You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract GroupM Creates Chief Data Role, Names New MediaCom North America CEO Goldhersz Named GroupM Chief Data Officer and CEO of Analytics By Alexandra Bruell, Published on July 29, 2014 0 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.