Exhibit 99.1 SPHERE ENTERTAINMENT CO. REPORTS FIRST QUARTER 2025 RESULTS NEW YORK, N.Y., May 8, 2025 - Sphere Entertainment Co. (NYSE: SPHR) ("Sphere Entertainment" or the "Company") today reported financial results for the first quarter ended March 31, 2025. (1) Recent Sphere operating highlights include: For the three months ended March 31, 2025, the Company reported revenues of $280.6 million, a decrease of$40.8 million as compared to the prior year quarter. In addition, the Company reported an operatin ...