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 Razorfish Chairman Clark Kokich Makes the Move From Agency to Ad Tech Exec Had Been at Digital Shop Since 1999 By Alexandra Bruell, Published on September 25, 2013 2 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. Register Now Already a member? Log in.