Samuel Robson Walton, popularly known as Rob Walton, is an American businessman who is the 12th richest person in the world as per the Forbes 400 list of 2019, having an estimated net worth of more than $50 billion. Being the eldest son of Helen and Sam Walton, the co-founder of Walmart, Rob fondly remembers moving boxes and sweeping floors at his Dad’s stores when he was a child. An heir to the retail fortune of Walmart, he has served as the Chairman of the corporation for over 20 years till 2015. He handed over the post to his son-in-law Greg Penner, after his retirement, and currently serves as a member of the Board of Directors for Walmart. S. Robson Walton is also a board member of the Walton Family Foundation and along with his brother and sister has pledged $2 billion to the foundation. When he is not working, Rob is an avid sports cars collector; he loves to race, cycle, and fly planes.