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 Facebook Taps Former Univision Exec David Lawenda As U.S. Sales Chief Mr. Lawenda Takes Over the Role Vacated by Tom Arrix By Cotton Delo, Published on October 01, 2013 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.