• IPG is one of the largest advertising companies, with top agencies like McCann, FCB, and UM.
• The company outperformed its rivals in 2020 on growth in data, tech, healthcare, and ad buying.
• Insider identified the 16 most important execs helping CEO Philippe Krakowsky keep the momentum going.

Eileen Kiernan, global CEO of UM

Eileen Kiernan joined media agency UM in 2012, rising to global CEO in 2019. UM, a 3,000-person global network, is a big part of the IPG portfolio and was a key growth driver in 2020.

Kiernan worked closely with Krakowsky while he was at Mediabrands and she was global president of J3, UM’s dedicated Johnson & Johnson unit, and they continue to meet weekly to discuss business.

Krakowsky was particularly interested in how Kiernan and UM used data and analytics in campaigns for Johnson & Johnson, and continues to seek her advice on major company decisions such as the Acxiom acquisition.

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