[Form 4] T-Mobile US, Inc. Insider Trading Activity

Rhea-AI Filing Summary

T-Mobile US Chief People Officer Deeanne King reported equity compensation transactions. On February 15, 2026, she acquired 9,421 and 4,432 shares of common stock through grants and awards at $0.00 per share, reflecting restricted and performance-based stock units.

To satisfy tax liabilities on the vesting of these awards, 3,107.865 and 1,743.992 shares were withheld at a price of $219.50 per share, which the disclosure notes were not open market transactions. After these mixed acquisitions and tax-related dispositions, she directly owned 64,713.2338 shares of T-Mobile US common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

King Deeanne

(Last) (First) (Middle)

C/O T-MOBILE US, INC.

12920 SE 38TH STREET

(Street)

BELLEVUE WA 98006

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
T-Mobile US, Inc. [ TMUS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief People Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/15/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/15/2026		A		9,421(1)	A	$0	65,133.0908	D
Common Stock	02/15/2026		F		3,107.865(2)	D	$219.5	62,025.2258	D
Common Stock	02/15/2026		A		4,432(3)	A	$0	66,457.2258	D
Common Stock	02/15/2026		F		1,743.992(4)	D	$219.5	64,713.2338	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents restricted stock units granted under the issuer's 2023 Incentive Award Plan, (the "Plan"); one-third of the units vest on each of February 15, 2027, February 15, 2028 and February 15, 2029, subject to the terms of the Plan and related award agreement.

2. Represents shares withheld for payment of taxes on vesting of restricted stock units; not an open market transaction.

3. Represents performance-based restricted stock units earned under the issuer's 2015 Sprint Omnibus Incentive Plan, that vested on February 15, 2026 based on the Company's relative total shareholder return during the three-year period ending February 15, 2026.

4. Represents shares withheld for payment of taxes on vesting of performance-based restricted stock units; not an open market transaction.

Remarks:

	/s/ Frederick Williams, Attorney-in-Fact	02/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did T-Mobile US (TMUS) executive Deeanne King report in this Form 4?

Deeanne King reported equity compensation activity, including new stock grants and tax-related share withholdings. She received stock awards at no cost and had some shares withheld to cover taxes on vesting, with no open market purchases or sales disclosed.

How many T-Mobile US (TMUS) shares did Deeanne King acquire in the reported grants?

She acquired 9,421 and 4,432 shares of T-Mobile US common stock through stock grants and awards. These reflect restricted and performance-based stock units provided under company incentive plans, increasing her direct equity stake before tax-related share withholdings.

Were any of Deeanne King’s T-Mobile US (TMUS) transactions open market buys or sells?

No open market buys or sells were reported. Shares disposed of under code F were specifically identified as withheld to pay taxes on vesting of restricted and performance-based stock units, using a set price per share for that tax withholding.

At what price were T-Mobile US (TMUS) shares withheld for Deeanne King’s tax obligations?

Shares were withheld at $219.50 per share to satisfy tax liabilities on vesting awards. This price was used to determine how many shares to withhold for taxes rather than reflecting an open market sale or discretionary trading activity.

How many T-Mobile US (TMUS) shares did Deeanne King directly own after these Form 4 transactions?

Following the reported grants and tax-related share withholdings, Deeanne King directly owned 64,713.2338 shares of T-Mobile US common stock. This figure reflects her updated direct holdings after all acquisitions and dispositions on February 15, 2026.