Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
BEATTIE BRIAN M
  2. Issuer Name and Ticker or Trading Symbol
SYNOPSYS INC [SNPS]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CFO
(Last)
(First)
(Middle)
700 EAST MIDDLEFIELD ROAD
3. Date of Earliest Transaction (Month/Day/Year)
12/13/2010
(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 12/13/2010   M   170,000 A $ 21.15 197,311 D  
Common Stock 12/13/2010   S   170,000 D $ 26.7297 (1) 27,311 D  
Common Stock 12/13/2010   M   25,000 A $ 21.15 52,311 D  
Common Stock 12/13/2010   S   25,000 D $ 26.7364 (2) 27,311 D  
Common Stock 12/13/2010   S(3)   3,799 D $ 26.7401 (4) 23,512 D  
Common Stock 12/13/2010   S(3)   3,313 D $ 26.7388 (5) 20,199 D  
Common Stock 12/13/2010   S(3)   4,353 D $ 26.7373 (6) 15,846 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
Non-Qualified Stock Option (right to buy) $ 21.15 12/13/2010   M(3)     170,000 01/17/2010 01/17/2013 Common Stock 170,000 $ 0 71,000 D  
Non-Qualified Stock Option (right to buy) $ 21.15 12/13/2010   M(3)     25,000 01/17/2010 01/17/2013 Common Stock 25,000 $ 0 46,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
BEATTIE BRIAN M
700 EAST MIDDLEFIELD ROAD
MOUNTAIN VIEW, CA 94043
      CFO  

Signatures

 By: Stephen Buckhout pursuant to POA For: Brian M Beattie   12/14/2010
**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 average price of $26.7297 consists of 1200 at 26.61, 1017 at 26.62, 150 at 26.625, 1267 at 26.63, 100 at 26.635, 567 at 26.64, 167 at 26.65, 400 at 26.66, 61 at 26.665, 2400 at 26.67, 6300 at 26.68, 12989 at 26.69, 30060 at 26.70, 10016 at 26.71, 238 at 26.715, 12934 at 26.72, 200 at 26.725, 11850 at 26.73, 100 at 26.735, 16030 at 26.74, 15455 at 26.75, 12200 at 26.76, 6900 at 26.77, 13700 at 26.78, 8199 at 26.79, 100 at 26.795, 5400 at 26.80
(2) The average price of $26.7364 consists of 100 at 26.60, 100 at 26.61, 133 at 26.62, 200 at 26.63, 104 at 26.64, 100 at 26.65, 100 at 26.66, 500 at 26.67, 200 at 26.68, 2500 at 26.69, 100 at 26.695, 2501 at 26.70, 200 at 26.705, 1400 at 26.71, 337 at 26.7101, 100 at 26.7125, 337 at 26.7101, 100 at 26.7125, 300 at 26.715, 1100 at 26.72, 900 at 26.73, 1600 at 26.74, 2600 at 26.75, 1575 at 26.76, 3350 at 26.77, 200 at 26.775, 2600 at 26.78, 1500 26.79, 600 at 26.80
(3) The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.
(4) The average price of $26.7401 consists of 100 at 26.66, 300 at 26.68, 100 at 26.69, 100 at 26.70, 610 at 26.71, 89 at 26.72, 400 at 26. 73, 100 at 26.74, 300 at 26.75, 550 at 26.76, 450 at 26.77, 300 at 26.78, 400 at 26.79
(5) The average price of 26.7388 consists of 100 at 26.67, 100 at 26.68, 200 at 26.69, 500 at 26.70, 113 at 26.71, 100 at 26.72, 300 at 26.73, 300 at 26.74, 200 at 26.75, 100 at 26.755, 500 at 26.76, 100 at 26.77, 400 at 26.78, 300 at 26.79
(6) The average price of 26.7373 consists of 100 at 26.66, 100 at 26.67, 200 at 26.68, 100 at 26.69, 500 at 26.70, 653 at 26.71, 300 at 26.72, 100 at 26.73, 500 at 26.75, 400 at 26.76. 400 at 26.77, 800 at 26.78, 200 at 26.679

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