X0609 4 2026-08-31 0 0000883241 SYNOPSYS INC SNPS 0001249802 DE GEUS AART false 675 ALMANOR AVENUE SUNNYVALE CA 94085 1 1 0 0 EXECUTIVE CHAIR 1 Common Stock 2026-08-31 4 M 0 25000 135.88 A 145421 D Common Stock 2026-08-31 4 S 0 25000 441.7646 D 120421 D Common Stock 2026-08-31 5 J 0 22 360.961 A 120443 D Common Stock 2026-09-01 4 M 0 24641 135.88 A 145084 D Common Stock 2026-09-01 4 S 0 24641 419.4401 D 120443 D Common Stock 308791 I by Family Trust Common Stock 14500 I by Partnership Non-Qualified Stock Option (right to buy) 135.88 2026-08-31 4 M 0 25000 0.0 D 2020-12-12 2026-12-12 Common Stock 25000 24641 D Non-Qualified Stock Option (right to buy) 135.88 2026-09-01 4 M 0 24641 0.0 D 2020-12-12 2026-12-12 Common Stock 24641 0 D Represents a weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from $435.88 to $445.70. 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. Acquisition of stock under Synopsys, Inc Employee Stock Purchase Plan Represents a weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from $413.99 to $430.26. 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. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan that was adopted October 14, 2025. By: POA pursuant Mary Lai For: Aart de Geus 2026-09-02