Shawn “Pecas” Costner announced via Rap Radar today that he has resigned from Def Jam Records and will take a new role as senior management executive at Roc Nation Sports on December 1st.

Last May, Costner was named EVP of Def Jam—he has been at the legendary label since 2005 and his previous roles include VP of Lifestyle Promotion and SVP. Costner got his start in the music industry back in 1994, as national director of street promotion for Penalty Records. He previously worked as director of rap promotions at V2 Records, Elektra and as director of urban promotions at Arista, among other positions.