Mr. David Filo was a Co-Founder and served as the Chief Yahoo at Yahoo. He co-founded the Yahoo Internet navigational guide in April 1994 with Jerry Yang and co-founded Yahoo in April 1995. He is the Founder and serves as President and Director at Yellow Chair Foundation. Filo serves as a key technologist, directing the technical operations behind the company's global network of Web properties. He is credited with helping build Yahoo into the world's most highly trafficked Web site and one of the Internet's most recognized brands. Filo is an Angel Investor. He holds a B.S. degree in computer engineering from Tulane University and an M.S. degree in electrical engineering from Stanford University. He is currently on a leave of absence from Stanford's electrical engineering Ph.D. program.