X0306 4 2021-05-05 0000789570 MGM Resorts International MGM 0001574607 GROUNDS WILLIAM WARWICK 3600 LAS VEGAS BLVD. SOUTH LAS VEGAS NV 89109 1 Common Stock $.01 Par Value ND 2021-05-05 4 M 0 10050 0 A 22346 D Restricted Stock Units 2021-05-05 4 M 0 10050 0 D 2021-05-05 Common Stock $.01 Par Value ND 10050 0 D Restricted Stock Units 2021-05-06 4 A 0 4498 0 A Common Stock $.01 Par Value ND 4498 4498 D Restricted Stock Units ("RSUs") granted under the Company's Amended and Restated 2005 Omnibus Incentive Plan (the "Plan"). Each RSU represents the right to receive, following vesting, one share of Company common stock. Any fractional shares are paid in cash upon settlement. The RSUs vested on May 5, 2021 subject to the terms of the Plan and applicable award agreement. The RSUs will vest upon the earlier of (i) May 6, 2022 or (ii) the date of the Company's next annual meeting of stockholders, in each case subject to the terms of the Plan and applicable award agreement. /s/ Jessica Cunningham, Attorney-In-Fact 2021-05-07