Mark Mastrov

Mark Mastrov becomes interim CEO of 24 Hour Fitness after Karl Sanft's departure.

24 Hour Fitness founder Mark Mastrov discusses his decision to reacquire the gym chain and the evolving competitive landscape between big-box and boutique fitness concepts.

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Americans have no shortage of brick-and-mortar fitness offerings to choose from, but which brands dominate the U.S.

UFC GYM sees growth in combat sports as a workout format

UFC Gym and longevity medicine company NexGen MD Scientific have announced a joint venture that will place clinics inside UFC Gym locations, giving members access to GLP-1s, hormone replacement therapies and peptides alongside their usual training programming.

Transom Capital acquires WellBiz Brands, parent of Drybar and Fitness Together.

The gym chain said Wednesday that founder Mark Mastrov—who scaled the business from a single club to 420 locations and 4.5 million members before selling it in 2005 in a deal valued at more than $1.6 billion—is returning

Many people at the top are hated, or at the very least they divide opinion, that isn’t the case for Mark Mastrov, one of the fitness industry’s most highly respected and well-liked figures.

barre3 CEO Sadie Lincoln leads franchise expansion to 190 studios

UFC Gym is a fitness and gym franchise that offers a range of group fitness classes and personal training services.

EōS Fitness has boosted its footprint with the acquisition of Texans Fit, a Houston-based gym chain founded by the Houston Texans and fitness company M6 Football, owned by Mark Mastrov, co-founder and former CEO of 24 Hour Fitness.

Adam Sedlack has been promoted to Chief Executive Officer of UFC GYM.

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