Dave Morin
40u40 mobilize dave morin
Age: 31

Co-founder and CEO, Path

The Montana native and die-hard skier made a name for himself at Facebook, where he helped lead development of Facebook Connect and Facebook Platform, two key features that helped propel the social network to 1 billion monthly active users. Now Morin runs Path, the private social network on iPhone and Google devices that limits friends to 150 users. An active angel investor, he put money into Rupture, an online gaming network snapped up by Electronic Arts for $15 million in 2008, and the gift-giving app Karma, bought by Facebook earlier this year.

--JP Mangalindan

- Last updated October 11 2012 03:32 PM ET
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Fortune's 40 Under 40

Who are 2012's young business stars? We've got the CEO of a blue-chip beer brand, an airline CEO who just placed the largest order in commercial aviation history, and Warren Buffett's new prodigy, among the Silicon Valley hotshots and others.

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