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Everything on the platform tagged with yammer.
Peter Fishman is the co-founder and CEO of Mozart Data, a Y Combinator-backed startup that lets anyone spin up a modern data stack in under an hour without hiring a data engineer. An economics PhD who once crunched numbers for the Philadelphia Eagles and ran a bacon hot sauce company, Fishman spent fifteen years building the same data pipelines over and over at Yammer, Zenefits, Opendoor, and Eaze before deciding to package that work into a product everyone could use.
David Sacks is a South African-born Silicon Valley operator turned venture capitalist and political power broker. He was PayPal's first product leader and COO, founded and sold Yammer to Microsoft for $1.2 billion, rescued Zenefits as interim CEO, and co-founded Craft Ventures, which manages billions in assets. He is a co-host of the chart-topping All-In podcast and served as the first White House AI and Crypto Czar in the second Trump administration before stepping aside in March 2026.

George Zachary is a General Partner at CRV (Charles River Ventures) and one of Silicon Valley's most storied venture capitalists, known for seed-stage bets on Twitter, Yammer, and PillPack. A Greek-American MIT graduate who once helped build the Nintendo 64 at Silicon Graphics, he pivoted from consumer internet to bioengineering after a near-miss cancer scare in 2015 - writing more diligence on his first biotech deal than in the prior decade combined. He deploys capital guided by a single question: does this founder need - not just want - to build something big?