TMUS: 10-Q financial filing

tmus-20260930 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2026 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33409 T-MOBILE US, INC. (Exact name of registrant as specified in its charter) Delaware 20-0836269 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 12920 SE 38th Street Bellevue , Washington (Address of principal executive offices) 98006-1350 (Zip Code) (425) 378-4000 (Registrant’s telephone number, including area code) 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 3.500% Senior Notes due 2037 TMUS37 The NASDAQ Stock Market LLC 3.900% Senior Notes due 2038 TMUS38 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 wh