John Montgomery joined Ogilvy in 1989 in South Africa as media director and launched MindShare in that country. In his final three years 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, Montgomery moved to Amsterdam as CEO, Ogilvy Group Netherlands. In 2004 Montgomery moved to New York to lead mOne in North America, the interactive media practice for MindShare and Ogilvy and was subsequently appointed as global CEO of MindShare Interaction in 2006. He was appointed as COO of GroupM Interaction for North America in 2008. As part of his portfolio, Montgomery leads GroupM’s privacy and data strategy for digital and works closely with industry bodies that help set policy in these areas.
