GroupM’s Irwin Gotlieb Resigns as Global Chairman Joanna Padovano Tong April 7, 2018 Top Stories Irwin Gotlieb is stepping down as global chairman of GroupM as he moves into a senior advisory position with WPP. The content you are trying to access is only available to members. Log In Register GroupM Irwin Gotlieb WPP 2018-04-07 Joanna Padovano Tong Share