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[3][4][8]. His investment thesis targets seed, early, and later-stage ventures globally, with a focused thesis on energy, cybersecurity, climate, and information technology infrastructure[3][5][7]. 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[1][5]. Notable portfolio companies include Check Point Software Technology, Roku, RedSeal (which he chaired as CEO), and Tri Alpha Energy[4][5][11]. 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[2][10]. 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[4][5][9].
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