144 0001751946 XXXXXXXX LIVE 0000813672 CADENCE DESIGN SYSTEMS, INC. 000-15867 2655 Seely Avenue, Building 5, San Jose CA 95134 4089431234 CHIN-CHI TENG Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

18232 6535442.72 275816000 05/22/2026 NASDAQ Common 05/22/2026 Exercise of Stock Options Issuer N 4000 05/22/2026 Cash Common 08/25/2023 Performance Stock Units Issuer N 14232 08/25/2023 N/A Y 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. The securities to be sold were acquired upon the vesting of performance stock units during the period of 8/25/2023 through 9/15/2025. 05/22/2026 02/20/2026 /s/ Chin-Chi Teng