The North American CEO of GroupM Tim Castree has stepped down from the network, after starting in the role last December.
According to reports in Business Insider, Castree’s departure is effective immediately.
“We thank Tim for his contributions and wish him the very best,” a GroupM spokesperson told the publication.
Castree was appointed to the North American CEO role last year, after joining WPP in 2017.
He initially came to WPP to oversee the merger of MEC and Maxus to form Wavemaker, where he served as global CEO.
Castree’s departure follows large-scale restructuring at GroupM.
The network appointed former global CEO of GroupM’s agency Essence Christian Juhl as global CEO in July, following the departure of Kelly Clark.
Clark had been tasked with streamlining the organisation and reducing costs, with Castree also working on what was called ‘Project Fit’.
Business Insider said Clark’s departure left Castree’s position with the network “less secure”.
The reports said sources familiar with the matter said Castree’s departure was announced on Monday afternoon.