Mark S. Mastrov is an American businessman who is the co-founder and former CEO of 24 Hour Fitness. He is also part of the Sacramento Kings ownership group.
Career
The 24 Hour Fitness began in 1983 as a one-club operation called 24 Hour Nautilus.[1] Mark Mastrov and Leonard Schlemm began the firm, with Mastrov and Schlemm remaining to continue its expansion.[citation needed]
In 1998 David Giampaolo and Mark Mastrov co-founded Fitness Holdings Europe, a private-equity-backed investment vehicle, to open and acquire small chains of European health clubs.[citation needed] Fitness Holdings Europe was merged into 24 Hour Fitness Worldwide, Inc. in 2000.[2]
In 2010 Mastrov founded Hard Candy Fitness with Madonna and her manager Guy Oseary.
^Dinger, Ed; Dogil, Arianna (2014) [previous version appeared in vol.71]. Pederson, Jay P. (ed.). "24 Hour Fitness Worldwide, Inc". International Directory of Company Histories. 152. Farmington Hills, Michigan: St. James Press (Gale, Cengage Learning group): 2. ISBN978-1-55862-888-5.