Environmental Sciences

Environmental Sciences Experts

Theodore Roosevelt Iv

Managing Director
Center for Climate and Energy Solutions
American Samoa


 Theodore Roosevelt IV is a Managing Director in Investment Banking at Barclays, based in New York. Currently, he serves as Chairman of the firm’s Clean Tech Initiative.  Mr. Roosevelt joined Barclays Capital when it acquired the North American assets of Lehman Brothers in September 2008. He started work with Lehman in 1972 as a general banker in domestic corporate finance. In 1977, following Lehman Brothers’ merger with Kuhn Loeb, Mr. Roosevelt was assigned to the International Department and also worked in the Firm’s Government Advisory Group. He joined the Short and Medium Term Corporate Finance Department in 1982 and was appointed manager of the department in 1985. He was named a Managing Director in 1984, and, in January 1991 he was asked to focus on the development of the Firm’s international business. He was elected Chairman of the Board of Directors of Lehman Brothers Financial Products Inc. in 1994, and Chairman of the Board of Directors of Lehman Brothers Derivative Products Inc. in 1998. In February 2007, he was appointed Chairman of Lehman Brothers’ Council on Climate Change. 

Research Interest

 Mr. Roosevelt is Board Chair of the Center for Climate and Energy Solutions (C2ES), Secretary of The Climate Reality Project, a member of the Governing Council of the Wilderness Society, and a Trustee for the American Museum of Natural History.  He is also Counselor, China-U.S. Center for Sustainable Development and served as a board member of the League of Conservation Voters for nine years; three of which, he served as the Chairman.  Mr. Roosevelt is also a member of the Council on Foreign Relations, the Economic Club of New York, and a Governor of the Foreign Policy Association.

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