Omnicom Group, Inc.
Nielsen Holdings Plc
AirMedia Group, Inc.
InnerWorkings, Inc.
The Trade Desk, Inc.
National CineMedia, Inc.
Clear Channel Outdoor Holdings, Inc.
MDC Partners, Inc.
Interpublic Group of Cos., Inc.
WPP Plc
Eastside Distilling, Inc.
Harte-Hanks, Inc.
AutoWeb, Inc.
Integrated Media Technology Ltd.
Social Reality, Inc.
iClick Interactive Asia Group Ltd.
Monaker Group, Inc.
QuinStreet, Inc.
Quotient Technology, Inc.
Groupon, Inc.
eXp World Holdings, Inc.
Boston Omaha Corp.
ChinaNet Online Holdings, Inc.
Insignia Systems, Inc.