X0508 4 2025-12-18 0 0001315098 Roblox Corp RBLX 0001834991 Baszucki David C/O ROBLOX CORPORATION 3150 S. DELAWARE ST. SAN MATEO CA 94403 1 1 1 0 President & CEO 1 Class A Common Stock 2025-12-18 4 S 0 9056 83.972 D 976366 I See Footnote Class A Common Stock 2025-12-18 4 S 0 7862 85.0233 D 968504 I See Footnote Class A Common Stock 2025-12-18 4 S 0 3854 85.8605 D 964650 I See Footnote Class A Common Stock 2025-12-18 4 S 0 62 87.1321 D 964588 I See Footnote Class A Common Stock 2025-12-18 4 G 0 22688 0 D 941900 I See Footnote Class A Common Stock 2025-12-18 4 G 0 46062 0 D 895838 I See Footnote Class A Common Stock 2025-12-18 4 G 0 46062 0 A 46062 I See Footnote Class A Common Stock 2025-12-18 4 S 0 20022 83.972 D 26040 I See Footnote Class A Common Stock 2025-12-18 4 S 0 17381 85.0233 D 8659 I See Footnote Class A Common Stock 2025-12-18 4 S 0 8521 85.8605 D 138 I See Footnote Class A Common Stock 2025-12-18 4 S 0 138 87.1323 D 0 I See Footnote Class A Common Stock 190574 D The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on August 06, 2025. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $83.55 to $84.54, 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. 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. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $84.55 to $85.54, 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 $85.55 to $86.48, 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 $87.12 to $87.17, 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 shares reported in this transaction represent a gift to a charitable organization. Represents a transfer of shares by The Freedom Revocable Trust dated February 28, 2017 as amended to The Baszucki Family Foundation. 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. 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. /s/ Mark Reinstra Attorney-in-Fact for David Baszucki 2025-12-19