Allison Transmission announced David Graziosi has begun serving as CEO.
Graziosi will continue as president, a post he has held since January 2016.
Indianapolis-based Allison announced Graziosi’s selection in August 2017. He succeeds Lawrence Dewey, who retired May 31 as the company’s longest-serving executive in its 103-year history.
Graziosi joined Allison as chief financial officer in November 2007, shortly after the sale of Allison by General Motors to The Carlyle Group and Onex Corp., which ultimately led to an initial public offering in March 2012.
Allison is the world’s largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles and is a leader in electric hybrid-propulsion systems for city buses, according to the company.