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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 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 October 2026

Commission File Number: 001-36515

Materialise NV

Technologielaan 15

3001 Leuven

Belgium

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual\nreports under cover of Form 20-F or Form 40-F.

Form\n20-F x           Form\n40-F ¨

Attached as Exhibit 99.1 hereto is a copy of a press release regarding\nMaterialise NV’s ADS Buyback Program.

EXHIBIT INDEX

\n \n \n \n \n \n \n \n \n \n \n \n \n

Exhibit		Description

99.1		Press Release dated October\n 26, 2026

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934,\nthe registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

MATERIALISE NV

By:	/s/ Brigitte de Vet-Veithen
Name:	Brigitte de Vet-Veithen

	De Vet Management BV
Title:	Chief Executive Officer

Date: October 26, 2026

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