GroupM is a privately owned, U.S.-based company founded in 2003, with approximately 16,770 employees. The company functions as a media investment group within the multinational holding company WPP plc, specializing in advertising services.
On April 3, 2026, Damian Blackden retired from WPP Media as Global Chief Strategy Officer, concluding a 37-year career where he became a central figure in global agency strategy and digital transformation. He previously led the centralization of Google's annual global media strategy and buying arrangements into GroupM as President of Business Strategy & Operations. Previously, on April 2, WPP Media placed in the top three of the UK media new-business rankings for 2025. Also on April 2, Wipro Consumer Care & Lighting consolidated its media mandate with Wavemaker, a WPP Media agency, covering strategy, investment, and activation across platforms. Earlier, on April 1, WPP Media executives stated that Agentic AI is poised to redefine media planning by enhancing speed and efficiency as brands navigate increasingly complex data-driven ecosystems.
GroupM's customers primarily consist of media and TV services and RTB and programmatic companies. Examples of GroupM's customers include Criteo and iWant. Examples of GroupM's suppliers include IRIS.TV, PubMatic and Magnite.
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