http://www.newsweek.com/what-jack-dorsey-said-elon-musk-comments-twitter-shareholder-1698038 > Elon Musk, U.S. billionaire and CEO of SpaceX and Tesla, has offered to buy Twitter. Notably, the company's co-founder and former CEO Jack Dorsey once referred to Musk as his single favorite Twitter user. > On Thursday, Musk confirmed—via Twitter, naturally—that he had submitted a statement to the U.S. Securities and Exchange Commission (SEC) outlining his intentions to purchase one of the most popular social media platforms in the world.