X0306 4 2021-03-02 0 0001315098 Roblox Corp RBLX 0001766317 Altos Ventures IV Liquidity Fund, L.P. 2882 SAND HILL ROAD SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001848639 Altos Hybrid 3 M, LLC 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001848638 Altos Hybrid 3 W, LLC 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001848642 Altos Hybrid 4 GS, LLC 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001826414 Altos Hybrid 4, L.P. 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001828887 Altos Hybrid CC, LLC 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001848641 Altos Hybrid HG, LLC 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001849388 Altos Hybrid UP, LLC 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001836652 Kim Han 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 0001836648 Nam Hodong 2882 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 0 0 1 0 Class A Common Stock 2021-03-02 4 J 0 2728122 0.00 D 24553106 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 379623 0.00 D 3416653 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 1891814 0.00 D 17026377 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 4056391 0.00 D 36507533 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 62661 0.00 D 786183 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 2260014 0.00 D 20340126 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 21708 0.00 A 21708 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 21708 0.00 D 0 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 982872 0.00 A 982872 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 982872 0.00 D 0 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 389022 0.00 A 389022 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 389023 0.00 A 389023 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 7236 0.00 A 7236 I See Footnotes Class A Common Stock 2021-03-02 4 J 0 7236 0.00 A 7236 I See Footnotes Class A Common Stock 222222 I See Footnotes Class A Common Stock 111111 I See Footnotes Class A Common Stock 475582 I See Footnotes Class A Common Stock 222222 I See Footnotes Class A Common Stock 22222 I See Footnotes Class A Common Stock 111111 I See Footnotes Class A Common Stock 466666 I See Footnotes Class A Common Stock 111112 I See Footnotes Class A Common Stock 55555 I See Footnotes Class A Common Stock 344444 I See Footnotes Class A Common Stock 111111 I See Footnotes Represents a pro-rata in kind distribution of the issuer's Class A Common Stock by Altos Roblox SPV 1, LLC to its members. These shares are held directly by Altos Roblox SPV 1, LLC The general partner of Altos Hybrid 2, L.P. is Altos Hybrid 2GP, LLC; the general partner of Altos Hybrid 4, L.P. is Altos Hybrid 4 GP, LLC; and the general partner of Altos Ventures IV Liquidity Fund, L.P., Altos Ventures IV Reserve Fund, L.P. and Altos Ventures IV, L.P. is Altos Management Partners IV, LLC (collectively, the General Partners). The manager of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners IV, LLC; the manager of Altos Roblox SPV 2020, LLC is Altos Roblox 2020 Management Partners, LLC; the manager of Altos Hybrid 4 GS, LLC and Altos Hybrid HG, LLC is Altos Hybrid 4 GP, LLC; the manager of Altos Hybrid 2 V, LLC and Altos Hybrid 2 P-FIO, LLC is Altos Hybrid 2 GP, LLC; the manager of Altos Hybrid 3 B, LLC, Altos Hybrid 3M, LLC, and Altos Hybrid 3W, LLC is Altos Hybrid 3 GP, LLC; the manager of Altos Hybrid UP, LLC and Altos Hybrid CC, LLC is Altos Hybrid 4 GP, LLC (collectively, the Managers). (Continued from footnote 3). The General Partners and the Managers disclaim beneficial ownership of the shares reported herein except to the extent of their respective pecuniary interests therein, if any. The Managing Directors or Managing Members of the General Partners and the Managers of the Altos Funds are Anthony P. Lee, Han Kim and Hodong Nam who exercise investment and voting control over the shares held by the Altos Funds. Anthony P. Lee, a director of the Issuer, files separate Section 16 reports. Han Kim and Hodong Nam disclaim beneficial ownership of the shares held by the Altos Funds except to the extent of their respective pecuriary interest therein, if any. Represents a pro-rata in kind distribution of the issuer's Class A Common Stock by Altos Roblox SPV 2, LLC to its members. These shares are held directly by Altos Roblox SPV 2, LLC Represents a pro-rata in kind distribution of the issuer's Class A Common Stock by Altos Roblox SPV 2020, LLC to its members. These shares are held directly by Altos Roblox SPV 2020, LLC Represents a pro-rata in kind distribution of the issuer's Class A Common Stock by Altos Ventures IV Liquidity Fund, L.P. to its partners. These shares are held directly by Altos Ventures IV Liquidity Fund, L.P. Represents a pro-rata in kind distribution of the issuer's Class A Common Stock by Altos Ventures IV Reserve Fund, L.P. to its partners. These shares are held directly by Altos Ventures IV Reserve Fund, L.P. Represents a pro-rata in kind distribution of the issuer's Class A Common Stock by Altos Ventures IV, L.P. to its partners. These shares are held directly by Altos Ventures IV, L.P. Represents shares received in a pro-rata in kind distribution of shares of the issuer's Class A Common Stock for Altos Roblox SPV 2020, LLC. These shares are held directly by Altos Roblox 2020 Management Partners, LLC Represents a pro-rata in kind distribution of the issuer's Class A Common Stock from Altos Roblox 2020 Management Partners, LLC to its members. Represents shares received in a pro-rata in kind distribution of shares of the issuer's Class A Common Stock from Altos Ventures IV, L.P. and Altos Ventures IV Reserve Fund, L.P. These shares are held directly by Altos Management Partners IV, LLC Represents a pro-rata in kind distribution of shares of the issuer's Class A Common Stock by Altos Management Partners IV, LLC to its members. Represents shares received in a pro-rata in kind distribution of shares of the issuer's Class A Common Stock from Altos Ventures IV, L.P., Roblox SPV 2, LLC, and Altos Ventures IV Reserve Fund, L.P. These shares are held directly by The Kim Living Trust for which Han Kim serves as trustee. Mr. Kim disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. These shares are held directly by the Nam-MacGill 2006 Family Trust for which Hodong Nam serves as trustee. Mr. Nam disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. Represents shares received in a pro-rata in kind distribution of shares of the Class A Common Stock of the issuer from Altos Roblox SPV 2020, LLC. These shares are held directly by the Han Family Investments, LLC - Sub Fund No. 1 for which Han Kim serves as Managing Member. Mr. Kim disclaims beneficial ownership of the such shares except to the extent of his pecuniary interest therein. These shares are held directly by the Nam-MacGill Investments, LLC - Sub Fund No. 1 for which Hodong Nam serves as Managing Member. Mr. Nam disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. These shares are held directly by Altos Hybrid 2 P-FIO LLC These shares are held directly by Altos Hybrid 2 V LLC. These shares are held directly by Altos Hybrid 2, L.P. These shares are held directly by Altos Hybrid 3 B, LLC These shares are held directly by Altos Hybrid 3M, LLC These shares are held directly by Altos Hybrid 3 W, LLC These shares are held directly by Altos Hybrid 4 GS, LLC These shares are held directly by Altos Hybrid 4, L.P. These shares are held directly by Altos Hybrid CC, LLC These shares are held directly by Altos Hybrid HG, LLC. These shares are held directly by Altos Hybrid UP, LLC /s/Anthony P Lee, Managing Director of Altos Management Partners IV, LLC, the General Partner of Altos Ventures IV Liquidity Fund, L.P. 2021-03-04 Anthony P Lee, Managing Member of Altos Hybrid 3 GP, LLC, the Manager of Altos Hybrid 3 M, LLC 2021-03-04 Anthony P Lee, Managing Member of Altos Hybrid 3 GP, LLC, the Manager of Altos Hybrid 3 W, LLC 2021-03-04 Anthony P Lee, Managing Member of Altos Hybrid 4 GP, LLC, the Manager of Altos Hybrid 4 GS, LLC 2021-03-04 Anthony P Lee, Managing Member of Altos Hybrid 4 GP, LLC, Managing Member of Altos Hybrid 4, L.P. 2021-03-04 Anthony P Lee, Managing Member of Altos Hybrid 4 GP, LLC, the Manager of Altos Hybrid CC, LLC 2021-03-04 Anthony P Lee, Managing Member of Altos Hybrid 4 GP, LLC, the Manager of Altos Hybrid HG, LLC 2021-03-04 Anthony P Lee, Managing Director of Altos Hybrid 4 GP, LLC, the Manager of Altos Hybrid UP, LLC 2021-03-04 Han Kim 2021-03-04 Hodong Nam 2021-03-04