GroupM U.S. Chief Investment Officer Matt Sweeney to Exit

Longtime GroupM executive Matt Sweeney has stepped down from his role, ADWEEK has learned. Sweeney has been with GroupM since 2014, when he joined the company as senior vice president of client engagement at programmatic trading desk Xaxis. Over his decadelong tenure with the group, he succeeded to CEO of Xaxis and then to chief…
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