24 Hour Fitness is heading back to its roots. Founder Mark Mastrov has returned as owner and executive chair after a deal completed with LongRange Capital, bringing the brand back under the leadership of the person who originally scaled it into a major gym chain.
What the Deal Means
Company announcements frame the move as a reset and growth push, with Mastrov partnering with LongRange Capital to support the current executive team led by CEO Karl Sanft.
Why This Story Matters
The commercial gym industry has changed dramatically since Mastrov sold the company in 2005. A founder buyback signals both confidence and urgency: the brand wants to modernize and regain momentum.
Final Take
Founder returns are rare at this scale. If Mastrov brings the same expansion energy that defined 24 Hour Fitness’s rise, this could shape what the next era of big-box gyms looks like.