Leslie J. Sacks established his first gallery, Les Art International in Johannesburg, South Africa, in 1981.  Upon emigrating to the United States, he opened Leslie Sacks Fine Art in Los Angeles in 1992, which became an important American venue specializing in fine art editions and rare works on paper by Modern, Post-War and Contemporary American and European masters.  In 2007 Leslie Sacks Fine Art acquired Bobbie Greenfield Gallery in Santa Monica, California establishing this second venue as Leslie Sacks Contemporary.  This space focused on editions and works on paper by Post-War and Contemporary masters and represented the Estate of Robert Motherwell (the Dedalus Foundation).

Leslie Sacks passed away in 2013.  With over three-decades in the art world, his legacy lives on through Leslie Sacks Gallery, helmed by Managing Director and Partner, Temma Nanas who has been with gallery since 2002. She carries forward the gallery's venerable history and reputation while continuing to evolve its distinguished program and unrivaled Post-War and Contemporary inventory. The emphasis remains on connoisseurship, integrity, and a deep commitment to working with clients to build collections of lasting personal significance.

Leslie Sacks Gallery is a proud member of the International Fine Print Dealers Association (IFPDA) since 2001.