David Sleeman

Director of Business Development at Winston Art Group

David Sleeman is Director of Business Development at Winston Art Group, the largest independent art appraisal and advisory firm in the United States. Winston Art Group assists clients with appraisals for all purposes, advises clients on buying and selling works of art, and handles the management of clients’ collections. The firm’s 50 specialists cover all areas of fine and decorative art, jewelry, and collectibles in the United States and overseas through offices in New York, Los Angeles, Boston, Palm Beach, Houston, and Denver, and representatives in Miami, London, and Geneva. Prior to joining Winston Art Group, David was Senior Vice President of Business Development at another art appraisal firm for nine years. Before that, he was a Fine Art Specialist and Risk Management Appraiser for Chubb Insurance Company in London and a Manager in the Valuation, Tax, and Heritage department at Sotheby’s, London.

David attended the University of West England, where he received his B.S.C. degree with honors in Valuation and Estate Management. David serves on the Steering Committee of Professional Affiliates for the Appraisers’ Association of America, the Arts and Records Committee for the Inland Marine Underwriting Association, and is a member of the Estate Planning Council of New York City. He is also an adjunct lecturer at Sotheby’s Institute of Art in New York, and has lectured at numerous art institutions and events around the country, including the Scottsdale Museum of Contemporary Art, the Saint Louis Art Museum, Art Hamptons, the US Artists American Fine Art Show in Philadelphia, New Britain Museum of Art in Connecticut, The Bruce Museum in Connecticut, The von Liebig Art Center’s Lecture Series in Florida, and the South Eastern Museums Conference in Virginia.