Guillaume Castel 

Guillaume Castel is currently an Executive Director at the Advisory Board Company (ABCO) where he manages operations and strategy for the Chief Product Officer, overseeing approximately 1000 employees. Prior to this appointment, Guillaume oversaw strategic planning and partnerships for the firm. He joined the Advisory Board Company in 2014.
Guillaume came to the Advisory Board Company from Cisco Systems (CSCO) where his last appointment was as Director of Corporate Strategy in the Office of the President for Sales and Development, working on Go To Market and Sales innovation applied to Cisco’s top portfolio priorities such as Cloud, Software and other emerging technologies. Prior to 

that, Guillaume held a number of managerial and executive positions at Cisco over a six year period.Before joining Cisco Systems, Guillaume spent a year as the CFO of Allafrica Global Media and prior to that, he spent seven years with IBM (IBM) in a number of roles and functions ranging from Finance and Operations in IBM Global Services to Corporate Development at IBM’s Headquarters.Guillaume serves on the boards of the Heifer Foundation based in Little Rock, Arkansas and Copernicus.io based in Washington DC. He serves as an advisor to Kupanda Capital, a DC based, Africa focused investment company backed by TPG. He is a member of the Bretton Woods Committee in Washington DC. He has served on the Heifer Foundation Board of Trustees since 2016.

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