Ron GuirguisRon Guirguis, who headed Edelman's corporate and public affairs practice, is moving to MSLGroup on Sept. 14 as CEO of US operations.

With more than 20 years of experience, Guirguis has tackled clients in the healthcare, defense, financial services, food & beverage, aerospace and natural resources businesses.

He will report to CEO Guillaume Herbette, who said Guirguis' is the "natural choice" to take MSLGroup to the next level in the US.

Before joining Edelman in 2012, Guirguis spent 13 years at FleishmanHillard, working as managing director for PA in Canada and then senior VP/GM of the New York office.