William K. Reilly is a founding partner of Aqua International Partners, a private equity fund dedicated to investing in companies engaged in water and renewable energy, and a senior advisor to TPG, an international investment partnership. Bill served as the first Payne Visiting Professor at Stanford University (1993–1994), administrator of the U.S. Environmental Protection Agency (1989–1993), president of the World Wildlife Fund (1985–1989), president of The Conservation Foundation (1973–1989), and director of the Rockefeller Task Force on Land Use and Urban Growth (1972–1973). He was head of the U.S. delegation to the United Nations Earth Summit at Rio in 1992.
Bill is chairman of the board of the ClimateWorks Foundation, chairman emeritus of the board of the World Wildlife Fund, co-chair of the National Commission on Energy Policy, chair of the advisory board for the Nicholas Institute for Environmental Policy Solutions at Duke University, and a Trustee of the National Geographic Society. He also serves on the board of directors of DuPont, ConocoPhillips, and Royal Caribbean International. He holds a B.A. degree from Yale, a J.D. from Harvard, and an M.S. in urban planning from Columbia University.