144 0001834990 XXXXXXXX LIVE 0001315098 Roblox Corporation 001-39763 3150 South Delaware Street San Mateo CA 94403 8888582569 Greg Baszucki Director Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

8333 471314.48 661635583 04/01/2026 NYSE Common 01/29/2008 Private Acquisition from Issuer or an Affiliate Issuer N 8333 01/29/2008 Cash N 10b5-1 Sales for GREG BASZUCKI

3150 South Delaware Street San Mateo CA 94403

Common 02/27/2026 8333 574817.01 10b5-1 Sales for GREG AND CHRISTINA BASZUCKI LIV TR

3150 South Delaware Street San Mateo CA 94403

Common 02/27/2026 8333 574817.01 04/01/2026 11/28/2025 /s/ Greg Baszucki