Bachelor of Science, University Connecticut, 1957. Master of Business Administration, Harvard University, 1959.
Vice president American Research and Development Corporation, Boston, 1960-1966. Partner, president Greylock Management Corporation, since 1966. Board directors Stellar Computer Corporation, Newton, Massachusetts, Floating Point Systems, Beaverton, Oregon, Micom Sytems, Simi Valley, California, Data Input Output Corporation, Kirkland, Washington, Lumber Mutual Insurance Company, Framingham, Massachusetts.
Trustee Kenyon College, Gambier, Ohio, since 1985, Dana Hall School, Wellesley, Massachusetts, 1974-1984. Served to lieutenant colonel United States Army, United States Army Reserve, 1951-1973. Clubs: Algonquin (Boston), Harvard (Boston and New York City).
Married Catherine Corbett, April 21, 1951 (divorced February 1985). Children: Charles P. Junior, David C., Catherine C., Patricia C. Married Angela Peterson, February 16, 1985.