David Sacks is a successful entrepreneur and investor who is best known for his role as the CEO of Yammer, a business-oriented social network. Sacks has had a long and varied career, beginning in the early 1990s when he was a part
David Oliver Sacks is a South African-American entrepreneur, author, and investor in internet technology firms. He is a general partner of Craft Ventures, a venture capital fund he co-founded in late 2017. Additionally, he is a co-host of the All In podcast, alongside Chamath Palihapitiya, Jason Calacanis and David Friedberg. Previously, Sacks was the COO and product leader of PayPal, and founder and CEO of Yammer. In 2016, he became interim CEO of Zenefits for ten months. In 2017, Sacks co-founded Craft Ventures, an early-stage venture fund. His angel investments include Facebook, Uber, SpaceX, Palantir Technologies, and Airbnb. In December 2024, President Donald Trump named Sacks the White House AI and crypto czar for the incoming administration; he stepped down in March 2026.