Severino, 57, was vice president and general manager of WIBC-FM 93.1, WLHK-FM 97.1, WFNI-AM 1070 and WYXB-FM 105.7. He joined Emmis in 1994.
"[This] is a very difficult [time] for all of the Emmis family," Emmis Chairman Jeff Smulyan said in a statement. "To those of you who knew [Severino] and loved him, his spirit will remain forever in our hearts."
During his 30-year-plus radio career, Severino spent time as an on-air personality, advertising account executive, retail sales manager, station manager, general manager, marketing manager and radio group vice president.
He has been named one of the top 50 General Managers in America by Radio Ink magazine every year since 1998. He was ranked No. 1 general manager in the medium market category in 2003 and 2004.
Severino, a 1973 graduate of Murray State University in Kentucky, is survived by his wife of 29 years, Linda, and three children.