X0508 4 2026-02-09 0 0001315098 Roblox Corp RBLX 0001835037 Reinstra Mark C/O ROBLOX CORPORATION 3150 S. DELAWARE ST. SAN MATEO CA 94403 0 1 0 0 Chief Legal Off. & Corp. Sec. 0 Class A Common Stock 2026-02-09 4 M 0 118110 0 A 488642 D Class A Common Stock 2026-02-10 4 S 0 31705 72.6138 D 456937 D Class A Common Stock 2026-02-10 4 S 0 2615 73.1373 D 454322 D Class A Common Stock 120272 I See footnote Class A Common Stock 33538 I See footnote Class A Common Stock 16653 I See Footnote Class A Common Stock 33538 I See footnote Class A Common Stock 16653 I See Footnotes Performance Stock Unit 2026-02-09 4 M 0 118110 0 D Class A Common Stock 118110 0 D Upon certification by the Issuer's Leadership Development and Compensation Committee on February 9, 2026 of the achievement of certain performance criteria, 79,132 performance stock units ("PSUs") vested. The remaining PSUs will vest on May 20, 2026 (9,745 PSUs), August 20, 2026 (9,744 PSUs), November 20, 2026 (9,744 PSUs), and February 20, 2027 (9,745 PSUs), in each case subject to the Reporting Person's continued service. Each Performance Stock Unit ("PSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock. 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. Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of performance stock units ("PSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $72.01 to $73.00, 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. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $73.01 to $73.27, 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. These shares are held directly by the San Domenico Trust dated August 12, 1999 for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership over the securities held by the trust. These shares are held directly by the Mark L. Reinstra 2023 Annuity Trust for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust. These shares are held directly by the Mark L. Reinstra 2022 Annuity Trust for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust. These shares are held directly by the Susan P. Reinstra 2023 Annuity Trust for which the Reporting Person serves as trustee. The spouse of the Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust. These shares are held directly by the Susan P. Reinstra 2022 Annuity Trust for which the Reporting Person serves as trustee. The spouse of the Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust. The vesting of the performance stock units ("PSUs") was subject to satisfying both a performance-based requirement and a service-based requirement. The performance-based requirement was satisfied based on the achievement of certain cumulative Bookings and EBITDA targets by the Issuer between January 1, 2024 and December 31, 2025, as certified by the Issuer's Leadership Development and Compensation Committee on February 9, 2026. Following certification, 67% of the PSUs vested immediately on February 9, 2026. The remaining 33% of the PSUs will vest in approximately equal quarterly installments on May 20, 2026, August 20, 2026, November 20, 2026, and February 20, 2027, in each case subject to the Reporting Person's continued service. /s/ Adele Freedman Attorney-in-Fact for Mark Reinstra 2026-02-11