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Richard J. Defieux has served as a director of the Company since 1996. Mr. Defieux served as a director of SDI from 1993 through 1996. Since 1990, Mr. Defieux has been a general partner of Edison Partners II, L.P., which is the general partner of Edison Venture Fund II, L.P., and Edison Venture Fund II-PA, L.P., and since 1994, a general partner of Edison Partners III, L.P., which is the general partner of Edison Venture Fund III, L.P. Since 1999, Mr. Defieux has also been a general partner of Allegra Capital Partners IV L.P. Since 2004, Mr. Defieux has been an Advisor to and Chairman of the Investment Committee of SJF Ventures I and II, a community development venture capital organization. Mr. Defieux also serves as a Director for Silicon Power Corp.; Primex Process Solutions, Inc. and Mentor Communications Group, Inc. Mr. Defieux received his B.A. and M.A. degrees in Geology from Boston University and his M.B.A. from Columbia University.
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