Company: SNPS
Filing Date: 2025-05-28
Form Type: S-8
Source: 0001193125-25-129539
Chunk: 1

Company: SYNOPSYS INC
Filing Date: 2025-05-28
Form: S-8
Chunk 1
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 an additional 1,600,000 shares of common stock, par value of $0.01 per share (“”), issuable to eligible persons under its 2006 Employee Equity Incentive Plan, as
amended (the “”) and (ii) an additional 2,200,000 shares of Common Stock issuable to eligible persons under its Employee Stock Purchase Plan, as amended (the “”).

The Registrant previously filed Form S-8 Registration Statements Nos. 333-134899, 333-157791,333-174587, 333-181875, 333-189019, 333-196428, 333-206458, 333-213246, 333-217177, 333-225237, 333-231761, 333-238629, 333-256387, 333-265121, 333-272097 and 333-279729 relating to shares of Common Stock issuable
under the Equity Incentive Plan (collectively, the “”). The Registrant previously filed Form S-8 Registration Statements Nos. 333-50947, 333-77597, 333-38810, 333-63216, 333-108507, 333-125224, 333-151067, 333-166274, 333-181875, 333-196428, 333-213246, 333-225237, 333-238629 and 333-265121 relating to shares of Common Stock issuable under the ESPP (collectively, the “” and, together with the Prior Equity Incentive Plan
Registration Statements, the “”).

This Registration Statement relates to securities of the same class as
those to which the Prior Registration Statements relate. Pursuant to General Instruction E of Form S-8, the contents of the Prior Registration Statements are incorporated herein by reference, including all
attachments and exhibits thereto, except to the extent supplemented, amended or superseded by the information set forth herein.

2

PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT Item 3. Incorporation of Documents by Reference The Registrant hereby incorporates by reference into this Registration Statement the following: (a) The Registrant’s Annual Report on Form 10-Kfor the fiscal year ended October 31, 2024 (the “ Annual Report”), filed with the Commission, pursuant to the Securities Exchange Act of 1934, as amended (the “ Exchange Act”),