Company: SNPS
Filing Date: 2025-09-18
Form Type: 8-K/A
Source: 0001193125-25-207472
Chunk: 1

Company: SYNOPSYS INC
Filing Date: 2025-09-18
Form: 8-K/A
Chunk 1
---
 if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Explanatory Note This current report on Form 8-K/A(this “ Amendment”) amends the current report on Form 8-Kfiled by Synopsys, Inc. (“ Synopsys”) with the Securities and Exchange Commission on July 17, 2025 (the “ Original 8-K”). The sole purpose of this Amendment is to update the disclosure under “Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers” of the Original 8-Kto include additional disclosure regarding Mr. Vijayaraghavan’s appointment to a committee of Synopsys’ Board of Directors (the “ Board”). No other changes are being made to the Original 8-K.

| Item 5.02 | Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. |

As previously reported in the Original 8-K,on July 17, 2025, the Board appointed Mr. Vijayaraghavan as a member of the Board. On September 17, 2025, the Board appointed Mr. Vijayaraghavan to serve as a member of the Corporate Governance and Nominating Committee.

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

| Dated: September 18, 2025 |     | SYNOPSYS, INC. 
 By:            |     | /s/ JANET LEE                           |
|:--------------------------|:----|:---------------|:----|:----------------------------------------|
|                           |     |                |     | Janet Lee                               |
|                           |     |                |     | General Counsel and Corporate Secretary |