Exhibit 99.1 BOYD GAMING REPORTS FIRST-QUARTER 2025 RESULTS LAS VEGAS - APRIL 24, 2025 - Boyd Gaming Corporation (NYSE: BYD) today reported financial results for the first quarter ended March 31, 2025. Keith Smith, President and Chief Executive Officer of Boyd Gaming, said: "During the first quarter, we achieved revenue and Adjusted EBITDAR growth on both a Companywide and property-level basis, maintaining property operating margins of 40% – an impressive performance by our Company, considering the impact o ...