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Table of Contents ( Mark One ) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 Form 20 - F □ REGISTRATION STATEMENT PURSUANT TO SECTION 12 ( b ) OR 12 ( 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 001-37922 For the transition period from to ZTO Express ( Cayman ) Inc. ( Exact name of Registrant as specified in its charter ) N / A ( Translation of Registrant's name into English ) Cayman Islands ( Jurisdiction of incorporation or organization ) Building One , No. 1685 Huazhi Road , Qingpu District , Shanghai , 201708 People's Republic of China ( Address of principal executive offices ) Huiping Yan , Chief Financial Officer Building One , No. 1685 Huazhi Road , Qingpu District , Shanghai , 201708 People's Republic of China Phone : ( 86 21 ) 5980 4508 Email : hp.yan@zto.com ( Name , Telephone , Email and / or Facsimile number and Address of Company Contact Person ) Title of each class Securities registered or to be registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) American depositary shares , each representing one Class A ordinary share par value US $ 0.0001 per share ZTO Name of Each Exchange on Which Registered New York Stock Exchange Class A ordinary shares , par value US $ 0.0001 per share Securities registered or to be registered pursuant to Section 12 ( g ) of the Act 2057 None ( Title of Class ) Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act : The Stock Exchange of Hong Kong Limited