Marital status: Married
Highest Education: Master's degree
Bianchini worked on tech IPOs in the late '90s as an analyst for Goldman Sachs before joining a client to found a digital consultancy, Harmonic Communications. They sold it to ad
agency Dentsu in 2003, but not before Bianchini connected with Harmonic board member Marc Andreessen. The two hatched the idea for Ning, a platform that lets users create and manage
their own social networks.
Ning now hosts 52 million users--and last year raised $60 million at a valuation of $500 million. Bianchini runs the day-to-day operations while Andreessen serves as an adviser.
Reading: One Minute to Midnight, a history of the Cuban missile crisis.
NEXT: Keith Meister