Six Flags stock rises after appointing John Reilly as new CEO
Investing.com -- Six Flags Entertainment Corporation (NYSE:FUN) stock rose 2% after the company announced the appointment of John Reilly as its new President and Chief Executive Officer, effective December 8, 2025.
Reilly, who brings over three decades of experience in the amusement and recreation industry, will succeed Richard A. Zimmerman, who previously announced his departure on August 6. Reilly most recently served as Chief Executive Officer of Palace Entertainment U.S. and Group Chief Operating Officer at Parques Reunidos, where he improved guest satisfaction while driving margin expansion.
The appointment comes at a critical juncture for Six Flags following its merger with Cedar Fair last year. Marilyn Spiegel, Chair-elect of the Six Flags Board, noted that Reilly’s "significant experience optimizing theme park operations and performance" would help "reinvigorate profitable growth at our underperforming parks."
Prior to his role at Parques Reunidos, Reilly served as interim Chief Executive Officer and Chief Operating Officer at SeaWorld Parks and Entertainment, where he helped deliver EBITDA growth and shareholder returns.
The leadership change comes as Six Flags has recently faced pressure from activist investor JANA Partners, which has partnered with NFL player Travis Kelce to explore opportunities to enhance shareholder value and improve guest experience at the theme park operator.
Reilly will also join the Six Flags Board of Directors when he assumes the CEO position in December 2025, while Zimmerman will step down from both his executive role and board position at that time.
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