Tags: Architect.
John S. Hagmann is an American architect and former partner of Robert A. M. Stern. He received a bachelor’s degree from Amherst College and a master’s degree in architecture from Yale University. After graduating from Yale he formed the firm of Stern & Hagmann with Stern a fellow student from his days at Yale in 1969. In 1977 he founded the successor firm John S. Hagmann Architects.