[144] T-Mobile US, Inc. SEC Filing

Rhea-AI Filing Summary

Form 144 notice for insider sale at T-Mobile US, Inc. (TMUS). The filing reports that 22,500 shares of common stock are proposed to be sold through Fidelity Brokerage Services on NASDAQ with an approximate aggregate market value of $5,751,225 and total outstanding shares of 1,125,419,038. The shares to be sold correspond to restricted stock that vested on 02/15/2025 (4,089 shares) and 04/01/2025 (18,411 shares), both listed as compensation. The filer, identified as G M. Sievert in past sales sections, also sold common shares in the past three months: 22,500 shares on 05/19/2025 for $5,498,998.46 and 22,500 shares on 05/20/2025 for $5,422,210.91. The notice includes the standard signature representation that the seller is not aware of undisclosed material adverse information.

Positive

• Clear disclosure of acquisition dates and nature (restricted stock vesting) for all shares to be sold
• Broker and exchange details provided (Fidelity Brokerage Services; NASDAQ) enabling transparency of the proposed sale
• Previous sales reported for the same filer, giving context to recent insider activity

Negative

• No 10b5-1 plan or adoption date is indicated in the filing, so trading-plan protections are not documented
• Filing lacks issuer contact details and issuer name in the provided tables, limiting context about the company within this document

Insights

Securities Analyst

TL;DR: Insider reports planned sale of 22,500 vested shares (~0.002% of outstanding), following prior sales in May 2025.

The filing documents a routine Rule 144 notice for the proposed disposition of 22,500 shares resulting from restricted stock vesting on 02/15/2025 and 04/01/2025. The indicated aggregate market value of the proposed sale is $5,751,225 against 1,125,419,038 shares outstanding, representing approximately 0.002% of the outstanding float. Prior reported sales by the same named seller show two 22,500-share transactions on 05/19/2025 and 05/20/2025 with stated gross proceeds, indicating the filer has recently monetized vested shares. This appears to be standard insider disposal of compensation-related equity rather than a company-level event.

Compliance/Risk Analyst

TL;DR: Filing contains standard Rule 144 disclosures and the insider attestation; no adverse compliance flags in the document itself.

The notice includes required dealer and broker information and the seller's representation that no undisclosed material adverse information exists. Acquisition entries clearly state the shares arose from restricted stock vesting and were paid as compensation. The document does not disclose any additional trading plans, 10b5-1 dates, or material company developments. From a compliance perspective, the form meets the typical disclosure elements for a Rule 144 sale notice.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	22500	5751225.00	1125419038	08/18/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/15/2025	Restricted Stock Vesting	Issuer			4089	02/15/2025	Compensation
Common	04/01/2025	Restricted Stock Vesting	Issuer			18411	04/01/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
G M. Sievert 12920 SE 38th Street Bellevue WA 98006-1350	Common	05/19/2025	22500	5498998.46
G M. Sievert 12920 SE 38th Street Bellevue WA 98006-1350	Common	05/20/2025	22500	5422210.91

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What shares does the Form 144 for TMUS cover?

The notice covers 22,500 shares of Common Stock proposed to be sold via Fidelity Brokerage Services on NASDAQ.

When were the shares acquired that are being sold?

The shares arose from restricted stock vesting on 02/15/2025 (4,089 shares) and 04/01/2025 (18,411 shares) and were recorded as compensation.

How large is the proposed sale relative to outstanding shares?

The 22,500 shares represent approximately 0.002% of the 1,125,419,038 shares outstanding reported in the filing.

Did the filer recently sell any TMUS shares?

Yes, the filing lists sales by G M. Sievert of 22,500 shares on 05/19/2025 for $5,498,998.46 and 22,500 shares on 05/20/2025 for $5,422,210.91.

Does the Form 144 indicate a 10b5-1 trading plan date?

No. The filing does not provide a plan adoption date or indicate reliance on a Rule 10b5-1 plan.