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 Omnicom Revenue Grows, but Publicis Merger May Slide to Third Quarter Including Merger Preparation Costs, Net Income for Last Year Slipped to $991 Million By Alexandra Bruell, Published on February 11, 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.