John Reillys tenure as CEO, president, and board member of Six Flags Entertainment Corporation will begin Dec. 8, 2025. Six Flags announced the news on Nov. 24. Reilly spent 21 years with United Parks & Resorts formerly called SeaWorld Parks & Entertainment, including one year as interim CEO, before transitioning in 2019 to Parques Reunidos and its Palace Entertainment division, where he...
