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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , DC 20549 REGISTRATION STATEMENT PURSUANT TO SECTION 12 ( b ) OR 12 ( g ) OF THE SECURITIES EXCHANGE ACT OF 1934 FORM 20 - F OR ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Title of class None For the fiscal year ended December 31 , 2020 OR For the transition period from to SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR Yes Date of event requiring this shell company report : Commission file number : 333-224459 SEADRILL LIMITED ( Exact name of Registrant as specified in its charter ) Par - la - Ville Place , 4th Floor , 14 Par - la - Ville Road , Hamilton HM 08 , Bermuda ( Address of principal executive offices ) Bermuda ( Jurisdiction of incorporation or organization ) Colleen Simmons Par - la - Ville Place , 4th Floor , 14 Par - la - Ville Road , Hamilton HM 08 , Bermuda Tel : +1 ( 441 ) 295-9500 , Fax : +1 ( 441 ) 295-3494 ( 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 : Trading Symbol None Name of exchange on which registered None 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 : Common shares $ 0.10 par value Indicate the number of outstanding shares of each of the issuer's classes of capital or common stock as of the close of the period covered by the annual report : As at December 31 , 2020 , there were 100,384,435 common shares , par value $ 0.10 per share , of the Registrant's common shares issued and outstanding . Indicate by check mark if the Registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . No