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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 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): April 24, 2025
T-MOBILE US, INC.
(Exact Name of Registrant as Specified in Charter)

Delaware |  | 1-33409 |  | 20-0836269
(State or other jurisdiction |  | (Commission File Number) |  | (I.R.S. Employer
of incorporation) |  |  |  | Identification No.)

12920 SE 38th Street
Bellevue, Washington
(Address of principal executive offices)
98006-1350
(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
3.850% Senior Notes due 2036 |  | TMUS36 |  | 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

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 2.02 — Results of Operations and Financial Condition
On April 24, 2025, T-Mobile US, Inc. (the “Company”) issued a press release announcing the financial and operating results of the Company for the quarter ended March 31, 2025. The text of the press release and accompanying Investor Factbook are furnished as Exhibits 99.1 and 99.2 and incorporated herein by reference.
The information in Item 2.02 to this Current Report on Form 8-K, including Exhibits 99.1 and 99.2, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as expressly set forth by specific reference in such filing.
Item 9.01 — Financial Statements and Exhibits
(d) Exhibits:

Exhibit |  | Description
99.1 |  | Press release, dated April 24, 2025, entitled "T-Mobile Leads the Industry Once Again With Continued Durable Customer Growth, Including Best Ever Q1 Postpaid Gross and Net Additions, Translating to Outstanding Financial Growth"
99.2 |  | Investor Factbook of T-Mobile US, Inc. F irst Quarter 202 5 Results
104 |  | Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)

|  | 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. |
April 24, 2025 |  | /s/ Peter Osvaldik |
|  | Peter Osvaldik Executive Vice President and Chief Financial Officer |