Frederick J. Ruegsegger

Managing Director

With more than 30 years of experience in the life sciences industry, Fred specializes in financial and general management. Before co-founding Four Oaks Partners in 2012, Fred served as CFO at Sterigenics International, a global contract sterilization firm, preceded by serving as CFO of Ion Beam Applications (IBA), a Belgian-based technology company that spun out Sterigenics in 2004. Before IBA, Fred provided consulting services to a variety of firms, including Centaur Pharmaceuticals, and held CFO positions at Neoforma, an internet-based healthcare supply chain company, and Axys Pharmaceuticals, a molecule drug discovery company. Prior to Axys, Fred was CEO of Houston-based EyeSys Technologies, an ophthalmic instrumentation company, and was CEO, COO, and CFO of Vitaphore Corporation, a biomaterials-based medical device company located in Menlo Park, CA. Prior to that, he was CFO of the Milpitas, CA-based NeuroScience, Inc., a brain mapping instrumentation company, and CFO of Fischer Imaging Corporation, a Denver, CO-based medical imaging equipment manufacturer. In addition, Fred currently sits on the board of Transcept Pharmaceuticals. Fred received his BS in economics from the University of Illinois and his MM from the J.L. Kellogg Graduate School of Business at Northwestern University.


Our firm is focused on bringing extensive operating, financial and investment experience to the execution of transactions for life sciences companies.

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