A number of his investments have led to significant exits, including AppNexus (acquired by AT&T), Climate Corporation (acquired by Monsanto), Okta (NASDAQ: OKTA), RingCentral (NYSE: RNG) and Upstart (NASDAQ: UPST). David hasalso been recognized by Fortune and Forbes as one of the top technology investors. Prior to Khosla Ventures, David spent five years at Tellme Networks as VP of marketing and business development. Using the quantitative decision making framework, RIFLE, the company drove revenue to over $100 million, and was ultimately acquired by Microsoft for more than $700 million. Previously, he led AOL’s communications, community and instant messaging product divisions as they surpassed 50 million users worldwide. David’s career began in door to door sales, where one sales pitch led to his new career in technology via McCaw Cellular, now AT&T.