SEC EDGAR · 8-K
8-K – 2026-03-27 – d124064d8k.htm
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8-K false 0001283699 0001283699 2026-03-26 2026-03-26 0001283699 tmus:CommonStockParValue0.00001PerShareMember 2026-03-26 2026-03-26 0001283699 tmus:A3.550SeniorNotesDue2029Member 2026-03-26 2026-03-26 0001283699 tmus:M3.700SeniorNotesDue20322Member 2026-03-26 2026-03-26 0001283699 tmus:A3.150SeniorNotesDue2032Member 2026-03-26 2026-03-26 0001283699 tmus:M3.200SeniorNotesDue20321Member 2026-03-26 2026-03-26 0001283699 tmus:M3.625SeniorNotesDue20355Member 2026-03-26 2026-03-26 0001283699 tmus:A3.850SeniorNotesDue2036Member 2026-03-26 2026-03-26 0001283699 tmus:M3.900SeniorNotesDue20383Member 2026-03-26 2026-03-26 0001283699 tmus:A3.500SeniorNotesDue2037Member 2026-03-26 2026-03-26 0001283699 tmus:A3.800SeniorNotesDue2045Member 2026-03-26 2026-03-26 0001283699 tmus:M6.250SeniorNotesDue20694Member 2026-03-26 2026-03-26 0001283699 tmus:A5.500SeniorNotesDueMarch2070Member 2026-03-26 2026-03-26 0001283699 tmus:A5.500SeniorNotesDueJune2070Member 2026-03-26 2026-03-26 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 26, 2026 T-MOBILE US, INC. (Exact name of registrant as specified in its charter) Delaware 1-33409 20-0836269 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 12920 SE 38th Street Bellevue , Washington 98006-1350 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code: ( 425 ) 378-4000 (Former name or former address, if changed since last report.) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, par value $0.00001 per share TMUS The NASDAQ Stock Market LLC 3.550% Senior Notes due 2029 TMUS29 The NASDAQ Stock Market LLC 3.700% Senior Notes due 2032 TMUS32 The NASDAQ Stock Market LLC 3.150% Senior Notes due 2032 TMUS32A The NASDAQ Stock Market LLC 3.200% Senior Notes due 2032 TMUS32B The NASDAQ Stock Market LLC 3.625% Senior Notes due 2035 TMUS35 The NASDAQ Stock Market LLC 3.850% Senior Notes due 2036 TMUS36 The NASDAQ Stock Market LLC 3.900% Senior Notes due 2038 TMUS38 The NASDAQ Stock Market LLC 3.500% Senior Notes due 2037 TMUS37 The NASDAQ Stock Market LLC 3.800% Senior Notes due 2045 TMUS45 The NASDAQ Stock Market LLC 6.250% Senior Notes due 2069 TMUSL The NASDAQ Stock Market LLC 5.500% Senior Notes due March 2070 TMUSZ The NASDAQ Stock Market LLC 5.500% Senior Notes due June 2070 TMUSI The NASDAQ Stock Market LLC Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On March 26, 2026, Abdurazak Mudesir notified the Board of Directors (the “Board”) of T-Mobile US, Inc. (the “Company”) of his decision to resign from the Board and from the Nominating, Corporate Governance and Compliance Committee of the Board, effective March 31, 2026. Mr. Mudesir’s resignation is not the result of any disagreement between the Company and him on any matter relating to the Company’s operations, policies or practices. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. T-MOBILE US, INC. Date: March 27, 2026 /s/ Peter Osvaldik Name: Title: Peter Osvaldik Chief Financial Officer