Company: SNPS
Filing Date: 2025-03-03
Form Type: 424B5
Source: 0001140361-25-006661
Chunk: 43

Company: SYNOPSYS INC
Filing Date: 2025-03-03
Form: 424B5
Chunk 43
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 realizing any of the anticipated benefits of completing the Ansys Merger. Further, we have incurred, and will incur, substantial expenses in connection with the negotiation and completion of the Ansys Merger, and those expenses must be paid even if the Ansys Merger is not completed and we do not realize the expected benefits of the Ansys Merger.

This offering is expected to occur prior to, and is not conditioned upon, the consummation of the Ansys Merger.

This offering is not conditioned upon completion of the pending acquisition of Ansys, which, if completed, will occur subsequent to the closing of this offering. We can provide no assurances that the Ansys Merger will occur or that we will realize the expected benefits of the Ansys Merger even if the Ansys Merger is completed.**

<div align='center'>S-25</div>

#### TABLE OF CONTENTS

### USE OF PROCEEDS
We estimate that the net proceeds to us from this offering will be approximately $ , after deducting the underwriting discounts and estimated offering expenses payable by us.

Absent a Special Mandatory Redemption, we intend to use the net proceeds of this offering, as well as our cash on hand, and borrowings under the Term Loan Credit Agreement and the Bridge Commitment, if applicable, to fund part of the cash portion of the merger consideration for the Ansys Merger, to pay related transaction fees and expenses and to repay Ansys’ outstanding indebtedness. Pending such uses, the net proceeds from this offering shall be invested in marketable securities. In the event of a Special Mandatory Redemption, the proceeds of the 20  notes and 20  notes will be used for general corporate purposes, which may include repayment of outstanding indebtedness.

Settlement of this offering is not conditioned upon completion of the pending acquisition of Ansys, which, if completed, will occur subsequent to the closing of this offering. However, if the Ansys Merger is not consummated by the Special Mandatory Redemption End Date or Synopsys otherwise determines not to pursue the consummation of the Ansys Merger, Synopsys will be required to redeem all the outstanding 20  notes, 20  notes, 20  notes and 20  notes. See “Description of the Notes—Special Mandatory Redemption.” The Ansys Merger is currently expected to close in the first half of calendar year 2025. The completion of the Ansys Merger is subject to customary closing