X0306 4 2021-07-01 0000789570 MGM Resorts International MGM 0001183302 HORNBUCKLE WILLIAM 3600 LAS VEGAS BLVD., S. LAS VEGAS NV 89109 1 1 CEO AND PRESIDENT Common Stock $.01 Par Value ND 2021-07-01 4 S 0 50000 43.067 D 57884 I In trust Common Stock $.01 Par Value ND 224748 D The sale reported was effected pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.81 to $43.35, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. /s/ Jessica Cunningham, Attorney-In-Fact 2021-07-02