TV Spy reports that Friday was Mark Antonitis’s last day as general manager of KRON Channel 4 after four years at the station. The item doesn’t give Antonitis’ future plans. He’ll be replaced by Brian Greif, previously vp for news at Young Broadcasting, KRON’s owner.

Greif has been with Young Broadcasting since 2003. Previously he was a vp for Frank N. Magid Associates consultancy for 11 years. He was also news director at WSVN-TV in Miami from 1988 to 1993 and worked at WHO-TV Des Moines, rising to the post of station manager.

Antonitis (pictured) was previously news director at NBC O&O WMAQ-TV Chicago. He has also worked at stations in New York, St. Louis, Denver and Young’s station in Sioux Falls, S.D. In 2004, Antonitis replaced Dino Dinovitz, who retired.