RBLX

SEC source: 0001415889-24-003612 · form4-02132024_110210.xml · nonDerivative · entry 2

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures IV Liquidity Fund, L.P. · CIK 0001766317 · 10% owner

Altos Ventures IV Reserve Fund, L.P. · CIK 0001766268 · 10% owner

Altos Roblox SPV 1, LLC · CIK 0001747201 · 10% owner

Altos Roblox SPV 2, LLC · CIK 0001747200 · 10% owner

Altos Ventures Management, Inc. · CIK 0001881755 · 10% owner

Altos Roblox SPV 2020, LLC · CIK 0001803466 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 15,591,659

F5 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Ventures IV Liquidity Fund, L.P. to its partners.

F3 · ownership.nature: The general partner of Altos Ventures IV, L.P. is Altos Management Partners IV, LLC; the general partner of Altos Ventures IV Liquidity Fund, L.P. and Altos Ventures IV Reserve Fund, L.P. is Altos IV LR GP, LLC; the manager of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners, LLC; and the manager of Altos Roblox SPV 2020, LLC is Altos Roblox Management Partners, LLC (collectively, the "General Partners").

F4 · ownership.nature: 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 is a director of the Issuer and 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 pecuniary interest therein, if any.

F5 · ownership.nature: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Ventures IV Liquidity Fund, L.P. to its partners.

SEC source: 0001415889-24-003612 · form4-02132024_110210.xml · nonDerivative · entry 1

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures IV Liquidity Fund, L.P. · CIK 0001766317 · 10% owner

Altos Ventures IV Reserve Fund, L.P. · CIK 0001766268 · 10% owner

Altos Roblox SPV 1, LLC · CIK 0001747201 · 10% owner

Altos Roblox SPV 2, LLC · CIK 0001747200 · 10% owner

Altos Ventures Management, Inc. · CIK 0001881755 · 10% owner

Altos Roblox SPV 2020, LLC · CIK 0001803466 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 8,644,933

F1 · kind: Represents a pro-rata in kind distribution of the Issuer's Class A Common Stock by Altos Ventures IV, L.P. to its partners

F2 · ownership.nature: These shares are held directly by Altos Ventures IV, L.P.

F3 · ownership.nature: The general partner of Altos Ventures IV, L.P. is Altos Management Partners IV, LLC; the general partner of Altos Ventures IV Liquidity Fund, L.P. and Altos Ventures IV Reserve Fund, L.P. is Altos IV LR GP, LLC; the manager of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners, LLC; and the manager of Altos Roblox SPV 2020, LLC is Altos Roblox Management Partners, LLC (collectively, the "General Partners").

F4 · ownership.nature: 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 is a director of the Issuer and 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 pecuniary interest therein, if any.

SEC source: 0001415889-24-003613 · form4-02132024_110200.xml · nonDerivative · entry 4

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 473,229

F3 · kind: Represents shares of the Issuer's Class A Common Stock received by the Reporting Person in distributions from Altos Roblox SPV 2020, LLC.

F6 · ownership.nature: These shares are held directly by Nam-MacGill Investments, LLC - Sub Fund No. 1 for which Mr. Nam serves as managing member. Mr. Nam disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0001415889-24-003613 · form4-02132024_110200.xml · nonDerivative · entry 3

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,362,851

F1 · kind: Represents shares of the Issuer's Class A Common Stock received by the reporting person in distributions from Altos Ventures IV, L.P., Altos Ventures IV Liquidity Fund, L.P., Altos Ventures IV Reserve Fund, L.P., Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC.

F5 · ownership.nature: These shares are held directly by the Nam-MacGill 2006 Family Trust for which Mr. Nam serves as trustee. Mr. Nam disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0001415889-24-003613 · form4-02132024_110200.xml · nonDerivative · entry 2

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 473,231

F3 · kind: Represents shares of the Issuer's Class A Common Stock received by the Reporting Person in distributions from Altos Roblox SPV 2020, LLC.

F4 · ownership.nature: These shares are held directly by Han Family Investments, LLC - Sub Fund No. 1 which Mr. Kim serves as Managing Member. Mr. Kim disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.

SEC source: 0001415889-24-003613 · form4-02132024_110200.xml · nonDerivative · entry 1

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,087,598

F1 · kind: Represents shares of the Issuer's Class A Common Stock received by the reporting person in distributions from Altos Ventures IV, L.P., Altos Ventures IV Liquidity Fund, L.P., Altos Ventures IV Reserve Fund, L.P., Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC.

F2 · ownership.nature: These shares are held directly by The Kim Living Trust for which Mr. Kim serves as trustee, Mr. Kim disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.

SEC source: 0001415889-24-003614 · form4-02132024_110228.xml · nonDerivative · entry 2

Lee Anthony P · CIK 0001834988 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 473,228

F3 · kind: Represents receipt of shares in a pro-rata distribution of the Issuer's Class A Common Stock by Altos Roblox SPV 2, LLC to its partners.

F4 · ownership.nature: These shares are held directly by Fallen Leaf LLC - Sub Fund No. 1 for which the reporting person serves as managing member. The reporting person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.

SEC source: 0001415889-24-003614 · form4-02132024_110228.xml · nonDerivative · entry 1

Lee Anthony P · CIK 0001834988 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,430,878

F1 · kind: Represents shares received by the reporting person in pro-rata in kind distributions of the Issuer's Class A Common Stock from Altos Ventures IV, L.P., Altos Ventures IV Liquidity Fund, LP, Altos Ventures IV Reserve Fund, LP, Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC.

F2 · ownership.nature: These shares are held directly by Fallen Leaf Revocable Trust for which the reporting person serves as trustee. The reporting person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · derivative · entry 17

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 934,730

Underlying: Class A Common Stock · 200,000 shares

Expires 2026-03-21

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.

F11 · derivative.exercise_date: All of the shares subject to the option are fully vested and exercisable as of the date hereof.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · nonDerivative · entry 8

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

F3 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $44.38 to $44.59, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F7 · ownership.nature: These shares are held by The Baszucki Family Foundation. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Foundation.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · nonDerivative · entry 7

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 7,296

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

F2 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $43.38 to $44.375, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F7 · ownership.nature: These shares are held by The Baszucki Family Foundation. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Foundation.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · nonDerivative · entry 6

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 40,000

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

F6 · kind: Represents a transfer of shares by the Freedom Revocable Trust dated February 28, 2017 as amended to The Baszucki Family Foundation.

F7 · ownership.nature: These shares are held by The Baszucki Family Foundation. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Foundation.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · nonDerivative · entry 5

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 885,001

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

F6 · kind: Represents a transfer of shares by the Freedom Revocable Trust dated February 28, 2017 as amended to The Baszucki Family Foundation.

F5 · ownership.nature: These shares are held directly by The Freedom Revocable Trust dated February 28, 2017 as amended, and for which the reporting person serves as trustee.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · nonDerivative · entry 4

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 925,001

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

F4 · kind: The shares reported in this transaction represent a gift to a charitable organization.

F5 · ownership.nature: These shares are held directly by The Freedom Revocable Trust dated February 28, 2017 as amended, and for which the reporting person serves as trustee.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · nonDerivative · entry 3

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

F3 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $44.38 to $44.59, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · nonDerivative · entry 2

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,480

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

F2 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $43.38 to $44.375, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001315098-24-000015 · wk-form4_1707863057.xml · nonDerivative · entry 1

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,001

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 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

SEC source: 0001315098-24-000008 · wk-form4_1706737770.xml · nonDerivative · entry 1

Rawlings Amy Marie · CIK 0001875017 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,902

F1 · shares: These securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. 1/12th of the RSUs shall vest on February 20, 2024 and 1/12th of the RSUs shall vest quarterly thereafter, subject to the Reporting Person continuing as a service provider through each such date.

F2 · balance_after: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-24-000006 · wk-form4_1706737661.xml · derivative · entry 4

Sturman Daniel · CIK 0001835042 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 753,563

Underlying: Class A Common Stock · 29,368 shares

Expires 2030-01-29

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.

F4 · derivative.exercise_date: 1/48th of the shares subject to the option vested on February 17, 2020, and 1/48th of the shares subject to the option vest each month thereafter, subject to the Reporting Person continuing as a service provider through each such date.

SEC source: 0001315098-24-000006 · wk-form4_1706737661.xml · nonDerivative · entry 1

Sturman Daniel · CIK 0001835042 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 511,545

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 · balance_after: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-24-000004 · wk-form4_1706303688.xml · nonDerivative · entry 2

Baszucki Gregory · CIK 0001834990 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 9,786,603

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on November 28, 2022.

F4 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $41.74 to $41.80, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: These shares are held of record by the Greg and Christina Baszucki Living Trust dtd 08/18/2006 of which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the shares held by the Trust.

SEC source: 0001315098-24-000004 · wk-form4_1706303688.xml · nonDerivative · entry 1

Baszucki Gregory · CIK 0001834990 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 9,786,803

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on November 28, 2022.

F2 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $40.70 to $41.64, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: These shares are held of record by the Greg and Christina Baszucki Living Trust dtd 08/18/2006 of which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the shares held by the Trust.

SEC source: 0001315098-24-000002 · wk-form4_1705612139.xml · derivative · entry 8

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 424,528

Underlying: Class A Common Stock · 4,000 shares

Expires 2030-12-09

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.

F8 · derivative.exercise_date: 1/4th of the shares subject to the option became vested and exercisable on December 4, 2020, and 1/48th of the shares subject to the option vest each month thereafter, subject to the Reporting Person continuing as a service provider through each such date.

SEC source: 0001315098-24-000002 · wk-form4_1705612139.xml · nonDerivative · entry 2

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 258,310

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 24, 2023.

F1 · ownership.direct: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-24-000002 · wk-form4_1705612139.xml · nonDerivative · entry 1

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 262,310

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 · ownership.direct: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001104659-25-016648 · tm257476-1_4seq1.xml · nonDerivative · entry 21

Bronstein Manuel · CIK 0001847776 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 659,172

F3 · kind: The shares were inadvertently sold by a third party pursuant to the Reporting Person's direct indexing account, which included shares of the Issuer among shares of other public companies within an existing stock index. Such sales were only recently discovered.

F2 · balance_after: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-23-000209 · wk-form4_1703801640.xml · nonDerivative · entry 1

Baszucki Gregory · CIK 0001834990 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 9,794,936

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on November 28, 2022.

F2 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $46.26 to $46.91, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: These shares are held of record by the Greg and Christina Baszucki Living Trust dtd 08/18/2006 of which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the shares held by the Trust.

SEC source: 0001315098-23-000206 · wk-form4_1703639761.xml · derivative · entry 7

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 428,528

Underlying: Class A Common Stock · 29,368 shares

Expires 2030-12-09

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.

F7 · derivative.exercise_date: 1/4th of the shares subject to the option became vested and exercisable on December 4, 2020, and 1/48th of the shares subject to the option vest each month thereafter, subject to the Reporting Person continuing as a service provider through each such date.

SEC source: 0001315098-23-000206 · wk-form4_1703639761.xml · nonDerivative · entry 1

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 258,310

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 · ownership.direct: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-23-000207 · wk-form4_1703639800.xml · derivative · entry 6

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,134,730

Underlying: Class A Common Stock · 103,846 shares

Expires 2026-03-21

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.

F7 · derivative.exercise_date: All of the shares subject to the option are fully vested and exercisable as of the date hereof.

SEC source: 0001315098-23-000207 · wk-form4_1703639800.xml · nonDerivative · entry 3

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 945,001

F3 · kind: The shares reported in this transaction represent a gift to a charitable organization.

F4 · ownership.nature: These shares are held directly by The Freedom Revocable Trust dated February 28, 2017 as amended, and for which the reporting person serves as trustee.

SEC source: 0001315098-23-000207 · wk-form4_1703639800.xml · nonDerivative · entry 2

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

F2 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $46.00 to $46.08, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001315098-23-000207 · wk-form4_1703639800.xml · nonDerivative · entry 1

Baszucki David · CIK 0001834991 · Director · President & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,847

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 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 17, 2023.

SEC source: 0001315098-23-000203 · wk-form4_1703192884.xml · derivative · entry 9

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 457,896

Underlying: Class A Common Stock · 4,000 shares

Expires 2030-12-09

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.

F10 · derivative.exercise_date: 1/4th of the shares subject to the option became vested and exercisable on December 4, 2020, and 1/48th of the shares subject to the option vest each month thereafter, subject to the Reporting Person continuing as a service provider through each such date.

SEC source: 0001315098-23-000203 · wk-form4_1703192884.xml · nonDerivative · entry 3

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 228,942

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 24, 2023.

F4 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $44.83 to $45.06, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F1 · ownership.direct: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-23-000203 · wk-form4_1703192884.xml · nonDerivative · entry 2

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 230,142

F2 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 24, 2023.

F3 · price: The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $43.81 to $44.80, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F1 · ownership.direct: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-23-000203 · wk-form4_1703192884.xml · nonDerivative · entry 1

Reinstra Mark · CIK 0001835037 · Gen. Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 232,942

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 · ownership.direct: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-23-000199 · wk-form4_1702935271.xml · nonDerivative · entry 1

Rawlings Amy Marie · CIK 0001875017 · Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 93,773

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on August 28, 2023.

F2 · ownership.direct: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001315098-23-000201 · wk-form4_1702935413.xml · nonDerivative · entry 1

Bronstein Manuel · CIK 0001847776 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 732,588

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 24, 2023.

F2 · ownership.direct: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001209191-23-057959 · doc4.xml · nonDerivative · entry 8

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures Management, Inc. · CIK 0001881755 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 428,996

F4 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Roblox SPV 2, LLC to its partners.

F12 · ownership.nature: These shares are held directly by Han Family Investments, LLC - Sub Fund No. 1 which Mr. Kim serves as Managing Member. Mr. Kim disclaims beneficial ownership of the shares except to the extent of pecuniary interest therein.

SEC source: 0001209191-23-057959 · doc4.xml · nonDerivative · entry 7

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures Management, Inc. · CIK 0001881755 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,707,400

F6 · kind: Represents shares of the Issuer's Class A Common Stock received by the reporting person in distributions from Altos Ventures IV, L.P., Altos Ventures IV Liquidity Fund, LP, Altos Ventures IV Reserve Fund, LP, Altos Roblox SPV 1, LLC, Altos Roblox SPV 2, LLC, Altos Hybrid 2, L.P.

F11 · ownership.nature: These shares are held directly by The Kim Living Trust for which Mr. Kim serves as trustee. Mr. Kim disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.

SEC source: 0001209191-23-057959 · doc4.xml · nonDerivative · entry 3

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures Management, Inc. · CIK 0001881755 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,982,653

F6 · kind: Represents shares of the Issuer's Class A Common Stock received by the reporting person in distributions from Altos Ventures IV, L.P., Altos Ventures IV Liquidity Fund, LP, Altos Ventures IV Reserve Fund, LP, Altos Roblox SPV 1, LLC, Altos Roblox SPV 2, LLC, Altos Hybrid 2, L.P.

F7 · ownership.nature: These shares are held 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.

SEC source: 0001209191-23-057959 · doc4.xml · nonDerivative · entry 2

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures Management, Inc. · CIK 0001881755 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 428,993

F4 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Roblox SPV 2, LLC to its partners.

F5 · ownership.nature: These shares are directly by Nam-MacGill Investments, LLC - Sub Fund No. 1 for which Mr. Nam serves as Managing Member. Mr. Nam disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0001209191-23-057959 · doc4.xml · nonDerivative · entry 1

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures Management, Inc. · CIK 0001881755 · 10% owner

Nam Hodong · CIK 0001836648 · 10% owner

Kim Han · CIK 0001836652 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 135,698

F1 · kind: Represents shares of the Issuer's Class A Common Stock received by the reporting person in distributions from Altos Roblox SPV 1, LLC and Altos Roblox SPV 2020, LLC.

F2 · ownership.nature: These shares are held directly by Altos Ventures Management Inc.

F3 · ownership.nature: The members of the Board of Directors of Altos Ventures Management, Inc. (AVMI) are Anthony P. Lee, Hodong Nam and Han Kim, who exercise voting and investment control over the shares. Each member of the Board of Directors of AVMI disclaim beneficial ownership of the shares except to the extent of their pecuniary interest therein.

SEC source: 0001209191-23-057951 · doc4.xml · nonDerivative · entry 7

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures IV Liquidity Fund, L.P. · CIK 0001766317 · 10% owner

Altos Ventures IV Reserve Fund, L.P. · CIK 0001766268 · 10% owner

Altos Roblox SPV 1, LLC · CIK 0001747201 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 8,033,742

F15 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Roblox SPV 2020, LLC to its partners.

F3 · ownership.nature: The general partner of Altos Hybrid 2, L.P. is Altos Hybrid 2 GP, LLC; the general partner of Altos Hybrid 4, L.P. is Altos Hybrid 4 GP, LLC; the general partner of Altos Ventures IV, L.P. is Altos Management Partners IV, LLC; the general partner of Altos Ventures IV Liquidity Fund, L.P. and Altos Ventures IV Reserve Fund, L.P. is Altos IV LR GP, LLC; the general partner of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners, LLC; and the general partner of Altos Roblox SPV 2020, LLC is Altos Roblox 2020 Management Partners, LLC (collectively, the "General Partners").

F4 · ownership.nature: 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 pecuniary interest therein, if any.

F16 · ownership.nature: These shares are held directly by Altos Roblox SPV 2020, LLC.

SEC source: 0001209191-23-057951 · doc4.xml · nonDerivative · entry 6

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures IV Liquidity Fund, L.P. · CIK 0001766317 · 10% owner

Altos Ventures IV Reserve Fund, L.P. · CIK 0001766268 · 10% owner

Altos Roblox SPV 1, LLC · CIK 0001747201 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 192,722

F13 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Hybrid 2, L.P. to its partners.

F3 · ownership.nature: The general partner of Altos Hybrid 2, L.P. is Altos Hybrid 2 GP, LLC; the general partner of Altos Hybrid 4, L.P. is Altos Hybrid 4 GP, LLC; the general partner of Altos Ventures IV, L.P. is Altos Management Partners IV, LLC; the general partner of Altos Ventures IV Liquidity Fund, L.P. and Altos Ventures IV Reserve Fund, L.P. is Altos IV LR GP, LLC; the general partner of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners, LLC; and the general partner of Altos Roblox SPV 2020, LLC is Altos Roblox 2020 Management Partners, LLC (collectively, the "General Partners").

F4 · ownership.nature: 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 pecuniary interest therein, if any.

F14 · ownership.nature: These shares are held directly by Altos Hybrid 2, L.P.

SEC source: 0001209191-23-057951 · doc4.xml · nonDerivative · entry 5

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures IV Liquidity Fund, L.P. · CIK 0001766317 · 10% owner

Altos Ventures IV Reserve Fund, L.P. · CIK 0001766268 · 10% owner

Altos Roblox SPV 1, LLC · CIK 0001747201 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,613,506

F11 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Roblox SPV 2, LLC to its partners.

F3 · ownership.nature: The general partner of Altos Hybrid 2, L.P. is Altos Hybrid 2 GP, LLC; the general partner of Altos Hybrid 4, L.P. is Altos Hybrid 4 GP, LLC; the general partner of Altos Ventures IV, L.P. is Altos Management Partners IV, LLC; the general partner of Altos Ventures IV Liquidity Fund, L.P. and Altos Ventures IV Reserve Fund, L.P. is Altos IV LR GP, LLC; the general partner of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners, LLC; and the general partner of Altos Roblox SPV 2020, LLC is Altos Roblox 2020 Management Partners, LLC (collectively, the "General Partners").

F4 · ownership.nature: 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 pecuniary interest therein, if any.

F12 · ownership.nature: These shares are held directly by Altos Roblox SPV 2, LLC.

SEC source: 0001209191-23-057951 · doc4.xml · nonDerivative · entry 4

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures IV Liquidity Fund, L.P. · CIK 0001766317 · 10% owner

Altos Ventures IV Reserve Fund, L.P. · CIK 0001766268 · 10% owner

Altos Roblox SPV 1, LLC · CIK 0001747201 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,535,227

F9 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Roblox SPV 1, LCC to its partners.

F3 · ownership.nature: The general partner of Altos Hybrid 2, L.P. is Altos Hybrid 2 GP, LLC; the general partner of Altos Hybrid 4, L.P. is Altos Hybrid 4 GP, LLC; the general partner of Altos Ventures IV, L.P. is Altos Management Partners IV, LLC; the general partner of Altos Ventures IV Liquidity Fund, L.P. and Altos Ventures IV Reserve Fund, L.P. is Altos IV LR GP, LLC; the general partner of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners, LLC; and the general partner of Altos Roblox SPV 2020, LLC is Altos Roblox 2020 Management Partners, LLC (collectively, the "General Partners").

F4 · ownership.nature: 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 pecuniary interest therein, if any.

F10 · ownership.nature: These shares are held directly by Altos Roblox SPV 1, LLC.

SEC source: 0001209191-23-057951 · doc4.xml · nonDerivative · entry 3

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures IV Liquidity Fund, L.P. · CIK 0001766317 · 10% owner

Altos Ventures IV Reserve Fund, L.P. · CIK 0001766268 · 10% owner

Altos Roblox SPV 1, LLC · CIK 0001747201 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 375,764

F7 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Ventures IV Reserve Fund, L.P. to its partners.

F3 · ownership.nature: The general partner of Altos Hybrid 2, L.P. is Altos Hybrid 2 GP, LLC; the general partner of Altos Hybrid 4, L.P. is Altos Hybrid 4 GP, LLC; the general partner of Altos Ventures IV, L.P. is Altos Management Partners IV, LLC; the general partner of Altos Ventures IV Liquidity Fund, L.P. and Altos Ventures IV Reserve Fund, L.P. is Altos IV LR GP, LLC; the general partner of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners, LLC; and the general partner of Altos Roblox SPV 2020, LLC is Altos Roblox 2020 Management Partners, LLC (collectively, the "General Partners").

F4 · ownership.nature: 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 pecuniary interest therein, if any.

F8 · ownership.nature: These shares are held directly by Altos Ventures IV Reserve Fund, L.P.

SEC source: 0001209191-23-057951 · doc4.xml · nonDerivative · entry 2

Altos Ventures IV, L.P. · CIK 0001833040 · 10% owner

Altos Ventures IV Liquidity Fund, L.P. · CIK 0001766317 · 10% owner

Altos Ventures IV Reserve Fund, L.P. · CIK 0001766268 · 10% owner

Altos Roblox SPV 1, LLC · CIK 0001747201 · 10% owner

Altos Hybrid 2, L.P. · CIK 0001694364 · 10% owner

Altos Hybrid 4, L.P. · CIK 0001826414 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,324,065

F5 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A Common Stock by Altos Ventures IV Liquidity Fund, L.P. to its partners.

F3 · ownership.nature: The general partner of Altos Hybrid 2, L.P. is Altos Hybrid 2 GP, LLC; the general partner of Altos Hybrid 4, L.P. is Altos Hybrid 4 GP, LLC; the general partner of Altos Ventures IV, L.P. is Altos Management Partners IV, LLC; the general partner of Altos Ventures IV Liquidity Fund, L.P. and Altos Ventures IV Reserve Fund, L.P. is Altos IV LR GP, LLC; the general partner of Altos Roblox SPV 1, LLC and Altos Roblox SPV 2, LLC is Altos Roblox Management Partners, LLC; and the general partner of Altos Roblox SPV 2020, LLC is Altos Roblox 2020 Management Partners, LLC (collectively, the "General Partners").

F4 · ownership.nature: 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 pecuniary interest therein, if any.

F6 · ownership.nature: These shares are held directly by Altos Ventures IV Liquidity Fund, L.P.