# EDGAR Filing Document

**Accession Number:** 0001951222
**File Stem:** 0001104659-26-039143
**Filing Date:** 2026-4
**Character Count:** 2911
**Document Hash:** 3edd2aa8116e5d86131a4da8769fa34f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-039143.hdr.sgml**: 20260402

**ACCESSION NUMBER**: 0001104659-26-039143

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260402

**FILED AS OF DATE**: 20260402

**DATE AS OF CHANGE**: 20260402

**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:** 26833281

**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

**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 April 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)**

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**British Virgin Islands** | &nbsp;&nbsp;**Avenue Louis-Casaï 58 <br> 1216 Cointrin, Switzerland** | &nbsp;&nbsp;**Not Applicable** |
| &nbsp;&nbsp;(State or other jurisdiction of incorporation or<br> organization) | &nbsp;&nbsp;(Address of principal executive office) | &nbsp;&nbsp;(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 |  |
| <u>No.</u> | <u>Description</u> |
| [99.1](tm2610931d1_ex99-1.pdf) | [2025 Annual Report of SEALSQ Corp](tm2610931d1_ex99-1.pdf) |

---

**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: April 2, 2026 | **SEALSQ CORP** | **SEALSQ CORP** | **SEALSQ CORP** |
|  | By: | /s/ Carlos Moreira | /s/ Carlos Moreira |
|  |  | Name: | Carlos Moreira |
|  |  | Title: | Chief Executive Officer |
|  | By: | /s/ John O'Hara | /s/ John O'Hara |
|  |  | Name: | John O'Hara |
|  |  | Title: | Chief Financial Officer |

---

### Attached PDF Documents

**Attachment 1:** `tm2610931d1_ex99-1.pdf`

_No text found in this document._