Share Thursday’s New York Stock Exchange listing of fitness franchise F45 is set to turn one of its two Sydney-born co-founders, Adam Gilchrist, into a Financial Review Rich Lister. Starting with a humble gym in Sydney’s Paddington in 2012, F45 has sold more than 2800 franchises in 63 countries. Over 1500 operating studios offer the 45-minute workouts for which Gilchrist, 43, and old rugby mate Robert Deutsch, 41, first named the business. Mark Whalberg with F45 CEO & founder Adam Gilchrist at the NYSE. AP Set on a global trajectory by the investment of Hollywood star Mark Wahlberg in 2019, F45 was valued at $US1.4 billion ($1.9 billion) by its $US325 million initial public offering. Shares popped as high as $US17.75 from their $US17 open, before closing on Thursday (Friday AEST) at $US16.20.