[Form 4] DEUTSCHE TELEKOM AG Insider Trading Activity

Rhea-AI Filing Summary

Deutsche Telekom reported multiple open-market sales of T-Mobile US (TMUS) common stock under a 10b5-1 trading plan adopted on 06/12/2025. Between 10/06/2025 and 10/07/2025, the reporting group disposed of a total of 128,852 shares in a series of transactions at weighted-average prices ranging roughly from $222.32 to $228.71 per share. After the sales, the combined amount of beneficially owned common stock reported on the Form 4 declined to 628,104,177 shares for the last line reported.

The report lists multiple Deutsche Telekom entities and officials as reporting persons and disclaims beneficial ownership except to the extent of any pecuniary interest. The filings note that the sales were executed pursuant to the 10b5-1 plan and that detailed per-price breakdowns are available upon written request.

Positive

• Transactions executed under a 10b5-1 plan adopted on 06/12/2025, providing planned-trade transparency
• Full weighted-price ranges disclosed with offer to provide per-trade breakdowns on request

Negative

• Insider group sold 128,852 TMUS shares on 10/06/2025–10/07/2025, reducing reported holdings
• Beneficial ownership remains concentrated: last reported line shows 628,104,177 shares held

Insights

Corporate Governance Analyst

Large holder used a rule-based plan to sell a modest block of TMUS shares across two days.

The transactions were executed under a 10b5-1 plan adopted on 06/12/2025, which provides an affirmative defense for planned, pre‑arranged trades. The filing shows consolidated reporting by multiple Deutsche Telekom entities and lists senior DT executives as directors-by-deputization.

The main governance implication is transparency: the plan and weighted price ranges are disclosed, and the holder offered to provide per‑trade price details on request. Investors should note the 10/06/2025–10/07/2025 timing and the total of 128,852 shares sold as the near-term, observable action.

Equity Markets Specialist

Sales totaled 128,852 shares at price ranges between $222.32 and $228.71, small relative to TMUS float.

The Form 4 lists each block sale with weighted-average prices and reports residual beneficial ownership near 628.1M shares. The per‑share price ranges indicate execution across prevailing market levels on 10/06/2025–10/07/2025.

From a market-impact perspective, the absolute share count is modest versus total outstanding shares; the material, monitorable items are the adoption date of the 10b5-1 plan and the exact total sold (128,852) over the two trading days.

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

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^*

DEUTSCHE TELEKOM AG

(Last) (First) (Middle)

FRIEDRICH-EBERT-ALLEE 140

(Street)

BONN 2M 53113

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
10/06/2025

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

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

	Form filed by One Reporting Person
X	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	10/06/2025		S(1)		8,765	D	$222.822(2)	628,224,264	D
Common Stock	10/06/2025		S(1)		13,578	D	$223.9285(3)	628,210,686	D
Common Stock	10/06/2025		S(1)		34,618	D	$224.8708(4)	628,176,068	D
Common Stock	10/06/2025		S(1)		2,885	D	$225.5609(5)	628,173,183	D
Common Stock	10/06/2025		S(1)		3,384	D	$226.961(6)	628,169,799	D
Common Stock	10/06/2025		S(1)		510	D	$227.3895(7)	628,169,289	D
Common Stock	10/06/2025		S(1)		686	D	$228.87	628,168,603	D
Common Stock	10/07/2025		S(1)		1,767	D	$224.333(8)	628,166,836	D
Common Stock	10/07/2025		S(1)		4,456	D	$225.1476(9)	628,162,380	D
Common Stock	10/07/2025		S(1)		8,490	D	$226.5122(10)	628,153,890	D
Common Stock	10/07/2025		S(1)		31,978	D	$227.5268(11)	628,121,912	D
Common Stock	10/07/2025		S(1)		17,735	D	$228.1455(12)	628,104,177	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

1. Name and Address of Reporting Person^*

DEUTSCHE TELEKOM AG

(Last) (First) (Middle)

FRIEDRICH-EBERT-ALLEE 140

(Street)

BONN 2M 53113

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

T-Mobile Global Holding GmbH

(Last) (First) (Middle)

LANDGRABENWEG 151

(Street)

BONN 2M 53227

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

T-Mobile Global Zwischenholding GmbH

(Last) (First) (Middle)

FRIEDRICH-EBERT-ALLEE 140

(Street)

BONN 2M 53113

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Deutsche Telekom Holding B.V.

(Last) (First) (Middle)

STATIONSPLEIN 8K

(Street)

MAASTRICHT P7 6221 BT

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. The transactions reported on this Form 4 were effected pursuant to a 10b5-1 trading plan adopted on June 12, 2025.

2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $222.3239 to $223.3094 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $223.3287 to $224.2988 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

4. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $224.3282 to $225.32 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.33 to $225.90 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

6. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $226.34 to $227.30 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

7. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $227.34 to $227.55 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

8. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $223.7968 to $224.7927 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

9. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $224.797 to $225.68 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

10. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.8554 to $226.8534 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

11. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $226.8556 to $227.85 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

12. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $227.8502 to $228.7107 per share. The holder undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Remarks:

Solely for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder ("Section 16"), each Reporting Person may be deemed to be a director-by-deputization by virtue of the fact that each of Timotheus Hoettges, Chief Executive Officer of DT, Dr. Christian P. Illek, Board Member for Finance of DT, Raphael Kubler, Senior Vice President of the Corporate Operating Office of DT and Managing Director of Deutsche Telekom Holding B.V., Thorsten Langheim, Board Member for USA and Group Development of DT, and Dominique Leroy, Board Member for Europe of DT, serve on the board of directors of the Issuer. In addition, Each of T-Mobile Global Zwischenholding GmbH, T-Mobile Global Holding GmbH and Deutsche Telekom Holding B.V. are wholly-owned subsidiaries of DT. Each Reporting Person disclaims beneficial ownership in the securities reported on this Form 4 except to the extent of its pecuniary interest, if any, therein, and this report shall not be deemed to be an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. Deutsche Telekom disclaims beneficial ownership in any Common Stock held by Project 6 or Project 9 if such Common Stock is not subject to the Proxy Agreement.

	/s/ Christoph Appel Attorney-in-fact	10/08/2025
	/s/ Christoph Appel Attorney-in-fact	10/08/2025
	/s/ Christoph Appel Attorney-in-fact	10/08/2025
	/s/ Christoph Appel Attorney-in-fact	10/08/2025
	** 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.
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FAQ

What did Deutsche Telekom sell in the Form 4 filing for TMUS?

The reporting group sold a total of 128,852 shares of TMUS common stock on 10/06/2025 and 10/07/2025.

Were the sales executed under a trading plan?

Yes. The transactions were made pursuant to a 10b5-1 trading plan adopted on 06/12/2025.

At what prices were the TMUS shares sold?

Weighted-average prices for the sales ranged approximately from $222.3239 to $228.7107 per share, with per‑trade ranges provided in the filing.

How many shares does the reporting group beneficially own after these transactions?

The last reported amount of beneficial ownership on the Form 4 is 628,104,177 shares.

Who filed the Form 4 on behalf of the reporting group?

The filing lists multiple Deutsche Telekom entities (including Deutsche Telekom AG, T-Mobile Global Holding GmbH, and subsidiaries) and was signed by an attorney-in-fact, Christoph Appel, on 10/08/2025.