Sergey Mikhaylovich Brin (, tr. "Sergéj Mixájlovič Brin"; born August 21, 1973) is an American computer scientist and Internet entrepreneur. Together with Larry Page, he co-founded Google. Brin was the president of Google's parent company, Alphabet Inc., until stepping down from the role on December 3, 2019. He and Page remain at Alphabet as co-founders, controlling shareholders, board members, and employees. As of January 2021, Brin is the 9th-richest person in the world, with an estimated net worth of US$75 billion.