Ray Rothrock is the founder of FiftySix Investments, a Silicon Valley venture firm. See portfolio, sector focus and contact routes.
Ray Rothrock is the founder of FiftySix Investments, a Silicon Valley venture firm, and a partner emeritus of Venrock, where he spent 25 years investing in over 50 companies including Check Point and Lycos. His investment thesis targets seed, early, and later-stage ventures globally, with a focused thesis on energy, cybersecurity, climate, and information technology infrastructure. Rothrock typically invests personal capital as an angel investor across 29 documented deals, though specific check sizes and lead/follow patterns are not publicly detailed. Notable portfolio companies include Check Point Software Technology, Roku, RedSeal (which he chaired as CEO), and Tri Alpha Energy. He is the author of the book *Digital Resilience: Is Your Company Ready for the Next Cyber Threat?* and frequently writes and speaks on cybersecurity, nuclear energy, and venture capital. A former nuclear engineer with degrees from Texas A&M, MIT, and Harvard, he also served as chairman of the National Venture Capital Association in 2012–2013.
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