GrimmerRoche  was inspired by the vision of two men with a passionate commitment to the artistic traditions of the native tribes of North America. Drawing on more than four decades of combined experience in the field of historic American Indian Art, the partnership strives to offer the highest level of excellence in acquisitions and sales, collection development and management, and appraisals. GrimmerRoche is also the exclusive consultant to Sotheby's, and organizes annual auction sales of American Indian art in New York.

H. Malcolm Grimmer, one of the leading authorities in historic American Indian Art, is also a noted specialist in the art of the Plains Indian. In 1984, he founded the nation's premier gallery for American Indian art in Santa Fe, New Mexico. After ten successful years, Mac sold the gallery and shifted his focus to becoming one of the country's most prestigious private antique American Indian art dealers. Over the past twenty-five years, Mac has played a role in the assembling of almost every important antique American Indian art collection in America, as well as creating many specific interest collections for his clients. He is once again breaking new ground in the business with the formation of this unique partnership.

David M. Roche has been the Director of Sotheby's American Indian Art Department for the past eleven years. During his tenure, numerous auction records have been set including the highest grossing auction sale of American Indian art and the highest price ever paid for a work of native artistry. Prior to working at Sotheby's, David served for two years as director for Gallery 10 in Scottsdale, Arizona and Santa Fe, New Mexico. He has a B.A. in American Indian history from the University of Illinois and a M.F.A. from New York University.