SOFTBANK GROUP CORP.

SEC source: 0000925421-20-000264 · edgar.xml · nonDerivative · entry 3

SOFTBANK GROUP CORP · CIK 0001065521 · Director · 10% owner

SoftBank Group Capital Ltd · CIK 0001755163 · Director · 10% owner

Delaware Project 4 L.L.C. · CIK 0001815950 · Director · 10% owner

Delaware Project 6 L.L.C. · CIK 0001815949 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By SoftBank Group Capital Ltd

Disclosed balance after: 111,291,623

F1 · kind: Marcelo Claure, Stephen Kappes, each members of the Board of Directors of the Issuer, and Ronald D. Fisher, who resigned from the Board of Directors on June 22, 2020, were elected as representatives of Softbank Group Corp. ("SoftBank"), SoftBank Group Capital Ltd ("SBGC"), Delaware Project 4 L.L.C. ("Project 4 LLC") 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.

F3 · kind: Represents the number of shares of Common Stock subject to a rights offering by the Issuer pursuant to which it issued holders of record of Common Stock as of 5:00 pm on June 25, 2020 the right to purchase 0.05 shares of Common Stock at $103.00 per share, up to an aggregate of 19,750,000 shares. Pursuant to the Share Repurchase Agreement, SBGC agreed to sell an aggregate of up to 19,750,000 shares to the Issuer, to the extent such shares are issued in the rights offering.

F3 · shares: Represents the number of shares of Common Stock subject to a rights offering by the Issuer pursuant to which it issued holders of record of Common Stock as of 5:00 pm on June 25, 2020 the right to purchase 0.05 shares of Common Stock at $103.00 per share, up to an aggregate of 19,750,000 shares. Pursuant to the Share Repurchase Agreement, SBGC agreed to sell an aggregate of up to 19,750,000 shares to the Issuer, to the extent such shares are issued in the rights offering.

SEC source: 0000925421-20-000264 · edgar.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · Director · 10% owner

SoftBank Group Capital Ltd · CIK 0001755163 · Director · 10% owner

Delaware Project 4 L.L.C. · CIK 0001815950 · Director · 10% owner

Delaware Project 6 L.L.C. · CIK 0001815949 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By SoftBank Group Capital Ltd

Disclosed balance after: 131,041,623

F1 · kind: Marcelo Claure, Stephen Kappes, each members of the Board of Directors of the Issuer, and Ronald D. Fisher, who resigned from the Board of Directors on June 22, 2020, were elected as representatives of Softbank Group Corp. ("SoftBank"), SoftBank Group Capital Ltd ("SBGC"), Delaware Project 4 L.L.C. ("Project 4 LLC") 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.

F2 · kind: The shares were sold to the Issuer pursuant to a Share Repurchase Agreement, dated as of June 22, 2020 (the "Share Repurchase Agreement"), between SBGC and the Issuer. The Issuer sold 154,147,026 shares of common stock in a registered public offering that closed on June 26, 2020, the net proceeds of which were used by the Issuer to purchase an equal number of shares of Common Stock from SBGC.

F6 · kind: Reflects the acquisition from the Issuer, in accordance with the Share Repurchase Agreement, and as partial consideration, together with a $1,667,167,222.80 cash payment from the Issuer, for the 19,417,400 shares of Common Stock reported on this Form 4, a contingent value right note (the "CVR Note") in the aggregate principal amount of $2,000,000,000. Pursuant to the CVR Note, the Trust will deliver on the Exchange Date (June 1, 2023, which may be extended as provided for in the CVR Note) a number of shares of Common Stock with respect to each $1,000 principal amount of the CVR Note determined by an exchange rate set forth in the CVR Note. The exchange rate is based on the daily volume weighted average price of a share of Common Stock during the 40 trading days preceding June 1, 2023.

F2 · price: The shares were sold to the Issuer pursuant to a Share Repurchase Agreement, dated as of June 22, 2020 (the "Share Repurchase Agreement"), between SBGC and the Issuer. The Issuer sold 154,147,026 shares of common stock in a registered public offering that closed on June 26, 2020, the net proceeds of which were used by the Issuer to purchase an equal number of shares of Common Stock from SBGC.

F6 · price: Reflects the acquisition from the Issuer, in accordance with the Share Repurchase Agreement, and as partial consideration, together with a $1,667,167,222.80 cash payment from the Issuer, for the 19,417,400 shares of Common Stock reported on this Form 4, a contingent value right note (the "CVR Note") in the aggregate principal amount of $2,000,000,000. Pursuant to the CVR Note, the Trust will deliver on the Exchange Date (June 1, 2023, which may be extended as provided for in the CVR Note) a number of shares of Common Stock with respect to each $1,000 principal amount of the CVR Note determined by an exchange rate set forth in the CVR Note. The exchange rate is based on the daily volume weighted average price of a share of Common Stock during the 40 trading days preceding June 1, 2023.

SEC source: 0000925421-20-000264 · edgar.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · Director · 10% owner

SoftBank Group Capital Ltd · CIK 0001755163 · Director · 10% owner

Delaware Project 4 L.L.C. · CIK 0001815950 · Director · 10% owner

Delaware Project 6 L.L.C. · CIK 0001815949 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By SoftBank Group Capital Ltd

Disclosed balance after: 150,459,023

F1 · kind: Marcelo Claure, Stephen Kappes, each members of the Board of Directors of the Issuer, and Ronald D. Fisher, who resigned from the Board of Directors on June 22, 2020, were elected as representatives of Softbank Group Corp. ("SoftBank"), SoftBank Group Capital Ltd ("SBGC"), Delaware Project 4 L.L.C. ("Project 4 LLC") 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.

F2 · kind: The shares were sold to the Issuer pursuant to a Share Repurchase Agreement, dated as of June 22, 2020 (the "Share Repurchase Agreement"), between SBGC and the Issuer. The Issuer sold 154,147,026 shares of common stock in a registered public offering that closed on June 26, 2020, the net proceeds of which were used by the Issuer to purchase an equal number of shares of Common Stock from SBGC.

SEC source: 0000925421-20-000261 · edgar.xml · derivative · entry 1

SoftBank Group Capital Ltd · CIK 0001755163 · Director · 10% owner

SOFTBANK GROUP CORP · CIK 0001065521 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,905,479

Underlying: Common Stock · 44,905,479 shares

Expires 2024-06-22

F1 · derivative.exercise_price: The exercise price per share of the call options is the lesser of (i) $106.90 and (ii) the volume weighted average price of the shares of common stock of the Issuer sold by SoftBank Group Capital Ltd ("SBGC") in one or more underwritten public offerings of Common Stock on or prior to December 22, 2020, which may include one or more "synthetic secondary offerings" undertaken through the Company,

F2 · derivative.exercise_price: (Continued from footnote 1) in each case during the period beginning on June 22, 2020 and ending on the earlier of (x) December 22, 2020 and (y) the close of business on the business day immediately preceding the date of delivery of the first notice of exercise of the options, calculated after all discounts, commissions, spreads, fees or other similar amounts as determined by, or agreed to with, the underwriters, placement agents or other persons performing similar functions in connection with such public offerings.

F3 · kind: Marcelo Claure, Stephen Kappes, each members of the Board of Directors of the Issuer, and Ronald D. Fisher, who resigned from the Board of Directors on June 22, 2020, were elected as representatives of Softbank Group Corp. ("SoftBank"), SBGC and the other SoftBank Parties (defined below). As a result, each of these entities is a director by deputization for Section 16 purposes.

F4 · price: In connection with the transactions between or among SoftBank, Deutsche Telekom AG ("DT"), Claure Mobile LLC (the "Executive Purchaser"), SBGC, Delaware Project 4 L.L.C. ("Project 4 LLC"), Delaware Project 6 L.L.C. ("Project 6 LLC" and, 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"),

F5 · price: (Continued from footnote 4) 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"). As a portion of the consideration for the Proxy Agreement Consent and as part of the transactions contemplated by the Master Framework Agreement, SoftBank granted the options to a subsidiary of the Issuer, which, in turn, issued a back-to-back call option to DT.

F6 · ownership.direct: The derivative securities are directly held by SBGC, a wholly owned subsidiary of SoftBank. SoftBank disclaims beneficial ownership of the derivative securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000925421-20-000150 · edgar.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F1 · kind: Disposed of in the merger of a wholly owned subsidiary of T-Mobile US, Inc. ("T-Mobile") with and into Issuer, with Issuer continuing as the surviving corporation and a wholly owned subsidiary of T-Mobile, in exchange for 353,357,606 shares of T-Mobile common stock having a market value of $85.13 per share on the closing date of the merger.

F2 · shares: Such figure reflects 314,269,036 shares of Sprint common stock that were owned directly by Galaxy Investment Holdings, Inc. ("Galaxy") and 3,131,105,447 shares of Sprint common stock that were owned directly by Starburst I, Inc. ("Starburst"). Galaxy and Starburst were indirect wholly owned subsidiaries of SoftBank Group Corp. prior to the merger.

F1 · price: Disposed of in the merger of a wholly owned subsidiary of T-Mobile US, Inc. ("T-Mobile") with and into Issuer, with Issuer continuing as the surviving corporation and a wholly owned subsidiary of T-Mobile, in exchange for 353,357,606 shares of T-Mobile common stock having a market value of $85.13 per share on the closing date of the merger.

F2 · ownership.nature: Such figure reflects 314,269,036 shares of Sprint common stock that were owned directly by Galaxy Investment Holdings, Inc. ("Galaxy") and 3,131,105,447 shares of Sprint common stock that were owned directly by Starburst I, Inc. ("Starburst"). Galaxy and Starburst were indirect wholly owned subsidiaries of SoftBank Group Corp. prior to the merger.

SEC source: 0000925421-20-000155 · edgar.xml · derivative · entry 2

SoftBank Group Capital Ltd · CIK 0001755163 · 10% owner

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,751,557

Underlying: Common Stock · 48,751,557 shares

Expires not disclosed

F1 · derivative.exercise_price: See remarks below.

F1 · kind: See remarks below.

F1 · price: See remarks below.

F1 · derivative.exercise_date: See remarks below.

F1 · derivative.expiration_date: See remarks below.

F2 · ownership.direct: The shares are directly held by SoftBank Group Capital Ltd, a wholly owned subsidiary of SoftBank. SoftBank may be deemed to have voting and dispositive power with respect to the shares held by SoftBank Group Capital Ltd. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000925421-20-000155 · edgar.xml · nonDerivative · entry 1

SoftBank Group Capital Ltd · CIK 0001755163 · 10% owner

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 304,606,049

F1 · kind: See remarks below.

F1 · price: See remarks below.

F2 · ownership.direct: The shares are directly held by SoftBank Group Capital Ltd, a wholly owned subsidiary of SoftBank. SoftBank may be deemed to have voting and dispositive power with respect to the shares held by SoftBank Group Capital Ltd. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0001628280-18-012505 · wf-form4_153930002073213.xml · derivative · entry 2

SoftBank Group Capital Ltd · CIK 0001755163 · 10% owner

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 2,033,990 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.exercise_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F1 · derivative.expiration_date: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.direct: The shares are directly held by SoftBank Group Capital Limited, a wholly owned subsidiary of SoftBank Group Corp., a Japanese kabushiki kaisha. SoftBank Group Corp. may be deemed to have voting and dispositive power with respect to the shares held by SoftBank Group Capital Limited. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0001628280-18-012505 · wf-form4_153930002073213.xml · nonDerivative · entry 1

SoftBank Group Capital Ltd · CIK 0001755163 · 10% owner

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,033,990

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The shares of Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at the then-effective conversion rate for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Certificate of Incorporation) immediately prior to the consummation of the Issuer's initial public offering, and have no expiration date.

F2 · ownership.direct: The shares are directly held by SoftBank Group Capital Limited, a wholly owned subsidiary of SoftBank Group Corp., a Japanese kabushiki kaisha. SoftBank Group Corp. may be deemed to have voting and dispositive power with respect to the shares held by SoftBank Group Capital Limited. Each Reporting Person disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0001209191-18-042465 · doc4.xml · derivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 54,579,924 shares

Expires 2018-07-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · ownership.nature: Such figure reflects 314,269,036 shares of Sprint Common Stock (the "Galaxy Shares") that are owned by Galaxy Investment Holdings, Inc. ("Galaxy"), which is a U.S. indirect wholly-owned subsidiary of SoftBank, and 3,131,105,447 shares of Sprint Common Stock (the "Starburst Shares") that are owned by Starburst. As a result of such ownership, Softbank may be deemed to beneficially own the Galaxy Shares and the Starburst Shares. Starburst expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst Shares.

SEC source: 0001209191-18-042465 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,445,374,483

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: These securities are owned indirectly by SoftBank Group Corp. ("SoftBank") through Starburst I, Inc. ("Starburst"), which is a U.S. indirect wholly owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Starburst.

F2 · balance_after: Such figure reflects 314,269,036 shares of Sprint Common Stock (the "Galaxy Shares") that are owned by Galaxy Investment Holdings, Inc. ("Galaxy"), which is a U.S. indirect wholly-owned subsidiary of SoftBank, and 3,131,105,447 shares of Sprint Common Stock (the "Starburst Shares") that are owned by Starburst. As a result of such ownership, Softbank may be deemed to beneficially own the Galaxy Shares and the Starburst Shares. Starburst expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst Shares.

F2 · ownership.nature: Such figure reflects 314,269,036 shares of Sprint Common Stock (the "Galaxy Shares") that are owned by Galaxy Investment Holdings, Inc. ("Galaxy"), which is a U.S. indirect wholly-owned subsidiary of SoftBank, and 3,131,105,447 shares of Sprint Common Stock (the "Starburst Shares") that are owned by Starburst. As a result of such ownership, Softbank may be deemed to beneficially own the Galaxy Shares and the Starburst Shares. Starburst expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst Shares.

SEC source: 0001209191-18-004639 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,390,794,559

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.43 to $5.62, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 314,269,036 shares of Sprint Common Stock (the "Galaxy Shares") as of January 17, 2018 that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 314,269,036 shares of Sprint Common Stock (the "Galaxy Shares") as of January 17, 2018 that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-003949 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,389,782,600

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.60 to $5.74, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 310,227,756 and 313,257,077 shares of Sprint Common Stock (the "Galaxy Shares") as of January 12 and January 16, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 310,227,756 and 313,257,077 shares of Sprint Common Stock (the "Galaxy Shares") as of January 12 and January 16, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-003949 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,386,753,279

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.65 to $5.75, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 310,227,756 and 313,257,077 shares of Sprint Common Stock (the "Galaxy Shares") as of January 12 and January 16, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 310,227,756 and 313,257,077 shares of Sprint Common Stock (the "Galaxy Shares") as of January 12 and January 16, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-003411 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,383,633,510

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.61 to $5.79, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 303,988,218 and 307,107,987 shares of Sprint Common Stock (the "Galaxy Shares") as of January 10 and January 11, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 303,988,218 and 307,107,987 shares of Sprint Common Stock (the "Galaxy Shares") as of January 10 and January 11, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-003411 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,380,513,741

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.61 to $5.76, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 303,988,218 and 307,107,987 shares of Sprint Common Stock (the "Galaxy Shares") as of January 10 and January 11, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 303,988,218 and 307,107,987 shares of Sprint Common Stock (the "Galaxy Shares") as of January 10 and January 11, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-003116 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,377,393,972

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.65 to $5.94, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 297,748,680 and 300,868,449 shares of Sprint Common Stock (the "Galaxy Shares") as of January 8 and January 9, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 297,748,680 and 300,868,449 shares of Sprint Common Stock (the "Galaxy Shares") as of January 8 and January 9, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-003116 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,374,274,203

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.82 to $5.94, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 297,748,680 and 300,868,449 shares of Sprint Common Stock (the "Galaxy Shares") as of January 8 and January 9, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 297,748,680 and 300,868,449 shares of Sprint Common Stock (the "Galaxy Shares") as of January 8 and January 9, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-002741 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,372,045,796

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.70 to $5.77, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: (3) Such figure reflects 293,369,682 and 295,520,273 shares of Sprint Common Stock (the "Galaxy Shares") as of January 4 and January 5, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: (3) Such figure reflects 293,369,682 and 295,520,273 shares of Sprint Common Stock (the "Galaxy Shares") as of January 4 and January 5, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-002741 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,369,895,205

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.50 to $5.87, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: (3) Such figure reflects 293,369,682 and 295,520,273 shares of Sprint Common Stock (the "Galaxy Shares") as of January 4 and January 5, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: (3) Such figure reflects 293,369,682 and 295,520,273 shares of Sprint Common Stock (the "Galaxy Shares") as of January 4 and January 5, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-002227 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,366,884,378

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.92 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 288,208,264 and 290,358,855 shares of Sprint Common Stock (the "Galaxy Shares") as of January 2 and January 3, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 288,208,264 and 290,358,855 shares of Sprint Common Stock (the "Galaxy Shares") as of January 2 and January 3, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-002227 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,364,733,787

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.85 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 288,208,264 and 290,358,855 shares of Sprint Common Stock (the "Galaxy Shares") as of January 2 and January 3, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 288,208,264 and 290,358,855 shares of Sprint Common Stock (the "Galaxy Shares") as of January 2 and January 3, 2018, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-000195 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,362,583,196

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.92 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure 283,916,373 and 286,057,673 shares of Sprint Common Stock (the "Galaxy Shares") as of December 28 and December 29, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure 283,916,373 and 286,057,673 shares of Sprint Common Stock (the "Galaxy Shares") as of December 28 and December 29, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-18-000195 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,360,441,896

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.88 to $5.95, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure 283,916,373 and 286,057,673 shares of Sprint Common Stock (the "Galaxy Shares") as of December 28 and December 29, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure 283,916,373 and 286,057,673 shares of Sprint Common Stock (the "Galaxy Shares") as of December 28 and December 29, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-067582 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,358,339,744

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.82 to $5.98, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 279,672,921 and 281,814,221 shares of Sprint Common Stock (the "Galaxy Shares") as of December 26 and December 27, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 279,672,921 and 281,814,221 shares of Sprint Common Stock (the "Galaxy Shares") as of December 26 and December 27, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-067582 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,356,198,444

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.63 to $5.85, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 279,672,921 and 281,814,221 shares of Sprint Common Stock (the "Galaxy Shares") as of December 26 and December 27, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 279,672,921 and 281,814,221 shares of Sprint Common Stock (the "Galaxy Shares") as of December 26 and December 27, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-067231 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,354,057,144

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.62 to $5.72, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 274,967,841 and 277,531,621 shares of Sprint Common Stock (the "Galaxy Shares") as of December 21 and December 22, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 274,967,841 and 277,531,621 shares of Sprint Common Stock (the "Galaxy Shares") as of December 21 and December 22, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-067231 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,351,493,364

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.59 to $5.70, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 274,967,841 and 277,531,621 shares of Sprint Common Stock (the "Galaxy Shares") as of December 21 and December 22, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F4 · balance_after: Such figure includes 336,896 shares deemed reacquired by SoftBank through Galaxy as reported on a Form 4/A filed on December 21, 2017, which shares were not reported in prior filings since the date of the transaction subject to the Form 4/A.

F3 · ownership.nature: Such figure reflects 274,967,841 and 277,531,621 shares of Sprint Common Stock (the "Galaxy Shares") as of December 21 and December 22, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-066792 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,348,592,689

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.60 to $5.66, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 269,503,387 and 272,067,166 shares of Sprint Common Stock (the "Galaxy Shares") as of December 19 and December 20, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 269,503,387 and 272,067,166 shares of Sprint Common Stock (the "Galaxy Shares") as of December 19 and December 20, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-066792 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,346,028,910

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.58 to $5.72, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 269,503,387 and 272,067,166 shares of Sprint Common Stock (the "Galaxy Shares") as of December 19 and December 20, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 269,503,387 and 272,067,166 shares of Sprint Common Stock (the "Galaxy Shares") as of December 19 and December 20, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-066311 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,343,497,140

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.52 to $5.71, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 264,407,838 and 266,971,617 shares of Sprint Common Stock (the "Galaxy Shares") as of December 15 and December 18, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 264,407,838 and 266,971,617 shares of Sprint Common Stock (the "Galaxy Shares") as of December 15 and December 18, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-066311 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,340,933,361

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.49 to $5.67, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 264,407,838 and 266,971,617 shares of Sprint Common Stock (the "Galaxy Shares") as of December 15 and December 18, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 264,407,838 and 266,971,617 shares of Sprint Common Stock (the "Galaxy Shares") as of December 15 and December 18, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-066193 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,338,457,663

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.63 to $5.72, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 261,932,140 shares of Sprint Common Stock (the "Galaxy Shares") as of December 14, 2017 that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 261,932,140 shares of Sprint Common Stock (the "Galaxy Shares") as of December 14, 2017 that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-064430 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,335,226,546

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.74 to $5.91, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 258,701,023 shares of Sprint Common Stock (the "Galaxy Shares") as of December 5, 2017 that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 258,701,023 shares of Sprint Common Stock (the "Galaxy Shares") as of December 5, 2017 that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-064090 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,334,638,544

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.93 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 257,067,981 and 258,113,021 shares of Sprint Common Stock (the "Galaxy Shares") as of December 1 and December 4, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 257,067,981 and 258,113,021 shares of Sprint Common Stock (the "Galaxy Shares") as of December 1 and December 4, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-064090 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,333,593,504

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.91 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 257,067,981 and 258,113,021 shares of Sprint Common Stock (the "Galaxy Shares") as of December 1 and December 4, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 257,067,981 and 258,113,021 shares of Sprint Common Stock (the "Galaxy Shares") as of December 1 and December 4, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-063347 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,332,321,851

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.97 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F2 · balance_after: Such figure reflects 254,865,689 and 255,796,328 shares of Sprint Common Stock (the "Galaxy Shares") as of November 29 and November 30, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F2 · ownership.nature: Such figure reflects 254,865,689 and 255,796,328 shares of Sprint Common Stock (the "Galaxy Shares") as of November 29 and November 30, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-063347 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,331,391,212

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · balance_after: Such figure reflects 254,865,689 and 255,796,328 shares of Sprint Common Stock (the "Galaxy Shares") as of November 29 and November 30, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F2 · ownership.nature: Such figure reflects 254,865,689 and 255,796,328 shares of Sprint Common Stock (the "Galaxy Shares") as of November 29 and November 30, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-061179 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,331,360,471

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.94 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 254,778,929 and 254,834,948 shares of Sprint Common Stock (the "Galaxy Shares") as of November 14 and November 15, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 254,778,929 and 254,834,948 shares of Sprint Common Stock (the "Galaxy Shares") as of November 14 and November 15, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-061518 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,331,671,947

F1 · kind: On March 17, 2014, Galaxy Investment Holdings, Inc. ("Galaxy"), a U.S. wholly owned subsidiary of SoftBank Group Corp. ("SoftBank") granted to Ronald D. Fisher an award of restricted stock units (the "RSUs") for 2,846,508 shares of the common stock of Sprint Corporation, par value $0.01 per share ("Sprint Common Stock"), owned by Galaxy. The RSUs vest in four equal installments beginning on November 15, 2015, subject to the terms of the RSU award agreement. RSUs in respect of 711,627 shares vested on November 15, 2017, of which 311,476 were settled in cash and 400,151 were settled in shares of Sprint Common Stock. Such cash was withheld to satisfy tax withholding obligations. The amount reported in column 4 represents shares of Sprint Common Stock deemed reacquired by Galaxy from Mr. Fisher in respect of the RSUs settled in cash.

F2 · ownership.nature: Such figure reflects 255,146,424 shares of Sprint Common Stock (the "Galaxy Shares") that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-066887 · doc4a.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,331,697,367

F1 · kind: On March 17, 2014, Galaxy Investment Holdings, Inc. ("Galaxy"), a U.S. wholly owned subsidiary of SoftBank Group Corp. ("SoftBank") granted to Ronald D. Fisher an award of restricted stock units (the "RSUs") for 2,846,508 shares of the common stock of Sprint Corporation, par value $0.01 per share ("Sprint Common Stock"), owned by Galaxy. The RSUs vest in four equal installments beginning on November 15, 2015, subject to the terms of the RSU award agreement. RSUs in respect of 711,627 shares vested on November 15, 2017, of which 336,896 were settled in cash and 374,731 were settled in shares of Sprint Common Stock. Such cash was withheld to satisfy tax withholding obligations. The amount reported in column 4 represents shares of Sprint Common Stock deemed reacquired by Galaxy from Mr. Fisher in respect of the RSUs settled in cash.

F2 · ownership.nature: Such figure reflects 255,171,844 shares of Sprint Common Stock (the "Galaxy Shares") that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-061179 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,331,304,452

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.95 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint Corporation ("Sprint"), any stockholder of Sprint, or the Staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 254,778,929 and 254,834,948 shares of Sprint Common Stock (the "Galaxy Shares") as of November 14 and November 15, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 254,778,929 and 254,834,948 shares of Sprint Common Stock (the "Galaxy Shares") as of November 14 and November 15, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-060717 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,328,726,657

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.97 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 251,158,968 and 252,201,134 shares of Sprint Common Stock (the "Galaxy Shares") as of November 10 and November 13, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 251,158,968 and 252,201,134 shares of Sprint Common Stock (the "Galaxy Shares") as of November 10 and November 13, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-060717 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,327,684,491

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.05 to $6.25, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 251,158,968 and 252,201,134 shares of Sprint Common Stock (the "Galaxy Shares") as of November 10 and November 13, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 251,158,968 and 252,201,134 shares of Sprint Common Stock (the "Galaxy Shares") as of November 10 and November 13, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-060282 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,325,522,996

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.98 to $6.32, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 244,674,483 and 248,997,473 shares of Sprint Common Stock (the "Galaxy Shares") as of November 8 and November 9, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 244,674,483 and 248,997,473 shares of Sprint Common Stock (the "Galaxy Shares") as of November 8 and November 9, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-060282 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,321,200,006

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.65 to $6.09, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint Corporation ("Sprint"), any stockholder of Sprint, or the Staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 244,674,483 and 248,997,473 shares of Sprint Common Stock (the "Galaxy Shares") as of November 8 and November 9, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 244,674,483 and 248,997,473 shares of Sprint Common Stock (the "Galaxy Shares") as of November 8 and November 9, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-059771 · doc4.xml · nonDerivative · entry 2

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,316,877,016

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.74 to $5.97, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint, any stockholder of Sprint, or the Staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 238,190,116 and 240,351,493 shares of Sprint Common Stock (the "Galaxy Shares") as of November 6 and November 7, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 238,190,116 and 240,351,493 shares of Sprint Common Stock (the "Galaxy Shares") as of November 6 and November 7, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-17-059771 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,314,715,639

F1 · shares: These securities are owned indirectly by SoftBank through Galaxy Investment Holdings, Inc. ("Galaxy"), which is a wholly-owned subsidiary of SoftBank. As a result, SoftBank may be deemed to beneficially own such shares held directly by Galaxy.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.85 to $5.99, exclusive of any fees, commissions or other expenses. The Reporting Persons undertake to provide Sprint Corporation ("Sprint"), any stockholder of Sprint, or the Staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

F3 · balance_after: Such figure reflects 238,190,116 and 240,351,493 shares of Sprint Common Stock (the "Galaxy Shares") as of November 6 and November 7, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

F3 · ownership.nature: Such figure reflects 238,190,116 and 240,351,493 shares of Sprint Common Stock (the "Galaxy Shares") as of November 6 and November 7, 2017, respectively, that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") as of each such date that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.

SEC source: 0001209191-16-150870 · doc4.xml · nonDerivative · entry 1

SOFTBANK GROUP CORP · CIK 0001065521 · 10% owner

Galaxy Investment Holdings, Inc. · CIK 0001583143 · 10% owner

Starburst I, Inc. · CIK 0001560156 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,310,392,649

F1 · kind: On March 17, 2014, Galaxy Investment Holdings, Inc. ("Galaxy"), a U.S. wholly owned subsidiary of SoftBank Group Corp. ("SoftBank") granted to Ronald D. Fisher an award of restricted stock units (the "RSUs") for 2,846,508 shares of the common stock of Sprint Corporation, par value $0.01 per share ("Sprint Common Stock"), owned by Galaxy. The RSUs vest in four equal installments beginning on November 15, 2015, subject to the terms of the RSU award agreement. RSUs in respect of 711,627 shares vested on November 15, 2016, of which 315,958 were settled in cash and 395,669 were settled in shares of Sprint Common Stock. Such cash was withheld to satisfy tax withholding obligations. The amount reported in column 4 represents shares of Sprint Common Stock deemed reacquired by Galaxy from Mr. Fisher in respect of the RSUs settled in cash.

F2 · ownership.nature: Such figure reflects 233,867,126 shares of Sprint Common Stock (the "Galaxy Shares") that are owned indirectly by SoftBank through Galaxy and 3,076,525,523 shares of Sprint Common Stock (the "Starburst I Shares") that are owned indirectly by SoftBank through Starburst I, Inc. ("Starburst I"), which is a U.S. wholly owned subsidiary of SoftBank. As a result of such ownership, SoftBank may be deemed to beneficially own the Galaxy Shares and the Starburst I Shares. Starburst I expressly disclaims beneficial ownership with respect to the Galaxy Shares and Galaxy expressly disclaims beneficial ownership with respect to the Starburst I Shares.