There is a huge opportunity to transform manufacturing, but it’s an industry that can be difficult to get traditional VCs excited about. Not Matt— his deep experience with and excitement for digital manufacturing is unique among the investor community. We feel incredibly grateful to have partnered with Matt.
- Josh Gomes, Co-Founder and CEO, Parallel Fluidics
Matt has been a terrific investor, advisor, and partner for Xometry from our Series A through our IPO. His experience and participation were instrumental to help secure our early financings. Matt energetically helped recruit A-level talent, and he’s always provided thoughtful, well-reasoned, and timely advice on critical strategic topics and decisions. Matt is a good person, with high ethical and moral standards. You would be lucky to have him on your team.
- Randy Altschuler, Co-Founder and CEO, Xometry (NASDAQ: XMTR)
Matt has been a fantastic advisor, active board member, and an energetic contributor on multiple levels to Proto Labs…as a CEO, I would strongly recommend Matt as an investor and as a board member. I’d hire him without reservations. Here’s why: Matt is 100% honest and very principled. I never doubt his integrity. You can always have confidence that Matt is telling you the truth and that he is sincere. He works hard to find ways to contribute. You will find him understated, humble, and easy to get along with.
- Brad Cleveland, Former CEO of Proto Labs (NYSE: PRLB)
Matt is an impactful investor and advisor for 3DEO. His experience, knowledge, and network in manufacturing technology are unmatched. We appreciate his high energy, independent thinking, and focus on fundamentals.
- Matt Petros, PhD, Co-founder and CEO of 3DEO
Matt’s a great partner and we were thrilled to have him as an investor in our A round. His knowledge of digital manufacturing and experience set are unique. The clarity of his vision stands out and he’s right to focus on this, not just selfishly for us. We see his thesis clearly, but most VCs don’t. I have no doubt great founders will want to partner with him early. I’m excited to see what he builds with Praxis.
- Adam Keating, Co-founder and CEO of CoLab
Matt is a technology investor and entrepreneur, based in San Francisco. He is the Founder and General Partner of Praxis. Matt was an early investor and board member at Proto Labs (NYSE: PRLB) and an early investor and advisor to Xometry (NASDAQ: XMTR). Matt also serves as a Senior Advisor to Vector Capital, where he was previously a Managing Director. Before Vector, Matt was a General Partner at North Bridge Growth Equity. Matt is also the Co-Founder and Executive Director of Put Me In!, a nonprofit that increases access to sports for children experiencing parental incarceration. Matt holds a B.A. in Economics and a B.A. in Political Science from Yale University.
Founder & General Partner
As a Principal at Praxis, Greg draws upon his deep background in product engineering and research to identify key investment opportunities and support portfolio companies. He has built and led teams spanning product, hardware, materials, and software engineering. Greg is an inventor on 8 patents, and his research and entrepreneurship experience crosses polymer chemistry, 3D printing, soft robotics, bioelectronics, and orthopedic devices. He holds a B.S. in Mechanical Engineering from the Georgia Institute of Technology, and a Ph.D. in Materials Science and Engineering from the University of Texas at Dallas.
Greg Ellson, Ph.D.
As Chief of Staff at Praxis, Alyssa works closely with the General Partner and Principal on all prospective investments, portfolio companies, and firm operations. Alyssa previously worked at Cooley LLP in Palo Alto (2022-2023), Covington & Burling LLP in San Francisco (2021), and at Stanford Medical School. She currently counsels for-profit and nonprofit entrepreneurs affiliated with Yale Ventures through the Entrepreneurship and Innovation Clinic at Yale Law School. Alyssa serves on three nonprofit boards and founded Walls to Bridges, a restorative justice program, as an undergraduate. She holds a B.A. in Legal Studies and Philosophy, summa cum laude, from the University of California, Santa Cruz, and will complete her J.D. at the Yale Law School in May 2024.
Chief of Staff
Board of Directors