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William McNabb is the former Chairman and Chief Executive Officer of Vanguard. He joined Vanguard in 1986. In 2008, he became Chief Executive Officer; in 2010, he became Chairman of the Board of Directors and the Board of Trustees. He stepped down as Chief Executive Officer at the end of 2017 and as Chairman at the end of 2018. Earlier in his career, he led each of Vanguard’s client facing business divisions. A board member of UnitedHealth Group, IBM, and Axiom, he is also Chairman of Ernst & Young’s Independent Audit Committee. He is a board member of CECP: The CEO Force for Good, a board member of the Philadelphia School Partnership, and the Chairman of the board of the Zoological Society of Philadelphia.