X0306 4 2021-06-01 0 0001315098 Roblox Corp RBLX 0001835042 Sturman Daniel C/O ROBLOX CORPORATION 970 PARK PLACE SAN MATEO CA 94403 0 1 0 0 Chief Technology Officer Class A Common Stock 2021-06-01 4 M 0 42658 3.405 A 101394 D Class A Common Stock 2021-06-01 4 S 0 41658 93.7047 D 59736 D Class A Common Stock 2021-06-01 4 S 0 1000 94.69 D 58736 D Class A Common Stock 2021-06-02 4 M 0 42658 3.405 A 101394 D Class A Common Stock 2021-06-02 4 S 0 42658 100.0095 D 58736 D Class A Common Stock 151983 I See Footnotes Class A Common Stock 151983 I See Footnotes Stock Option (Right to Buy) 3.405 2021-06-01 4 M 0 42658 0.00 D 2030-01-19 Class A Common Stock 42658 1194641 D Stock Option (Right to Buy) 3.405 2021-06-02 4 M 0 42658 0.00 D 2030-01-29 Class A Common Stock 42658 1151983 D All of the sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on March 22, 2021. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $93.27 to $94.14, 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 $100.00 to $100.27, 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 Mo Red LLC, a Delaware limited liability company for which the Reporting Person serves as manager. The Reporting Person may be deemed to have beneficial ownership over the securities held by the limited liability company. These shares are held directly by Lucy Simon LLC, a Delaware limited liability company for which the spouse of the Reporting Person serves as manager. The spouse of the Reporting Person may be deemed to have beneficial ownership of the securities held by the limited liability company. 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 vest date. /s/ Mark Reinstra Attorney-in-Fact for Daniel Sturman 2021-06-03