Rosati's Authentic Chicago Pizza, doing business as Rosati's Pizza, is an American casual dining restaurant chain specializing in Chicago-style pizza. Its headquarters is in Warrenville, Illinois.[1] There are more than 200 locations across the United States,[2][3] with more than a third of them in Illinois.[4] Rosati's has over $211 million in revenue[5] and was founded in 1926 by Saverio Rosati at the corner of Pulaski and Madison in Chicago's west side.[6] That location closed down and in 1964 reopened in Mount Prospect, IL. By 1995, Saverio's five sons, Fred, Richard, Al, Bill and Ronald, had grown the company to become the fourth largest pizza chain in the Chicago area, only behind Pizza Hut