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( Mark One ) X 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 For the transition period from to OR SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requiring this shell company report Commission file number : 001-38673 Arco Platform Limited ( Exact name of Registrant as specified in its charter ) Not applicable ( Translation of Registrant's name into English ) Cayman Islands ( Jurisdiction of incorporation or organization ) Rua Augusta 2840 , 9th floor , suite 91 Consolação , São Paulo - SP 01412-100 , Brazil +55 ( 11 ) 3047-2699 ( Address of principal executive offices ) Alexandre Nakamaru , Chief Financial Officer Rua Augusta 2840 , 9th floor , suite 91 Consolação , São Paulo - SP 01412-100 , Brazil +55 ( 11 ) 3047-2699 ( Name , Telephone , E - mail and / or Facsimile number and Address of Company Contact Person ) Copies to : Manuel Garciadiaz Davis Polk & Wardwell LLP 450 Lexington Avenue New York , NY 10017 Phone : ( 212 ) 450-4000 Fax : ( 212 ) 450-6858 Securities registered or to be registered pursuant to Section 12 ( b ) of the Act : Title of each class Trading Symbol ( s ) Class A common shares , par value US $ 0.00005 per share ARCE Name of each exchange on which registered The NASDAQ Global Select Market Securities registered or to be registered pursuant to Section 12 ( g ) of the Act : None Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act : None