Lisa Donohue

John Montgomery

COO, Interaction
GroupM Interaction


John joined Ogilvy in 1989 in South Africa as Media Director and launched Mindshare in that country. In the final three years he spent in South Africa, he was Managing Director of the Ogilvy Group in Cape Town, one of the most creative agencies in the Ogilvy Worldwide network. In 2001, John moved to Amsterdam as CEO, Ogilvy Group Netherlands.

In 2004, John relocated to New York to lead the Interactive media practice for Mindshare and Ogilvy and was subsequently appointed as Global CEO of Mindshare Interaction in 2006, where he established the digital practice for Mindshare worldwide. In 2009, he took on the role of COO of GroupM Interaction for North America, where he leads the digital data strategy, innovation and policy for the group.

John is seen as one of the digital innovators in the field and speaks regularly on issues such as Programmatic Buying, Data Strategy and Privacy.

As part of his role, John has represented the advertising industry to the U.S. Senate Commerce Committee and the White House and is on the Internet Steering Committee for the WEF. John is also Chairman of the 4A’s Media Leadership Council.

In 2013, John was nominated by Adweek as one of the 12 smartest people in media and won a Media All-Star Award from Media Post.

GroupM Interaction is now a network of more than 750 digital specialists across North America. It serves as the parent company to WPP media agencies including MediaCom, Maxus, MEC, Metavision and Mindshare.