Hultberg was born in Berkeley,California. He studied at the California School of Fine Arts with Clay Spohn, Richard Diebenkorn, David Park, Clyfford Still and Mark Rothko. Hultberg made his mark with dramatic, often dark, landscapes and interiors interspersed with recognizable imagery and grounded by an obvious horizon line. His paintings and prints take viewers through a vortex into compartmentalized apocalyptic and alien lands (often inhabited by demons or otherworldly beings), where occasional uncluttered expanses create windows into the unknown. His works were prophetic, emphasizing pollution and environment issues.
Metropolitan Museum of Art, New York City
Whitney Museum of American Art, New York City
Museum of Modern Art, New York City
National Museum of American Art, Washington D.C.
St. Louis Art Museum, MI
Dallas Museum of Fine Arts, TX
Westmoreland Museum of Art, PA
Guggenheim Museum, New York City
Albright Art Gallery in Buffalo, NY
Krannert Art Museum, IL
University of Illinois, IL
University of Arizona, AZ