Brian Wieser to leave GroupM

In brief

GroupM’s global president of business intelligence Brian Wieser is leaving WPP’s advertisement investment arm.

Wieser confirmed the news in an email to The Media Leader. He intends to depart GroupM in January.

Kate Scott-Dawkins, who authored GroupM’s latest ad industry forecast, will succeed Wieser.

Wieser declined to offer details on his next venture.