Birge will continue to oversee the Sprint Nextel account as well as the day-to-day running of the agency.
He joined TBWA in 2001 and was responsible for leading strategy and development.
A year later, he was appointed as the director of client services and integration before taking over the Sprint Nextel business in 2003.
Robert LePlae, the president and chief executive of TBWA\North America, said: "Robert's leadership and ability to deliver big marketing solutions across all channels of communication has garnered him the respect of the team."
This article was first published on Campaign