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Table of Contents ☐ ☑ ☐ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 20 - F REGISTRATION STATEMENT PURSUANT TO SECTION 12 ( b ) OR ( g ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number : 001-36515 MATERIALISE NV ( Exact name of Registrant as specified in its charter ) Not Applicable ( Translation of Registrant's name into English ) Kingdom of Belgium ( Jurisdiction of incorporation or organization ) Technologielaan 15 , 3001 Leuven , Belgium ( Address of principal executive offices ) Peter Leys , telephone +32 ( 16 ) 39 66 11 , facsimile +32 ( 16 ) 39 66 00 , Technologielaan 15 , 3001 Leuven , Belgium ( Name , Telephone , E - mail and / or Facsimile number and Address of Company Contact Person ) Securities registered or to be registered pursuant to Section 12 ( b ) of the Act : Title of each class American Depositary Shares , each representing one Ordinary Share , no nominal value per share Ordinary Shares , no nominal value per share * Name of each exchange on which registered The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC