Castree Out As GroupM North America Chief

Less than a year after being named CEO of GroupM North America, Tim Castree is out.

Global CEO Christian Juhl will oversee the role at least on an interim basis.

Castree was named GroupM’s North American chief in December 2018, succeeding Brian Lesser, who left to take a role at AT&T.

Castree joined GroupM in late 2016 as global CEO of MEC and the following year was tapped to run GroupM’s then fledgling Wavemaker unit, which combined GroupM’s MEC and Maxus units.



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