Keith Sonnier (b. 1941, Mamou, LA - d. 2020, Southampton, NY), known best for his use of neon in standalone sculptural works and installations alike, is a key figure in the Conceptual and post-Minimal art movements of the late 1960s. Sonnier earned a B.A. at University of Southwestern Louisiana in 1963, and an M.F.A. at Rutgers University in 1966. Sonnier was a two-time recipient of the National Endowment for the Arts grant (1975, 1981), and was awarded the John Simon Guggenheim Memorial Fellowship in 1974. Curator Harald Szeeman included Sonnier’s work in his groundbreaking exhibition Live in Your Head: When Attitudes Become Form at Kunsthalle Bern (Bern, CH) in 1969. His work was included in key historic exhibitions cementing the basis of contemporary art: Eccentric Abstraction, Fischbach Gallery, New York, NY curated by Lucy Lippard (1966) and 9 at Leo Castelli: Anselmo, Bollinger, Hesse, Kaltenbach, Nauman, Saret, Serra, Sonnier, Zorio at Castelli Gallery, New York, NY (1968). Sonnier has been subject to over 150 solo exhibitions including: the Parrish Art Museum (Water Mill, NY), Hirshhorn Museum (Washington, DC), Hall Art Foundation (Reading, VT), Musée National d'Art Moderne, Centre Georges Pompidou (Paris, FR), Whitechapel Art Gallery (London, UK), and Wadsworth Atheneum (Hartford, CT), among others.