- WPP Plc (Ogilvy
Y&R
Grey)
- The Interpublic Group of Companies Inc. (McCann Worldgroup
MullenLowe U.S.)
- Omnicom Group Inc (BBDO
DDB Worldwide)
- Dentsu Aegis Network Ltd.?(Dentsu Inc.)
- MDC Partners Inc.
- Lamar Advertising Company (Lamar Media Corp.)
- Publicis Groupe SA
- Wieden + Kennedy Inc
- Havas SA
- Droga5 LLC