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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      
1. Name and Address of Reporting Person * MAHONEY RICHARD S. 2. Issuer Name and Ticker or Trading Symbol ANSYS INC [ ANSS ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
VP, WORLDWIDE SALES & SUPPORT
(Last)         (First)         (Middle)
2600 ANSYS DR.
3. Date of Earliest Transaction (MM/DD/YYYY)
3/3/2020
(Street)
CANONSBURG, PA 15317
(City)       (State)       (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)
 
6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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  3/3/2020    F    2926 (1) D $249.07  43663  D   
Common Stock  3/3/2020    A    6283 (2) A $0  49946  D   
Common Stock  3/4/2020    S    1023 (3) D $252.90 (4) 48923  D   
Common Stock  3/4/2020    S    422 (3) D $254.14 (5) 48501  D   
Common Stock  3/4/2020    S    200 (3) D $255.00  48301  D   
Common Stock  3/4/2020    S    200 (3) D $256.65 (6) 48101 (7) D   

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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

Explanation of Responses:
(1)  Shares withheld for payment of taxes in connection with the vesting of time-based Restricted Stock Units.
(2)  Represents Restricted Stock Units issued under the Fifth Amended and Restated ANSYS, Inc. 1996 Stock Option and Grant Plan. The grant of Restricted Stock Units shall vest 33% annually in equal installments beginning on the first anniversary of the grant date. Each Restricted Stock Unit is settled solely for one share of Common Stock.
(3)  Pursuant to an effective Rule 10b5-1 plan.
(4)  The trade was executed in a series of transactions with a price range of $252.16 to $253.15, inclusive, with a weighted average price of $252.90. The reporting person undertakes to provide to ANSYS, Inc., any security holder of ANSYS, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(5)  The trade was executed in a series of transactions with a price range of $253.87 to $254.69, inclusive, with a weighted average price of $254.14. The reporting person undertakes to provide to ANSYS, Inc., any security holder of ANSYS, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(6)  The trade was executed in a series of transactions with a price range of $256.31 to $256.99, inclusive, with a weighted average price of $256.65. The reporting person undertakes to provide to ANSYS, Inc., any security holder of ANSYS, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(7)  Includes 38,079 Restricted Stock Units.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
MAHONEY RICHARD S.
2600 ANSYS DR.
CANONSBURG, PA 15317


VP, WORLDWIDE SALES & SUPPORT

Signatures
Janet Lee, Attorney-in-Fact 3/5/2020
**Signature of Reporting Person Date
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