Executive Team

John Reilly is president and CEO of Six Flags Entertainment Corporation and also serves as a board director. He was appointed to these roles in December 2025.

Mr. Reilly has more than three decades of experience in the amusement and recreation industry, a proven track record of leadership in high-stakes environments, and significant operational management and strategic growth expertise. 

He most recently served as CEO of Palace Entertainment U.S. and group chief operating officer at Parques Reunidos, where he was instrumental in driving profitable growth and enhancing the guest experience across the company’s properties in the U.S., Australia and Europe.  Prior to Parques Reunidos, he served as COO and interim CEO at SeaWorld Parks and Entertainment, now United Parks & Resorts Inc., where he helped deliver meaningful EBITDA growth and total shareholder returns.

Mr. Reilly earned an MBA from the University of Miami and a B.A. from William & Mary. 

Tim Fisher is chief operating officer for Six Flags Entertainment Corporation. Tim retained the same role he held with Cedar Fair, L.P., where he joined in 2017. Tim has nearly 50 years of experience in the U.S. and international theme park industry, dating back to his first job at Carowinds in Charlotte, North Carolina.

As COO, Tim takes a hands-on and detail-oriented approach, ensuring the company’s long-range plan is executed with precision, and that the parks and resort properties perform to the company’s budgeted financial targets.

Prior to Cedar Fair, Tim served as CEO for three different regions of Village Roadshow Theme Parks in succession, including the North America region from April 2007 to January 2009; the Australia region through March 2017; and the Asia region through November 2017. Under Tim’s leadership as CEO, the theme park group achieved records for attendance, revenues and EBITDA performance. Prior to Village Roadshow, Tim was executive vice president of Paramount Parks and Viacom Recreation USA, where he was responsible for the management, operational and financial performance of all theme parks domestic and international until August 2006.

Tim previously served as a board director for Carlyle Group’s Apex Parks, and on the national board of A Kid Again, a non-profit organization that serves families with children that suffer from life threatening illnesses. Tim was awarded a BBA in Business/Marketing and an AA in Business Administration from American Intercontinental University.

Dave Hoffman will serve as interim chief financial officer, effective May 8, 2026, for Six Flags Entertainment Corporation.

Mr. Hoffman has served as the chief accounting officer of the company since the completion of the merger of legacy Six Flags and legacy Cedar Fair. Prior to the merger, Mr. Hoffman served as Senior Vice President and Chief Accounting Officer of Cedar Fair from 2012 until the consummation of the merger. 

Prior to that, he served as Vice President of Finance and Corporate Tax since 2010. He served as Vice President of Corporate Tax from 2006 through 2010. Prior to joining Cedar Fair, Mr. Hoffman served as a business advisor with Ernst & Young from 2002 through 2006. 

Dave earned a Bachelor of Science degree in accounting from the University of Toledo and a Master of Business Administration degree from the University of Michigan. He is a member of AICPA and OICPA.

Ty Tastepe is chief digital and technology officer for Six Flags Entertainment Corporation. He retained the same role previously held at Cedar Fair, L.P., since 2021.

Ty’s expertise in consumer-facing technologies propelled Cedar Fair’s guest satisfaction scores to new highs by implementing enhancements to the consumer’s online and park app experience. Ty also led initiatives to improve the Company’s enterprise-wide systems, the control environment behind those systems and data security in general.

Prior to joining Cedar Fair, Ty served for over two years as senior vice president, chief information and digital officer for Altar’d State, a fast-growing fashion retailer based in Tennessee with more than 120 stores in over 30 states. Prior to that, he spent nearly two decades delivering large-scale digital transformation programs for global brands such as Universal Parks and Resorts, Hilton Hotels, and Walt Disney Parks and Resorts. From 2001-2011, Ty held technology leadership roles at Disney Parks that included worldwide sales and travel operations, revenue management and marketing.

Ty earned an MBA from Villanova University and received both bachelor’s and master’s degrees in electrical engineering from Drexel University.

Seenu Sarma is chief procurement officer for Six Flags Entertainment Corporation. He retained the same role previously held at Cedar Fair, L.P., since 2021.

Seenu joined Cedar Fair to lead a transformational initiative to centralize procurement activities across the Company’s entire portfolio of entertainment properties to optimize the infrastructure’s efficiency and cost structure. His strategic expertise in designing and building centralized procurement programs and broad-based experience for world-class companies including NASA, helped Cedar Fair streamline the acquisition of equipment, products and services, and improve operational effectiveness. Prior to joining Cedar Fair, Seenu was chief procurement officer for Dean Foods, one of the nation’s largest food and beverage companies, where he led the centralization and transformation of the procurement function. Before that, he was a leader in Deloitte Consulting’s supply chain group for 18 years. Prior to his role at Deloitte, Seenu was an engineer and flight controller for NASA’s space shuttle program, supporting more than 30 flights in Mission Control.

Seenu holds an MBA in finance and corporate strategy from the University of Chicago, and master’s and bachelor’s degrees in electrical engineering, respectively, from the University of Houston and Rose-Hulman Institute of Technology in Terre Haute, Indiana.