Tim Mosman studied drawing and painting with John Dilg and David Dunlap at the University of Iowa School of Art, BFA 1978 and MA 1985. He earned an MFA at Mills College in Oakland California studying with Jay DeFeo and Ron Nagle from 1986–1988. After graduation he found work doing exhibition installation at various Bay Area museums and moved into a studio on 19th Street in West Oakland. Mosman began showing his painting and sculpture at the Dorothy Weiss Gallery in San Francisco in the summer of 1988. In 1990, Mosman became the Assistant Director of the Mills College Art Gallery. Mosman's studio practice is focused on painting and drawing across a variety of media.