T-Mobile US, Inc. announced leadership team changes including the appointment of Chris Sambar as Chief Enterprise Officer, effective by October 14, 2026. André Almeida will transition to Chief Marketing, Brand, and Broadband Officer, while Dr. John Saw will expand his role to include product engineering and cybersecurity. Michael J. Katz, the current Chief Business and Product Officer, is stepping down from his position effective July 8, 2026, but will remain as a strategic advisor through December 2026. T-Mobile US, Inc. is a telecommunications company providing wireless and broadband services.