Sec Form 4 Filing - SOFTBANK GROUP CORP @ T-Mobile US, Inc. - 2020-10-06

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

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person SOFTBANK GROUP CORP 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) (Last) (First) (Middle) 1-9-1, HIGASHI-SHIMBASHI 3. Date of Earliest Transaction (MM/DD/YY) 10/06/2020 (Street) MINATO-KU TOKYO, M0M0 105-730 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Call Option (obligation to sell) $ 101.455 10/06/2020 A( 1 )( 2 )( 3 ) 44,905,479 ( 2 ) ( 3 ) 06/22/2020 06/22/2024 Common Stock 44,905,479 ( 2 ) ( 3 ) 0 I By: Delaware Project 6 L.L.C. Call Option (obligation to sell) $ 101.455 10/06/2020 J( 2 )( 3 ) 44,905,479 ( 2 ) ( 3 ) 06/22/2020 06/22/2024 Common Stock 44,905,479 ( 2 ) ( 3 ) 44,905,479 I By: Delaware Project 6 L.L.C.

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SOFTBANK GROUP CORP 1-9-1, HIGASHI-SHIMBASHI MINATO-KU TOKYO, M0M0 105-730 X Delaware Project 6 L.L.C. 1 CIRCLE STAR WAY 4F SAN CARLOS, CA94070 X Signatures /s/ Robert Townsend, Senior Vice President & CLO of SOFTBANK GROUP CORP. 10/06/2020 Signature of Reporting Person Date /s/ Robert Townsend, Manager of DELAWARE PROJECT 6 L.L.C 10/06/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Marcelo Claure and Stephen Kappes, each members of the Board of Directors of the Issuer, were elected as representatives of SoftBank Group Corp. ("SoftBank") and Delaware Project 6 L.L.C. ("Project 6 LLC"). As a result each of these entities is a director by deputization for Section 16 purposes. ( 2 )In connection with the transactions between or among SoftBank, Deutsche Telekom AG ("DT"), Claure Mobile LLC (the "Executive Purchaser"), SoftBank Group Capital Ltd. ("SBGC"), Delaware Project 4 L.L.C. ("Project 4 LLC") and Project 6 LLC (together with SoftBank, SBGC and Project 4 LLC, the "SoftBank Parties") and the Issuer as described in the Master Framework Agreement by and among the SoftBank Parties, DT, the Executive Purchaser and the Issuer, dated June 22, 2020 (the "Master Framework Agreement"), DT granted its consent under the Proxy, Lock-Up and ROFR Agreement, dated April 1, 2020, by and between SoftBank and DT, to certain transactions contemplated by the Master Framework Agreement, pursuant to a consent letter between DT and SoftBank, dated June 22, 2020 (the "Proxy Agreement Consent"). (continued in footnote (3)) ( 3 )As a portion of the consideration for the Proxy Agreement Consent and as part of the transactions contemplated by the Master Framework Agreement, SBGC wrote the option to a subsidiary of the Issuer, which, in turn, wrote a back-to-back call option to DT. SBGC subsequently assigned its obligations under the option to Project 6 LLC, a wholly-owned subsidiary of SoftBank. As contemplated by the terms of each option written in June 2020, on October 6, 2020, each of the option written to a subsidiary of the Issuer and the DT back-to-back call option were cancelled and Project 6 LLC issued the call option directly to DT. Because Project 6 LLC's pecuniary interest in the call option remains unchanged, Project 6 LLC disclaims the applicability of Section 16 to these transactions.

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