T-Mobile stockholders approve 2023 Incentive Award Plan and amended ESPP

Proposal 3 – Advisory Vote to Approve the Compensation Provided to the Company’s Named Executive Officers for 2022. The compensation provided to the Company’s named executive officers for 2022 was approved by an advisory vote, as set forth below: For Against Abstain Broker Non-Votes 1,062,485,902 36,129,647 273,107 31,465,166

Proposal 2 – Ratification of the Appointment of Deloitte & Touche LLP. The appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the Company’s fiscal year ending December 31, 2023 was ratified by the votes set forth below: For Against Abstain Broker Non-Votes 1,129,066,920 611,595 675,307 —

Proposal 4 – Advisory Vote on the Frequency of Future Advisory Votes to Approve the Compensation Provided to the Company’s Named Executive Officers. The advisory vote on the frequency of future advisory votes to approve the compensation provided to the Company’s named executive officers received the following votes: 1 Year 2 Years 3 Years Abstain Broker Non-Votes 399,323,703 216,074 699,146,155 202,724 31,465,166

Proposal 5 – Approval of the T-Mobile US, Inc. 2023 Incentive Award Plan. The Incentive Plan was approved by the votes set forth below: For Against Abstain Broker Non-Votes 1,061,029,851 37,663,647 195,158 31,465,166

Proposal 6 – Approval of the T-Mobile US, Inc. Amended and Restated 2014 Employee Stock Purchase Plan. The ESPP was approved by the votes set forth below: For Against Abstain Broker Non-Votes 1,098,229,482 507,678 151,496 31,465,166

Proposal 1 – Election of Directors. The following 13 director nominees were elected as directors, each to hold office until the Company’s 2024 Annual Meeting of Stockholders, or until his/her successor is elected and qualified, by the votes set forth below: Director Nominee For Withhold Broker Non-Votes André Almeida 951,819,124 147,069,532 31,465,166 Marcelo Claure 944,361,965 154,526,691 31,465,166 Srikant M. Datar 1,070,523,539 28,365,117 31,465,166 Srinivasan Gopalan 932,092,760 166,795,896 31,465,166 Timotheus Höttges 944,581,043 154,307,613 31,465,166 Christian P. Illek 881,658,854 217,229,802 31,465,166 Raphael Kübler 880,626,429 218,262,227 31,465,166 Thorsten Langheim 952,100,760 146,787,896 31,465,166 Dominique Leroy 883,218,921 215,669,735 31,465,166 Letitia A. Long 1,017,469,978 81,418,678 31,465,166 G. Michael Sievert 989,403,292 109,485,364 31,465,166 Teresa A. Taylor 970,288,528 128,600,128 31,465,166 Kelvin R. Westbrook 1,049,325,503 49,563,153 31,465,166