Tiffany R. Warren Leaving Omnicom for Role at Sony Music Group

Holding company’s chief diversity officer joined in 2009

Tiffany R. Warren, svp and chief diversity officer of Omnicom Group, announced that she is stepping down from the role and joining Sony Music Group. In addition to her role at Omnicom, she is the founder of Adcolor, a successful annual multicultural event, education and awards program.