQ Corp is providing this communication as of this date and does not undertake to update any forward-looking statements contained herein as a result of new information, future events or otherwise.

SEALSQ Corp.<br> Carlos Moreira<br> Chairman & CEO<br> Tel: +41 22 594 3000<br> info@sealsq.com SEALSQ Investor Relations (US)<br> The Equity Group Inc.<br> Lena Cati<br> Tel: +1 212 836-9611 lcati@equityny.com