2015 rank: 47
2014 rank: 44
At the end of 2014, Margery Kraus wrapped a restructure of senior staff at the agency she founded and named international president Brad Staples to succeed her as CEO.
"We are now a much more global company and wanted to run the organization in a more global way," she said at the time. Kraus moved into the role of executive chairman to focus on clients and mentoring staff, but is still heavily involved in everything at the agency.