MGM: Material agreement · Company disclosure

Item 1.01 Entry into a Material Definitive Agreement. On October 27, 2026, MGM Resorts International, a Delaware corporation (the “ Company ”), entered into an amendment (the “ Amendment ”) to the Voting Agreement (the “ Voting Agreement ”), dated April 3, 2026, with People Incorporated (formerly known as IAC Inc.), a Delaware corporation (“ People ”), and Barry Diller. Except as expressly modified by the Amendment, the terms and conditions of the Voting Agreement, including the termination provisions thereof, remain unchanged and in full force and effect. The following is a summary of the material terms of the Amendment. This summary does not purport to be complete and is qualified in its entirety by reference to the Amendment, a copy of which is attached as Exhibit 10.1 hereto and is incorporated herein by reference. Pursuant to the Amendment, People, Mr. Diller and their respective controlled affiliates (collectively, the “Covered Entities”) agreed not to acquire securities of the Company (or related derivative instruments) if doing so would cause their aggregate beneficial ownership to exceed 29.9% of the Company’s outstanding common stock, except that an increase above that threshold resulting from the Company’s own repurchases, redemptions or other acquisitions of its securities will not constitute a breach, so long as the Covered Entities make no further acquisitions while above 29.9%. Additionally, at any time a matter, other than a change of control transaction, is brought to a stockholder vote or consent of the Company’s stockholders, the Covered Entities will vote any voting securities they beneficially own in excess of 25.73% of the total voting power of the outstanding voting securities of the Company on each matter in the same manner as the majority of the