Geoff Ralston serves as president of Y Combinator. Mr. Ralston is the co-founder of Imagine K12. He is an advisor at Accredible. He is also a partner at Y Combinator. He is an advisor at RaiseMe. He was an advisor and board member of Iris Automation. From 2007-2009, he was CEO at Lala Media, an innovative cloud music startup in Palo Alto that was acquired by Apple in December 2009. He was a member of the board of directors at Educents. He also worked at Yahoo! from 1997-2006 after its 1997 acquisition of Four11 Corp. At Four11, he was vice president of engineering and led the creation of Yahoo! Mail's predecessor, RocketMail. At Yahoo! he served as senior vice president and general manager of the Communications Business Unit before becoming the company's chief product officer. He is an advisor at Kodable. He is also an angel investor.