By Jon Robinson Fitness apparel brand Gymshark has named bodybuilder Chris Bumstead as a new shareholder. The Solihull-headquartered business has not revealed the percentage stake Bumstead now holds. Gymshark was founded by Ben Francis and Lewis Morgan in 2012. In 2020, it was valued at more than £1bn when US private equity firm General Atlantic acquired a 21 per cent stake. Bumstead said: “At this stage of my career, I’ve been fortunate enough to have been offered some very exciting opportunities, but I knew if I was going to do anything, it had to be with the right people and for the right r…