Company: SNPS
Filing Date: 2025-03-05
Form Type: 424B5
Source: 0001140361-25-007235
Chunk: 116

Company: SYNOPSYS INC
Filing Date: 2025-03-05
Form: 424B5
Chunk 116
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 delivery of this prospectus or any sale of the securities offered hereby.

This prospectus is part of a registration statement that we filed with the SEC, using a “shelf” registration process under the Securities Act relating to the securities to be offered. This prospectus does not contain all of the information set forth in the registration statement, certain parts of which are omitted in accordance with the rules and regulations of the SEC. Statements contained herein concerning any document filed as an exhibit are not necessarily complete, and, in each instance, reference is made to the copy of such document filed as an exhibit to the registration statement. Each such statement is qualified in its entirety by such reference.

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TABLE OF CONTENTS

$10,000,000,000 SYNOPSYS, INC. $1,000,000,000 4.550% Senior Notes due 2027 $1,000,000,000 4.650% Senior Notes due 2028 $2,000,000,000 4.850% Senior Notes due 2030 $1,500,000,000 5.000% Senior Notes due 2032 $2,400,000,000 5.150% Senior Notes due 2035 $2,100,000,000 5.700% Senior Notes due 2055 PROSPECTUS SUPPLEMENT March 3, 2025 Joint Book-Running Managers BofA Securities HSBC J.P. Morgan

| Mizuho |     | Scotiabank |     | TD Securities |     | Truist     
 Securities |     | Wells Fargo 
 Securities  |

| (Book-running           
 manager for 2032 notes, 
 2035 notes and          
 2055 notes)             |     | -Book-running              
 manager for 2027 notes and 
 2028 notes                 |     | -Book-running              
 manager for 2027 notes and 
 2028 notes                 |     | -Book-running           
 manager for 2030 notes, 
 2032 notes and          
 2055 notes              |     | -Book-running              
 manager for 2030 notes and 
 2035 notes                 |

Co-Managers

| Evercore ISI |     | MUFG |     | PNC Capital Markets LLC |     | US Bancorp |