91. Alexander Asseily, Hosain Rahman, Matt Hunter

Co-founder and Chairman; Co-founder and CEO; Senior Software Product Designer, Jawbone

Jawbone quietly raised more than $100 million in a debt round of financing back in September because, Jawbone says, demand for its Up fitness tracker is high. In February of 2014, we got word that the company is raising $250 million at a $3.3 billion valuation.

A lot of the success of the fitness-tracking band Jawbone Up is thanks to Matt Hunter. Hunter designed the latest version of the Jawbone Up app that accompanies the wristband. Hunter is also regarded as one of the top designers in technology. Prior to joining Jawbone, Hunter founded Textslide and EightBit.me.

Jawbone also bought BodyMedia, a 14-year-old wearable fitness startup, for $100 million last year.