Sergey Mikhailovich Brin is an American businessman best known for co-founding Google with Larry Page. 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 and board members. As of November 2023, Brin is the 10th-richest person in the world, with an estimated net worth of $111 billion according to the Bloomberg Billionaires Index.