Rachael Horwitz

CMO at Haun Ventures


Rachael Horwitz is the CMO of Haun Ventures, and she was the VP of Communications at Coinbase. Rachael Horowitz currently serves as the first-ever Spark Capital Marketing and Communications Partner. This role will put Horwitz at the head of the firm’s marketing and communications activities, along with community events and initiatives. Horwitz spent nearly five years at Twitter as Communications Director, and then took that experience to Facebook’s Communications department for another 15 months.

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Sam Rosenblum

Sam Rosenblum is a Partner at Haun Ventures. Previously, he was a Partner at Polychain Capital, Director of Business Development at Coinbase, Global Strategy Associate at Visa, and Analyst at Lake Partners Strategy Consultants. He obtained his B.A. from the University of California, Los Angeles, where he was a part of the UCLA Honors College and Sigma Alpha Epsilon Fraternity.

Mike Lempres

Mike Lempres previously served as Executive Director, general counsel, and Head of government affairs at Andreessen Horowitz. Previously, he was Chief Policy officer at Coinbase. He has extensive expertise in emerging or challenging regulatory environments, international affairs and corporate governance. He was elected to the Atherton City Council and is an active board member in both private and non-profit entities.

Will Robinson

Will Robinson is vice president of engineering at Coinbase and previously served as chief Technology officer at Chronicle. He graduated from Stanford University.

Manish Gupta

Manish Gupta is the executive vice president of engineering at Coinbase, previously served as vice president of engineering at Lyft. He is a graduate of the University of Bombay and the University of Illinois at Urbana-Champaign.

Max Branzburg

Max Branzburg is Head of consumer products at Coinbase and a graduate of Princeton University.

Amanda Jacobsen

Amanda Tyler is the Head of Marketing for Optimism and was previously the Director of Community for Polygon and Manager of Developer Relations at Google.

Colin Armstrong

Colin Armstrong is the founder of Paragraph and was previously an engineering manager at Google. He holds a Bachelor's degree in Computer Engineering from the University of Waterloo.

Michael Blau

Michael Blau is an investment partner at Andreessen Horowitz and previously was a portfolio analyst at BlackRock. He is a graduate of the Olin School of Business at Washington University in St. Louis

Surojit Chatterjee

Surojit Chatterjee is former Chief Product Officer at Coinbase. Surojit Chatterjee is joining Coinbase as our new Chief Product Officer after spending 11 years at Google. Coinbase is a product-led company, and Surojit will play a critical role in making the cryptoeconomy accessible to millions more people through Coinbase’s suite of products. Most recently, Surojit was Vice President of Product at Google, where he led Google Shopping, which helps people discover and compare products on Google. Before leading Google Shopping, Surojit was the Head of Product at Flipkart, a popular Indian e-commerce site, leading product management, user experience, product operations, and data science. Prior to Flipkart, Surojit was a founding member of Google’s mobile search ads product.

Andrew Chen

I’m a general partner at Andreessen Horowitz, where I focus on consumer and bottoms up SaaS. Previously, I led growth teams at Uber while advising and investing in dozens of startups in the Bay Area. I’ve written 650+ essays which have been featured and quoted in The New York Times, Fortune, Wired, and WSJ.