McCann CEO Harris Diamond Is Retiring, Handing Reins to COO Bill Kolb

His retirement marks the end of an 8-year run at the IPG agency

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After leading McCann Worldgroup for nearly a decade, chairman and CEO Harris Diamond is retiring at the end of this year.

Bill Kolb, who was named chief operating officer of the global agency network in June, will succeed Diamond.

Kolb is a McCann veteran who’s held a number of positions at the IPG-owned network throughout his career. Prior to becoming chief operating officer, he served as global president of diversified agencies at McCann and chairman and CEO of Commonwealth//McCann, the network’s agency dedicated to Chevrolet.

Prior to that, he held a number of leadership roles at MRM and Momentum, both of which are agencies under the McCann umbrella.

“Bill

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