144 0001834991 XXXXXXXX LIVE 0001315098 Roblox Corporation 001-39763 3150 South Delaware Street San Mateo CA 94403 8888582569 DAVID BRENT BASZUCKI Director Officer 10% Stockholder Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

1445 88246.15 618997327 02/25/2025 NYSE Common 02/25/2025 Exercise of Stock Options Issuer N 1445 02/25/2025 Cash N DAVID BRENT BASZUCKI

3150 South Delaware Street San Mateo CA 94403

Common 02/20/2025 6448 395478.41 DAVID BRENT BASZUCKI

3150 South Delaware Street San Mateo CA 94403

Common 02/03/2025 8916 631992.83 10b5-1 Sales for DAVID BRENT BASZUCKI

3150 South Delaware Street San Mateo CA 94403

Common 01/31/2025 89163 6390624.28 DAVID BRENT BASZUCKI

3150 South Delaware Street San Mateo CA 94403

Common 01/31/2025 13855 985252.60 10b5-1 Sales for DAVID BRENT BASZUCKI

3150 South Delaware Street San Mateo CA 94403

Common 01/30/2025 138555 9923960.31 DAVID BRENT BASZUCKI

3150 South Delaware Street San Mateo CA 94403

Common 12/06/2024 33333 1973223.60 10b5-1 Sales for DAVID BRENT BASZUCKI

3150 South Delaware Street San Mateo CA 94403

Common 12/05/2024 333334 19102638.21 02/25/2025 11/04/2024 /s/ David Baszucki