brian wieser

Brian Wieser to leave GroupM
Dec 7, 2022
Alison Weissbrot

Brian Wieser to leave GroupM

EXCLUSIVE: The prolific industry analyst has been president of global business intelligence at the media buying giant for nearly three years.

Brian Wieser: Bad behaviour makes working with Facebook harder
Nov 21, 2018
Thomas Moore

Brian Wieser: Bad behaviour makes working with Facebook harder

Marketers may think twice about the platform after revelations in The New York Times, according to analyst.

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