X0306 4 2021-07-06 0 0001315098 Roblox Corp RBLX 0001607880 Guthrie Michael C/O ROBLOX CORPORATION 970 PARK PLACE SAN MATEO CA 94403 0 1 0 0 Chief Financial Officer Class A Common Stock 2021-07-06 4 M 0 45000 0.53 A 135000 D Class A Common Stock 2021-07-06 4 S 0 14696 85.8637 D 120304 D Class A Common Stock 2021-07-06 4 S 0 25004 86.7523 D 95300 D Class A Common Stock 2021-07-06 4 S 0 4800 87.8775 D 90500 D Class A Common Stock 2021-07-06 4 S 0 500 88.4943 D 90000 D Stock Option (Right to Buy) 0.53 2021-07-06 4 M 0 45000 0.00 D 2028-02-05 Class A Common Stock 45000 2043530 D 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. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on March 20, 2021. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $85.36 to $86.32, 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 $86.36 to $87.32, 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 $87.37 to $88.33, 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 $88.38 to $88.60, 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. 1/4th of the shares subject to the option vested on February 5, 2019, 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. /s/ Mark Reinstra Attorney-in-Fact for Michael J. Guthrie 2021-07-08