Dorsey co-founded Twitter in 2006 alongside Noah Glass, Biz Stone and Evan Williams. Dorsey held the top job twice throughout leadership changes and stepped down as CEO last year. The company's then-chief technology officer Parag Agrawal succeeded Dorsey as CEO before leaving as part of Musk's takeover. Dorsey has since shifted his focus to solely managing his payments company Block, formerly known as Square. He has been an outspoken advocate of Musk's takeover, writing in a tweet that "This is the right path… I believe it with all my heart."