The Martin Agency Hires Karen Costello to Lead Mondelez Account as Executive Creative Director

The Martin Agency hired Karen Costello as executive creative director, tasking her with leading the agency's Mondelez account, which includes brands such as Oreo, Chips Ahoy! and Ritz. "Karen is one of the top creative leaders in the industry. But she is hardly one to brag. So I will for her. She's already making a...

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