Page 1

Table of Contents ☐ 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 ☐ OR SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number : 001-38262 LOMA NEGRA COMPAÑÍA INDUSTRIAL ARGENTINA SOCIEDAD ANÓNIMA ( Exact name of Registrant as specified in its charter ) LOMA NEGRA CORPORATION ( Translation of Registrant's name into English ) Republic of Argentina ( Jurisdiction of incorporation or organization ) * Loma Negra C.I.A.S.A. Cecilia Grierson 355 , 4th Floor Zip Code C1107CPG - Ciudad Autónoma de Buenos Aires Argentina ( Address of principal executive offices ) Marcos Isabelino Gradin Cecilia Grierson 355 , 4th Floor Zip Code C1107CPG - Ciudad Autónoma de Buenos Aires Argentina Tel : 54-11-4319-3048 Email : mgradin@lomanegra.com ( 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 5 Ordinary Shares of Loma Negra C.I.A.S.A. Ordinary Shares of Loma Negra C.I.A.S.A. Trading Symbol ( s ) LOMA LOMA Name of each exchange on which registered New York Stock Exchange New York Stock Exchange * Not for trading , but only in connection with the registration of American Depositary Shares pursuant to the requirements of the New York Stock Exchange . 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