144 0002031609 XXXXXXXX LIVE 0000813672 CADENCE DESIGN SYSTEMS, INC. 000-15867 2655 Seely Avenue, Building 5, San Jose CA 95134 4089431234 PAUL SCANNELL Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

7966 2986692.38 275816000 06/01/2026 NASDAQ Common 06/01/2026 Exercise of Stock Options Issuer N 7966 06/01/2026 Cash N 10b5-1 Sales for PAUL SCANNELL

2655 Seely Avenue, Building 5, San Jose CA 95134

Common 05/18/2026 1071 369559.26 10b5-1 Sales for PAUL SCANNELL

2655 Seely Avenue, Building 5, San Jose CA 95134

Common 05/01/2026 10500 3559500.00 The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale. 06/01/2026 09/09/2025 /s/ Paul Scannell