APEX, also known as Ricardo Richey, is a street artist who creates colorful abstract patterns through the use of spray paint. Part of the Gestalt Collective that engages in collaborative murals in San Francisco, Apex curated mural projects on Bluxome Alley, other districts of San Francisco, and the SFMOMA display windows in association with St. Johns Community Center (San Francisco, 2002). His work has been shown extensively both in the Bay Area and abroad.