X0306 4 2020-05-22 0 0000883241 SYNOPSYS INC SNPS 0001249834 CHAN CHI-FOON 690 EAST MIDDLEFIELD ROAD MOUNTAIN VIEW CA 94043 1 1 0 0 Co-CEO & President Common Stock 2020-05-22 4 S 0 5582 170.0118 D 197578 D The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan. Represents a weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from $167.32 to $171.28. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range. By: POA pursuant Christina Escalante-Dutra For: Chi-Foon Chan 2020-05-26