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): September 18, 2024

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

Not Applicable

(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, $0.00001 par value 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
3.850% Senior Notes due 2036	TMUS36	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 7.01 — Regulation FD Disclosure.

On September 18, 2024, T-Mobile US, Inc. (the “Company”) hosted a Capital Markets Day event. Members of the Company’s senior leadership team discussed the Company’s plans to leverage its industry-leading network to unlock future growth from its existing and new businesses over the next three years.

The event is accessible via webcast on the Company’s Investor Relations website at http://investor.t-mobile.com. A replay of the webcast along with presentation materials will be available on the Investor Relations website at the conclusion of the event.

A copy of the press release relating to the Capital Markets Day is attached hereto as Exhibit 99.1. The information contained in Item 7.01, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), 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, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.	Description
99.1	Press Release dated September 18, 2024 (furnished under Item 7.01).
104	Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document)

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.
September 18, 2024	/s/ Peter Osvaldik
	Peter Osvaldik
	Executive Vice President and Chief Financial Officer