Thompson took over management of Grunt in 1973 and signed former Airplane drummer Joey Covington and Jack Traylor to the label. In 1974, RCA dropped all Grunt artists except for Jefferson Starship and Hot Tuna. Jorma Kaukonen signed to a solo deal with RCA in 1979, and Hot Tuna released Final Vinyl. Jefferson Starship and Starship used the label until Grace Slick left the band and joined Jefferson Airplane for a reunion tour and album on Epic Records.
To promote the label, Greg Irons and Tom Veitch wrote two issues of a comic book called Grunt Comix.[3]