T-Mobile says Mike Sievert will become CEO in May, following the end of John Legere’s contract.
The company said Monday that the move is part of its succession plan.
Legere will remain with the Bellevue, Washington-company as a board member. Sievert, who has worked with Legere for the past seven years, currently serves as president, chief operating officer and a director.
T-Mobile is in the midst of combining with Spring in a $26.5 billion deal. Federal regulators have approved the deal, but attorneys general of 15 states and the District of Columbia aim to block it, saying it will raise prices for consumers. A trial is to start in December.
T-Mobile has already made promises to get the deal done, including providing coverage in rural areas and not raising prices for three years.
Legere joined T-Mobile as its CEO in 2012 and has been a colorful personality on Twitter and elsewhere promoting the wireless service since then.
“I’m not going anywhere soon. This is all part of a multiyear plan,” he wrote on the social media service, where he has 6.5 million followers.