March 25, 2026 10:25 ·

Six Flags Entertainment has given in to demands from a hedge fund and replaced its chairman.

Last week, Jana Partners asked Six Flags to replace Marilyn Spiegel. [See Hedge fund pushes for changes at Six Flags.] Today, the amusement park company announced the appointment of Richard “Dick” Hadrill as executive chairman of the Six Flags Board of Directors, effective immediately.

Spiegel will continue to serve on the board as lead independent director. The move adds an 11th member to the Six Flags board of directors, at least until Jennifer Mason steps down at the end of her term this year, when the board will return to 10 members.

Hadrill is the former CEO of Bally Technologies, where he oversaw its acquisition by Scientific Games in 2014. Jana Partners' letter last week expressed the hedge fund's desire to see Six Flags work with what investors called the company's “known buyer interests.”

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