Eduardo Saverin was a Facebook cofounder and its first CFO. He famously sued Mark Zuckerberg and the two reached a settlement.

Employed by Facebook from: February 2004

Position at Facebook: Cofounder

Where he is now: After winning a legal battle with Facebook which let him retain his co-founder status, Saverin began angel investing in startups like Qwiki and Chris Hughes' Jumo. In 2011, Saverin renounced his US citizenship and returned to his home country Brazil, likely because of the taxes he'd have to pay following Facebook's public offering. He says he has no hard feelings when it comes to Facebook or Mark Zuckerberg, who ousted him from the company shortly after its launch.