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 Havas Global CEO David Jones Leaves to Launch Tech Startup Chairman Yannick Bollore Adds Group CEO Role; Andrew Benett Moves Up to Global CEO of Ad Network By Laurel Wentz, Published on January 08, 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.