TMUS: Leadership change · Company disclosure

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On September 3, 2026, T-Mobile US, Inc. (“T-Mobile” or the “Company”) announced that Peter Osvaldik, Chief Financial Officer of the Company, would retire from his role as Chief Financial Officer in February 2027. Mr. Osvaldik will remain as the Company’s Strategic Advisor through July 1, 2027, which is the end of his previously announced contract extension, to aid in the extended transition of responsibilities. T-Mobile expects that Jessica Uhl, who will commence employment as the Company’s Chief Financial Officer Designate in mid-September 2026, will serve as Chief Financial Officer upon Mr. Osvaldik’s retirement. Ms. Uhl, age 58, served as President of GE Vernova from January 2024 to May 2025. From March 2017 to March 2022, she served as Chief Financial Officer of Shell plc. Prior to that, Ms. Uhl held various finance leadership positions at Shell plc beginning in 2004, including Executive Vice President of Finance for Integrated Gas and Upstream Americas. In addition, Ms. Uhl currently serves on the boards of Fervo Energy, RMI, formerly Rocky Mountain Institute, OpenMinds, Inc. and Mission Possible Partnership. She also serves on the Global Leadership Council of the Global Energy Alliance for People and Planet, as an advisory board member for the Columbia Center on Global Energy Policy, and as a Senior Advisor with Three Cairns Group. Ms. Uhl previously served on the boards of Shell plc, Goldman Sachs and General Electric and as a strategic advisor to Breakthrough Energy. Ms. Uhl received a Bachelor’s degree in Political Economy from the University of California, Berkeley and a Master of Business Administration d