X0306 4/A 2018-08-07 2019-03-18 0 0000015615 MASTEC INC MTZ 0000920559 MAS JORGE 800 DOUGLAS ROAD, 12TH FLOOR CORAL GABLES FL 33134 1 0 0 0 Common Stock 2019-03-14 4 A 0 50837 0.00 A 200666 D Common Stock 2018-08-07 4 G 0 648941 0.00 A 648941 I Indirect Common Stock 276000 I Indirect Common Stock 125000 I Indirect Common Stock 9925400 I Indirect This amendment to the reporting person's Form 4, originally filed on March 18, 2019, is filed to report that on August 7, 2018, the Jorge Mas Irrevocable Family Trust dated June 1, 2012 gifted 648,941 shares of common stock of the issuer to the Jorge Mas Irrevocable Family Trust dated August 7, 2018 (the "Jorge Mas Trust"), one of the trustees of which is the reporting person's spouse. Shares held by Jorge Mas Trust. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purpose of Section 16 or for any other purpose. Shares owned by Mas Equity Partners III, LLC, a Delaware limited liability company ("MEP III"), in which Mas Equity Partners, LLC ("MEP") is a member. The sole member of MEP is the reporting person. The reporting person disclaims beneficial ownership of the securities held by MEP III except to the extent of his pecuniary interest therein. Shares owned of record by the Mas Family Foundation, Inc., a Florida not-for-profit corporation (the "Family Foundation"), of which the reporting person is the president. The reporting person disclaims beneficial ownership of all shares owned by the Family Foundation. Shares owned of record by Jorge Mas Holdings I, LLC, a Florida limited liability company, which is controlled by Jorge Mas Holdings, LLC, a Florida limited liability company, of which the reporting person is the sole member. \s\ Albert de Cardenas For: Jorge Mas 2019-11-15