** Shares of fitness center operator Planet Fitness PLNT.N
down as much as 4.3% at $59.90
** Co appoints Colleen Keating as CEO, effective June 10
** PLNT says Craig Benson will resign as interim CEO and
continue to serve as board member
** TD Cowen says, key priorities for Keating include
reinvigorating marketing efforts, accelerating gym openings and
operating in a more competitive environment
** On Feb. 22, PLNT announced its finance chief Tom
Fitzgerald will retire at the end of August
** Up to Monday's close, stock fell nearly 18% YTD
(Reporting by Anuja Bharat Mistry in Bengaluru)
((AnujaBharat.Mistry@thomsonreuters.com))