Company: SNPS
Filing Date: 2025-07-17
Form Type: 425
Source: 0001140361-25-026144
Chunk: 6

Company: SYNOPSYS INC
Filing Date: 2025-07-17
Form: 425
Chunk 6
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.1 and 3.2, respectively, and are incorporated herein by reference.

| Item9.01 | Financial Statements and Exhibits. |

(d) Exhibits.

| Exhibit 
 Number  
 2.1*    |     | Description                                                                                                                                                    
 Agreement and Plan of Merger, dated as of January 15, 2024, by and among Synopsys, Inc., ANSYS, Inc., and ALTA Acquisition Corp. (incorporated by reference to 
 Exhibit 2.1 to the Current Report on Form 8-K filed by ANSYS, Inc. with the SEC on January 16, 2024).                                                          |
|:--------|:----|:---------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 3.1     |     | Restated Certificate of Incorporation of ANSYS, Inc.                                                                                                           |
| 3.2     |     | Amended and Restated Bylaws of ANSYS, Inc.                                                                                                                     |
| 104     |     | Cover Page Interactive Data File (embedded within the Inline XBRL document).                                                                                   |

* Schedules have been omitted pursuant to Item 601(a)(5) of Regulation S-K. ANSYS, Inc. hereby undertakes to furnish supplementally a copy of any omitted schedule upon request by the SEC. 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.

| Date: July 17, 2025 | ANSYS, INC. |                                              |
|:--------------------|:------------|:---------------------------------------------|
|                     | By:         | /s/ Janet Lee                                |
|                     |             | Name: Janet Lee                              |
|                     |             | Title:   President, Treasurer, and Secretary |

#### EXHIBIT 3.1

### AMENDED & RESTATED CERTIFICATE OF INCORPORATION

#### OF ANSYS, INC.

### ARTICLE ONE
The name of the corporation is ANSYS, Inc. (the “ Company ”).

### ARTICLE TWO
The address of the registered office of the Company in the State of Delaware is 1209 Orange Street, in the City of Wilmington, Zip Code 19801, County of New Castle.
              The name of the Company’s registered agent for service of process in the State of Delaware at such address is The Corporation Trust Company.

### ARTICLE THREE
The purpose of the Company is to engage in any lawful act or