Born in Palermo, Sicily, 1941. He studied at the Brera Arts High School of Milan and the Zurich School of Arts and Crafts. He started working in Milan in the early 1960s as the first assistant of Massimo Vignelli. In the same period, he designed all the books published by Milano Libri including Linus magazine and the Italian edition of Charles Schulz’s Peanuts. In 1965 he joined Unimark International as a junior partner, working with Bob Noorda on numerous corporate identity programs for major clients including Agip and Feltrinelli. He redesigned the logotypes of Max Meyer and Pirelli and the coordinate image of San Paolo Bank. From 1969 to 1979 he designed Ottagono magazine for which he was awarded a Compasso d’Oro. In 1989 he left Unimark to establish his own firm, Gregorietti Associati.