Company: Plaxo, Napster, Airtime
School: Chantilly High School
Net worth: $3.2 billion
Parker never even went to college, yet is one of the most successful serial entrepreneurs.
He’s the co-founder of the music sharing service Napster, and later served as Facebook’s first president.
Parker was also involved in the founding of companies like Plaxo and Airtime. Currently, he’s a partner at Peter Thiel’s investment firm, The Founders Fund, and board members of Spotify and Yammer.