Ownership profile
Who owns 24 Hour Fitness?
24 Hour Fitness is a privately held gym chain currently owned by private equity firm LongRange Capital in partnership with company founder Mark Mastrov, following an acquisition announced on January 7, 2026.
Ownership profile
24 Hour Fitness
24 Hour Fitness USA, LLC
Evidence (10)
The operating legal entity is '24 Hour Fitness USA, LLC', headquartered at P.O. Box 2689, Carlsbad, CA 92018, per the site footer of 24hourfitness.com
https://www.24hourfitness.com/LongRange Capital is explicitly identified as a private equity firm in multiple independent sources, including its own website and deal databases
https://www.longrangecapital.com/LongRange Capital describes itself as a Stamford, CT-based private equity firm focused on long-term investments in middle-market businesses, with over $1.7 billion in AUM
https://www.businesswire.com/news/home/20260616886269/en/LongRange-Capital-to-Acquire-Pizza-Hut-Excluding-Mainland-China-from-Yum-BrandsOn January 7, 2026, LongRange Capital and founder Mark Mastrov partnered to acquire 24 Hour Fitness; Mastrov returned as Owner and Executive Chair
https://www.prnewswire.com/news-releases/24-hour-fitness-founder-mark-mastrov-returns-to-accelerate-brands-next-era-of-growth-302654641.htmlPaul, Weiss confirmed it advised LongRange Capital on the acquisition of 24 Hour Fitness alongside founder Mark Mastrov
https://www.paulweiss.com/insights/client-news/longrange-capital-acquires-24-hour-fitnessAxios reported that the acquisition saw LongRange Capital and Mastrov buy 24 Hour Fitness from prior majority owners Monarch Alternative Capital, Sculptor Capital Management, and Keyframe Capital Partners
https://www.axios.com/2026/01/07/24-hour-fitness-sold-mark-mastrovWikipedia confirms 24 Hour Fitness is privately held, headquartered in Carlsbad, CA, operating 244 clubs across nine U.S. states as of October 2025
https://en.wikipedia.org/wiki/24_Hour_FitnessPrior ownership history: company was sold to Forstmann Little & Co. (PE) in 2005, then to AEA Investors and Ontario Teachers' Pension Plan in 2014, and emerged from 2020 bankruptcy under Sculptor Capital, Monarch Alternative Capital, and Cyrus Capital Partners
https://en.wikipedia.org/wiki/24_Hour_FitnessNBC News described LongRange Capital as the 'private equity group' that owns 24 Hour Fitness in context of its subsequent Pizza Hut acquisition
https://www.nbcnews.com/business/consumer/pizza-hut-private-equity-24-hour-fitness-rcna350333Mergr records the transaction as: 'On January 7, 2026, private equity firm LongRange Capital acquired consumer services company 24 Hour Fitness'
https://mergr.com/transaction/longrange-capital-acquires-24-hour-fitnessWhat's uncertain
- The exact ownership split between LongRange Capital and Mark Mastrov has not been publicly disclosed; it is not confirmed whether LongRange holds a strict majority or whether Mastrov co-controls the entity.
- No SEC EDGAR Form D or state registry filing was directly reviewed to confirm the LLC ownership structure post-acquisition.
- Financial terms of the January 2026 acquisition were not disclosed.
- The prior post-bankruptcy ownership structure (Sculptor Capital, Monarch Alternative Capital, Cyrus Capital, Keyframe Capital) was exited as of January 7, 2026.