# EDGAR Filing Document

**Accession Number:** 0001091223
**File Stem:** 0001104659-26-047676
**Filing Date:** 2026-4
**Character Count:** 2553
**Document Hash:** 1c7d68bc95cf1da954a73c473ece2f2e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-047676.hdr.sgml**: 20260423

**ACCESSION NUMBER**: 0001104659-26-047676

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260423

**DATE AS OF CHANGE**: 20260423

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MATERIALISE NV
- **CENTRAL INDEX KEY:** 0001091223
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36515
- **FILM NUMBER:** 26888560

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** TECHNOLOGIELAAN 15
- **CITY:** LEVUEN
- **PROVINCE COUNTRY:** C9
- **ZIP:** 3001
- **BUSINESS PHONE:** 32 16 39 66 11

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** TECHNOLOGIELAAN 15
- **CITY:** LEVUEN
- **PROVINCE COUNTRY:** C9
- **ZIP:** 3001

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 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 April 2026**

**Commission File Number: 001-36515**

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**Materialise NV**

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**Technologielaan 15**

**3001 Leuven**

**Belgium**

**(Address of principal executive office)**

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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 ⌧ Form 40-F ◻

On April 23, 2025, Materialise NV published its annual report in accordance with Belgian law for the year ended December 31, 2025, a copy of which is attached hereto as Exhibit 99.1.

**EXHIBIT INDEX**

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| | |
|:---|:---|
| **Exhibit** | **Description** |

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[99.1](tm261057d2_ex99-1.pdf) [Annual Report of Materialise NV for the fiscal year ended 31 December 2025.](tm261057d2_ex99-1.pdf)

**SIGNATURE**

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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| | |
|:---|:---|
| MATERIALISE NV | MATERIALISE NV |
| By: | /s/ Brigitte de Vet-Veithen |
| Name: | Brigitte de Vet-Veithen |
|  | De Vet Management BV |
| Title: | Chief Executive Officer |

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Date: April 23, 2026

### Attached PDF Documents

**Attachment 1:** `tm261057d2_ex99-1.pdf`

_No text found in this document._