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).

1. Name and Address of Reporting Person* SOFTBANK GROUP CORP (Last) (First) (Middle) TOKYO PORTCITY TAKESHIBA 1-7-1 KAIGAN (Street) MINATO-KU TOKYO M0 105-7537 (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 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 09/08/2021
	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

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
Forward sale contract (obligation to sell)	(1)(2)(3)(4)	09/08/2021		J/K(1)(2)(3)(4)		17,935,000(1)		(1)(2)(3)(4)	06/25/2024	Common Stock	17,935,000(1)	(1)(2)(3)(4)	17,935,000(1)	I	By: Delaware Project 6 L.L.C.

1. Name and Address of Reporting Person* SOFTBANK GROUP CORP (Last) (First) (Middle) TOKYO PORTCITY TAKESHIBA 1-7-1 KAIGAN (Street) MINATO-KU TOKYO M0 105-7537 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Delaware Project 6 L.L.C. (Last) (First) (Middle) 1 CIRCLE STAR WAY 4F (Street) SAN CARLOS CA 94070 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. On September 8, 2021, Delaware Project 6 L.L.C. ("Project 6 LLC") entered into master confirmations under Rule 144 under the Securities Act of 1933, as amended, in respect of two variable prepaid forward sale contracts (the "Forward Contracts") with unaffiliated dealers covering up to a maximum of 17,935,000 shares of the Issuer's common stock (the "Subject Shares"). The Forward Contracts provide for cash settlement based on the average of the daily volume-weighted average trading prices of the Issuer's common stock over the 20 trading day period beginning on May 29, 2024 (the "Settlement Price"). Project 6 LLC has the option to elect to settle the Forward Contracts on a physical basis.

2. In exchange for entering into the Forward Contracts and assuming the obligations thereunder, Project 6 will receive a cash payment of $1,809,096,276.00.

3. The cash equivalent to the value of the Subject Shares to be delivered to the dealers on the Settlement Date is to be determined as follows: (a) if the Settlement Price is equal to or less than $116.388 per Share (the "Forward Floor Price"), Project 6 LLC will deliver to the dealers the cash equivalent value of the Subject Shares based on the Settlement Price; (b) if the Settlement Price is between the Forward Floor Price and $161.650 per Share (the "Forward Cap Price"), Project 6 LLC will deliver to the dealers the cash equivalent value of the Subject Shares based on the Settlement Price, multiplied by a fraction, (i) the numerator of which is the Forward Floor Price and (ii) the denominator of which is the Settlement Price; and (c) if the Settlement Price is greater than the Forward Cap Price,

4. (Continued from footnote 3) Project 6 LLC will deliver to the dealers the cash equivalent value of the Subject Shares based on the Settlement Price multiplied by a fraction (i) the numerator of which is the sum of (x) the Forward Floor Price and (y) the Settlement Price minus the Forward Cap Price, and (ii) the denominator of which is the Settlement Price.

Remarks:

Marcelo Claure, an executive officer of SoftBank Group Corp. is a member of the Board of Directors of the Issuer. As a result each of the Reporting Persons may be a director by deputization for Section 16 purposes. Mr. Claure disclaims beneficial ownership of the shares of common stock reported in this filing, except to the extent of his pecuniary interest therein.

	/s/ Natsuko Ohga, Head of Corporate Legal Department of SOFTBANK GROUP CORP.	09/10/2021
	/s/ Stephen Lam, Manager of DELAWARE PROJECT 6 L.L.C	09/10/2021
	** Signature of Reporting Person	Date
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