Mr. David Sacks is a Co-Founder at Riverside Ventures. Mr. Sacks is a Co-Founder and serves as General Partner at Craft Ventures. He serves as Board Member at Sourcegraph, OpenPhone Technologies, Inc and Bird Rides. He serves as Chairman at Harbor. He served as Advisor at Radius Intelligence. He serves as Board Member at Clickup, Trellis, Datasembly. He serves as Advisor at 0x. He has been a successful tech entrepreneur and investor for two decades. He was founder/CEO of Yammer, which was acquired by Microsoft for $1.2 billion in 2012. Previously, he was COO and product leader of PayPal during the famed "PayPal Mafia" founding era. He also served as interim CEO of Zenefits in 2016. He produced the award-winning independent movie Thank You For Smoking. AngelList's Naval Ravikant has called David "the world's best product strategist." He served as Board Member at Scribd.