Ronni Chasen, executive vice president and head...

Ronni Chasen, executive vice president and head of the motion picture division at public relations firm Rogers & Cowan, has left to establish a marketing and public relations firm, Ronni Chasen Associates, which will focus on motion pictures. The client list of the new Los Angeles firm includes, among others, Zanuck Co., Irwin Winkler Productions, directors Stan Dragoti and John Landis, TV producers Donald March and Reiker & Jones, and the Christmas releases, “Driving Miss Daisy” and “Music Box.”