Director of Aetna or its predecessors since 2002

Ronald A. Williams is Chairman and Chief Executive Officer of Aetna Inc. Under his leadership, Aetna has sought to make a positive impact on health care in America by serving as a catalyst for change. Joining Aetna in 2001, Mr. Williams has focused on creating innovation in the industry, helping make possible new levels of transparency in the health care system. He was named CEO in February 2006 and Chairman of the Board in October 2006. Mr. Williams also serves as chairman of the Council for Affordable Quality Healthcare and is a trustee of The Conference Board and the Connecticut Science Center Board. In January 2007, he was elected to the Board of Directors of American Express Company, and in October 2008, he was elected a vice chairman of The Business Council. At the Massachusetts Institute of Technology, he serves on the MIT North America Executive Board. He is a member of the Alfred P. Sloan Management Society, the Business Roundtable, the International Federation of Health Plans, the Healthcare Leadership Council and the National Intelligence Senior Advisory Group. Prior to joining Aetna, Mr. Williams was Group President of the Large Group Division at WellPoint Health Networks Inc. and President of the company’s Blue Cross of California subsidiary. Mr. Williams is a graduate of Roosevelt University and holds an M.S. in Management from the Sloan School of Management at the Massachusetts Institute of Technology.