Exhibit 99.1 PENN Entertainment Reports First Quarter Results WYOMISSING, PA (May 2, 2024) - PENN Entertainment, Inc. (“PENN” or the “Company”) (Nasdaq: PENN) today reported financial results for the three months ended March 31, 2024. Jay Snowden, Chief Executive Officer and President, said: “Our property level performance showed resilience this quarter, with stable trends continuing into April following portfolio-wide severe weather through mid- February. Meanwhile, ESPN BET continues to drive strong top o ...