Brian Wieser joins GroupM as Global President, Business Intelligence

GroupM, WPP’s world-leading media investment group, announced that Brian Wieser is joining its senior leadership team as Global President, Business Intelligence. Starting this week and reporting to Global Ceo Kelly Clark, Wieser will drive and expand GroupM’s thought leadership practice. He will collaborate with GroupM’s agencies and WPP’s broader network to gather, analyze and distribute actionable marketplace intelligence that gives clients insights on markets, audiences, partners and platforms, and supply and demand dynamics.