On June 13, 2018, the Board of Directors of T-Mobile US, Inc. ratified the appointment of G. Michael Sievert as the Company's President. Effective immediately, Mr. Sievert has assumed the office of President from John J. Legere, who continues to serve as the Company's Chief Executive Officer. Mr. Sievert has served as a member of the Board since February 2018 and the Company's Chief Operating Officer since February 2015, where he is responsible for guiding all customer-facing operations across the business, including marketing, product development, retail management, sales and customer care for all of the Company's direct and indirect channels and each of the Company's brands. From April 2013 to February 2015, Mr. Sievert served as the Company's Executive Vice President and Chief Marketing Officer. Mr. Sievert also serves on the Board of Directors at Shaw Communications in Canada. In the past, he has served on the boards of Rogers Wireless in Canada, Switch & Data Corporation, and a number of technology start-ups.