One of the “100 people who make advertising great” according to the 4A’s, Christian is Global CEO of GroupM where he leads 35,000 people passionate about media, consumerism and commerce. A member of WPP’s executive leadership team and a key player in WPP becoming a creative transformation company, he is ensuring that GroupM continues to be a powerful growth driver for WPP.
Christian’s mission is the purposeful application of GroupM’s scale across partnerships, data and technology so the clients of WPP’s media agencies benefit from breakthrough intelligence and capabilities. With $48.3 billion in media investment billings across 80 markets worldwide, GroupM is the largest media investment group. GroupM has three of the world’s top five media agencies and a range of businesses innovating in advanced TV, AI-driven programmatic, eCommerce and more.
Prior, Christian served as global CEO of GroupM’s Essence, a data and measurement-driven global agency. There, he was instrumental in driving the agency's meteoric growth that saw its billings increase more than five-fold while maintaining an attrition rate half of the industry average.
During his tenure, Essence won Mediapost’s OMMA Agency of the Year and Adweek’s Breakthrough Media Agency of the Year. Christian joined Essence in 2013 to lead North America after spending 14 years at Razorfish. Ad Age has also recognized Christian as a “Media Maven.”