X0306 4 2021-06-14 0 0001315098 Roblox Corp RBLX 0001834992 Donato Craig C/O ROBLOX CORPORATION 970 PARK PLACE SAN MATEO CA 94403 0 1 0 0 Chief Business Officer Class A Common Stock 2021-06-14 4 S 0 10283 88.1282 D 1520084 D Class A Common Stock 2021-06-14 4 S 0 7452 89.1567 D 1512632 D Class A Common Stock 2021-06-14 4 S 0 5565 89.9646 D 1507067 D Class A Common Stock 2021-06-14 4 S 0 1100 91.2536 D 1505967 D Class A Common Stock 2021-06-14 4 S 0 600 92.6133 D 1505367 D Class A Common Stock 2021-06-14 4 S 0 18332 88.1402 D 481668 I See Footnotes Class A Common Stock 2021-06-14 4 S 0 13755 89.1477 D 467913 I See Footnotes Class A Common Stock 2021-06-14 4 S 0 9889 90.00 D 458024 I See Footnotes Class A Common Stock 2021-06-14 4 S 0 1701 91.2369 D 456323 I See Footnotes Class A Common Stock 2021-06-14 4 S 0 1323 92.3959 D 455000 I See Footnotes The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on March 23, 2021. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $87.60 to $88.56, 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. 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 price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $88.60 to $89.54, 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 $89.64 to $90.62, 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 $90.70 to $91.61, 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 $92.61 to $92.62, 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 $87.60 to $88.56, 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 Donato Generation Skipping Trust dtd 09/04/2020 for which the Reporting Person and his spouse serve as trustees. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Trust. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $88.64 to $89.61, 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 $89.64 to $90.56, 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 $90.69 to $91.68, 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 $92.18 to $92.61, 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. /s/ Mark Reinstra Attorney-in-Fact for Craig Donato 2021-06-16