FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * CHAN CHI-FOON   2. Issuer Name and Ticker or Trading Symbol SYNOPSYS INC [SNPS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Co-CEO & President (Last) (First) (Middle) 690 EAST MIDDLEFIELD ROAD 3. Date of Earliest Transaction (Month/Day/Year) 12/07/2018 (Street) MOUNTAIN VIEW, CA 94043 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 12/07/2018   S(1)   3,611 D $ 88.2774 (2) 198,633 D   Common Stock 12/08/2018   M   7,365 A $ 0 205,998 D   Common Stock 12/08/2018   F   3,652 (3) D $ 87.82 202,346 D   Common Stock 12/08/2018   M   9,673 A $ 0 212,019 D   Common Stock 12/08/2018   F   4,796 (3) D $ 87.82 207,223 D   Common Stock 12/08/2018   M   7,661 A $ 0 214,884 D   Common Stock 12/08/2018   F   3,799 (3) D $ 87.82 211,085 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

$ 0

12/08/2018

D

7,365

12/08/2018

12/08/2018

Common Stock

7,365

$ 0

0

D

Restricted Stock Units

$ 0

12/08/2018

D

9,673

12/08/2018

12/08/2019

Common Stock

9,673

$ 0

9,672

D

Restricted Stock Units

$ 0

12/08/2018

D

7,661

12/08/2018

12/08/2020

Common Stock

7,661

$ 0

15,322

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CHAN CHI-FOON 690 EAST MIDDLEFIELD ROAD MOUNTAIN VIEW, CA 94043	X		Co-CEO & President

Signatures

By: POA pursuant Christina Escalante-Dutra For: Chi-Foon Chan		12/11/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.
(2)	Represents a weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from $87.21 to 89.88. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range.
(3)	These shares were retained by the Company in order to meet the tax withholding obligations of the award holder in connection with the vesting of an installment of the performance restricted stock unit award. The Compensation Committee approved the disposition of shares by the award holder and the amount retained by the Company was not in excess of the amount of the tax liability.

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