Mark Leslie is an angel investor focused on early-stage (pre-seed and seed) “frontier technology” companies in sectors. See sector focus and contact routes.
Mark Leslie is an angel investor focused on early-stage (pre-seed and seed) “frontier technology” companies in sectors including enterprise applications, data management, cybersecurity, applied AI, and HealthTech. His notable portfolio companies include Pano AI (Series A, 2022), Rubrik, Rigetti Computing (Series C, 2020), HealthTap, and Clumio (exited 2024). Leslie’s distinctive thesis centers on investing in deep tech with “fascinating science and technology” that can change the world, leveraging his 30-year track record as a board member of ~50 high-tech firms.
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