45. Garrett Camp and Naveen Selvadurai

Cofounder (Camp), cofounder and New York partner (Selvadurai), Expa

One of Uber’s cofounders, Garrett Camp, created startup lab Expa with help from New York partner Naveen Selvadurai, who had previously cofounded Foursquare.

This year, one of Expa’s portfolio companies, an Open Table-like service called Reserve, raised a $15 million series A round. Operator, another Expa service that promises to deliver you anything you want, raised a $10 million series A round in April. Camp is hopping from coast to coast while he works on Expa and its portfolio of startups.

This year, too, Eric Friedman, Foursquare's global senior director of sales and revenue operations, left the company to join Expa as its executive in residence, acting as an interim COO of sorts across companies in the portfolio. He spent five years at the mobile-location app and was one of the company's first 20 employees. Selvadurai and Friedman have known each other for seven years, before Foursquare was founded.