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 JWT North America CCO Jeff Benjamin Leaves to Start Own 'Creative Venture' New Global CCO Matt Eastwood to Step in While Agency Seeks Successor By Ann-Christine Diaz, Published on August 04, 2014 1 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.