X0508 4 2022-08-02 0 0001315098 Roblox Corp RBLX 0001465391 Mastantuono Gina C/O ROBLOX CORPORATION 3150 S. DELAWARE ST. SAN MATEO CA 94403 1 0 0 0 0 Class A Common Stock 2022-08-02 4 P 0 9 46.1856 A 16632 D Class A Common Stock 2022-10-04 4 S 0 9 38.68 D 16623 D Class A Common Stock 2023-03-03 4 P 0 13 41.13 A 16636 D Class A Common Stock 2023-05-04 4 S 0 13 33.975 D 16623 D The shares were inadvertently acquired by a third party pursuant to the Reporting Person's managed tax harvesting account, which included shares of the Issuer among shares of other public companies within an existing stock index. Such acquisitions were only recently discovered. 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 shares were inadvertently sold by a third party pursuant to the Reporting Person's managed tax harvesting account, which included shares of the Issuer among shares of other public companies within an existing stock index. Such sales were only recently discovered. /s/ Adele Freedman Attorney-in-Fact for Gina Mastantuono 2026-02-13