TMUST-Mobile US

On June 12, 2026, Daniel J. Drobac, the Company’s Vice President and Chief Accounting Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell shares of the Company’s common stock he will acquire through May 3, 2027, upon the vesting of certain time-based restricted stock unit awards, up to a total of 2,347 shares, subject to certain conditions. The duration of this trading plan is 325 days.

On May 19, 2026, Srinivasan Gopalan, the Company’s President and Chief Executive Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell shares of the Company’s common stock he will acquire through March 1, 2027, upon the vesting of certain time-based restricted stock unit awards, up to a total of 35,380 shares, subject to certain conditions. The duration of this trading plan is 286 days.

On May 7, 2026, John C. Saw, the Company’s Chief Technology Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to a total of 11,000 shares of the Company’s common stock, subject to certain conditions. The duration of this trading plan is 279 days.

On March 13, 2026, Claure Mobile LLC, an entity affiliated with Marcelo Claure, a director of the Company, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 620,400 shares of the Company’s common stock, subject to certain conditions. The duration of this trading plan is 413 days.

On March 9, 2026, Deeanne King, the Company’s Chief People Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 20,868 shares of the Company’s common stock, subject to certain conditions. The duration of this trading plan is 365 days.

On February 23, 2026, Mark W. Nelson, the Company’s Chief Legal Officer and General Counsel, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell the shares of the Company’s common stock he will acquire on February 15, 2027, upon the vesting of certain time-based restricted stock unit awards and PRSUs, up to a total of 23,596 shares assuming PRSUs will vest at maximum value, subject to certain conditions. The duration of this trading plan is 368 days.

On February 19, 2026, Jonathan Freier, the Company’s Chief Operating Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 23,739 shares of the Company’s common stock he acquired on February 15, 2026, upon the vesting of certain time-based restricted stock unit awards and performance-based restricted stock unit awards (“PRSUs”), subject to certain conditions. The duration of this trading plan is 315 days.

On December 4, 2025, Michael J. Katz, the Company’s Chief Business and Product Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell, subject to certain conditions, up to 15,000 shares of the Company’s common stock. The duration of this trading plan is 393 days.

On December 2, 2025, Claure Mobile LLC, an entity affiliated with Marcelo Claure, a director of the Company, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell, subject to certain conditions, up to 1,250,000 shares of the Company’s common stock. The duration of this trading plan is 376 days.

On August 7, 2025, Ulf Ewaldsson, the Company’s former President, Technology, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell, subject to certain conditions (a) up to 7,500 shares of the Company’s common stock, and (b) all of the shares of the Company’s common stock he will acquire on February 15, 2026, upon the vesting of certain time-based restricted stock unit awards, up to a total of 14,868 shares. The duration of this trading plan is 270 days.

On March 10, 2025, Jonathan Freier, the Company’s President, Consumer Group, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 21,155 shares of the Company’s common stock, subject to certain conditions. The duration of this trading plan is 296 days.

On March 6, 2025, Deeanne King, the Company’s Executive Vice President and Chief People Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 18,628 shares of the Company’s common stock, subject to certain conditions. The duration of this trading plan is 366 days.

On March 4, 2025, Peter Osvaldik, the Company’s Chief Financial Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 10,000 shares of the Company’s common stock, subject to certain conditions. The duration of this trading plan is 336 days.

On February 20, 2025, Mark W. Nelson, the Company’s Executive Vice President and General Counsel, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell all of the shares of the Company’s common stock he will acquire on February 17, 2026, upon the vesting of certain time-based restricted stock unit awards and performance-based restricted stock unit awards (“PRSUs”), up to a total of 42,525 shares assuming PRSUs will vest at maximum value, subject to certain conditions. The duration of this trading plan is 372 days.

On December 13, 2024, Raul Marcelo Claure, a member of the Company’s Board of Directors, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 620,400 shares of the Company’s common stock between April 12, 2025, and December 31, 2025, subject to certain conditions. The duration of this trading plan is 383 days.

On November 26, 2024, Peter Osvaldik, the Company’s Chief Financial Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 25,000 shares of the Company’s common stock between February 27, 2025, and November 28, 2025, subject to certain conditions. The duration of this trading plan is 367 days.

On November 25, 2024, Ulf Ewaldsson, the Company’s President, Technology, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 19,407 shares of the Company’s common stock on February 21, 2025, subject to certain conditions. The duration of this trading plan is 89 days.

On November 14, 2024, G. Michael Sievert, President and Chief Executive Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 180,000 shares of T-Mobile US, Inc. common stock between February 25, 2025, and November 18, 2025, subject to certain conditions. The duration of this trading plan is 370 days.

On November 12, 2024, Callie Field, President, Business Group, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell on February 18, 2025, all of her T-Mobile US, Inc. common stock to be acquired on February 15, 2025, upon the vesting of certain time-based restricted stock unit awards and performance-based restricted stock unit awards (“PRSUs”), up to a total of 43,582 shares assuming PRSUs will vest at maximum value, subject to certain conditions. The duration of this trading plan is 99 days.

On November 6, 2024, Michael Katz, President, Marketing, Strategy and Products, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 2,500 shares of the Company’s common stock between May 15, 2025, and December 31, 2025, and up to 6,204 shares of the Company’s common stock to be acquired on February 15, 2025, upon the vesting of certain time-based restricted stock unit awards, between February 18, 2025, and December 31, 2025, subject to certain conditions. The duration of this trading plan is 420 days.

On May 7, 2024, Deeanne King, the Company’s Executive Vice President and Chief People Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to (a) 1,535 shares of the Company’s common stock she will acquire upon the exercise of certain options that were granted on August 2, 2017 and May 24, 2014, respectively, subject to certain conditions, and (b) 13,902 shares of the Company’s common stock acquired between March 4, 2022 and March 4, 2024, subject to certain conditions. The duration of this trading plan is 367 days.

On February 21, 2024, Jonathan Freier, the Company’s President, Consumer Group, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 30,000 shares of the Company’s common stock between May 23, 2024, and October 31, 2024, subject to certain conditions. The duration of this trading plan is 253 days.

On February 21, 2024, Mark Nelson, the Company’s Executive Vice President and General Counsel, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell all of the Company’s common stock he acquires on October 11, 2024, and February 15, 2025, respectively, upon the vesting of certain time-based restricted stock unit awards and performance-based restricted stock unit awards (“PRSUs”), for a total of up to 167,923 shares if the PRSUs vest at maximum value, subject to certain conditions. The duration of this trading plan is 360 days.

On November 21, 2023, Peter Osvaldik, Executive Vice President and Chief Financial Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 20,000 shares of T-Mobile US, Inc. common stock between February 20, 2024, and November 15, 2024, subject to certain conditions

On November 16, 2023, Callie Field, President, Business Group, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell all of her T-Mobile US, Inc. common stock to be acquired on March 4, 2024, upon the vesting of certain time-based restricted stock unit awards and performance-based restricted stock unit awards (“PRSUs”), up to a total of 26,407 shares assuming PRSUs will vest at maximum value, subject to certain conditions. The duration of this trading plan is 134 days.

On November 16, 2023, G. Michael Sievert, President and Chief Executive Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 160,000 shares of T-Mobile US, Inc. common stock between February 27, 2024, and November 12, 2024, subject to certain conditions

On November 9, 2023, Michael Katz, President, Marketing, Strategy and Products, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 23,748 shares of T-Mobile US, Inc. common stock between February 15, 2024, and December 31, 2024, subject to certain conditions

On September 14, 2023, Dara Bazzano, Senior Vice President and Chief Accounting Officer, adopted a trading plan intended to satisfy Rule 10b5-1(c) to sell up to 3,953 shares of T-Mobile US, Inc. common stock between December 13, 2023, and March 15, 2024, for a total duration of 93 days, subject to certain conditions.

On September 13, 2023, Deeanne King, Executive Vice President and Chief People Officer, adopted a trading plan intended to satisfy Rule 10b5-1(c) to sell up to 24,328 shares of T-Mobile US, Inc. common stock between December 13, 2023, and September 12, 2024, for a total duration of 274 days, subject to certain conditions.