No. 12

Chip Chipman/Bloomberg

No. 12

Max Levchin, 34
Founder, Chief Executive, Slide

No. of Angel Investments: 7
Companies funded (a sampling): Evernote, MixPanel, Raptr, Slide, Yelp

Max Levchin is a co-founder and former chief technology officer of PayPal, which was sold to eBay for $1.5 billion in 2002. The 34-year-old Ukrainian’s latest venture is Slide, a maker of apps for Facebook and other social networks. In the past year, Levchin has moved Slide from mostly relying on ad revenue to selling virtual goods as a major source of income. (Levchin is an angel investor in YouNoodle, the research company that provided the angel investor ranking.)