Senecal will carry on as president and chief executive of MDC even after taking on the new global chief executive role at Crispin Porter & Bogusky. She will not continue as global executive chairman of KBS, another MDC agency, however.
As chief executive of Crispin Porter & Bogusky, Senecal will oversee the agency’s global growth and manage the coordination between its eight international offices.
Senecal said: "It’s an honour to be asked by Chuck Porter to work alongside him and the CP&B leadership team. I look forward to playing a significant role in the global growth of the agency, by working with the exceptional talent across offices."
Porter, the agency’s chairman, said: "Lori understands and loves this agency. She shares our values and passion, and she brings an extraordinary level of management experience and expertise.
"Everything I’m not good at, she is. And along with Andrew Keller, Steve Erich, Richard Pinder and our new creative leaders, I think we have a global ‘A team’."
Before joining KBS in 2009, Senecal was the president of McCann New York, having worked her way up from chief innovation officer.