Grimm's wife Sonja confirmed that news to TheNewsCenter Saturday evening. He was 91-years-of-age.
Grimm was a popular radio disc jockey in the 1950s before coming to WTAP-TV.
Grimm was known for his mellow radio voice.
He later was one of a group of local owners of WTAP and remained as GM when Benedek Broadcasting bought the station in about 1980.
Soon after graduating, he went to work for WPAR 1450 AM, a Parkersburg radio station, under the professional name Bill Sherman. He did a nightly show called "Sessions with Sherman" and would go out about once a week to DJ shows and parties in Parkersburg.
He picked up other responsibilities at the radio station, including as program director and general manager.
"I was in radio work for quite awhile, although the DJ work was parttime because I was program director and so on," he said.
When he started in the mid-1940s, Sherman said radio was a big part of the community and the entertainment people enjoyed.
He retired in the late 1980s.