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 * DIBONA ANTHONY   2. Issuer Name and Ticker or Trading Symbol PARAMETRIC TECHNOLOGY CORP [PMTC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP Global Maintenance Support (Last) (First) (Middle) 140 KENDRICK STREET 3. Date of Earliest Transaction (Month/Day/Year) 11/15/2012 (Street) NEEDHAM, MA 02494 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 11/15/2012   M   74,192 A $ 0 (1) 122,943 D   Common Stock 11/15/2012   F   26,532 (2) D $ 19.22 96,411 D   Common Stock 11/16/2012   S   6,195 D $ 18.9911 (3) 90,216 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	(1)	11/15/2012		M			11,773	(4)	(4)	Common Stock	11,773	$ 0	0 (11)	D
Restricted Stock Units	(1)	11/15/2012		M			8,171	(5)	(5)	Common Stock	8,171	$ 0	8,171 (11)	D
Restricted Stock Units	(1)	11/15/2012		M			9,031	(6)	(6)	Common Stock	9,031	$ 0	18,060 (11)	D
Restricted Stock Units	(1)	11/15/2012		M			11,773	(7)	(7)	Common Stock	11,773	$ 0	0 (11)	D
Restricted Stock Units	(1)	11/15/2012		M			16,447	(8)	(8)	Common Stock	16,447	$ 0	0 (11)	D
Restricted Stock Units	(1)	11/15/2012		M			8,171	(9)	(9)	Common Stock	8,171	$ 0	8,171 (11)	D
Restricted Stock Units	(1)	11/15/2012		M			8,826	(10)	(10)	Common Stock	8,826	$ 0	17,650 (11)	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
DIBONA ANTHONY 140 KENDRICK STREET NEEDHAM, MA 02494			EVP Global Maintenance Support

Signatures

Catherine Gorecki by power of attorney filed 11/2/2007		11/19/2012
**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)	Each restricted stock unit represents a contingent right to one share of Parametric Technology Corporation common stock.
(2)	Tendered to Issuer to satisfy tax withholding obligations of Reporting Person incurred in connection with the vesting of 74,192 shares of the Reporting Person's restricted stock unit awards on November 15, 2012.
(3)	This transaction was executed in multiple trades at prices ranging from $18.91 to $19.08. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
(4)	Time-based restricted stock units that vested as to 11,774 RSUs on November 15, 2010 and 11,773 RSUs on November 15, 2011 and November 15, 2012.
(5)	Time-based restricted stock units that vested as to 8,172 RSUs on November 15, 2011 and 8,171 RSUs on November 15, 2012 and will vest as to 8,171 RSUs on November 15, 2013.
(6)	Time-based restricted stock units that vested as to 9,031 RSUs on November 15, 2012 and will vest as to 9,030 RSUs on November 15, 2013 and November 15, 2014.
(7)	Performance-based restricted stock units subject to subsequent time-based restrictions that vested as to 11,774 RSUs on November 15, 2010, 11,773 RSUs on November 15, 2011 and November 15, 2012.
(8)	Performance-based restricted stock units that vested as to 16,477 RSUs on November 15, 2012.
(9)	Performance-based restricted stock units subject to subsequent time-based restrictions that vested as to 8,172 RSUs on November 15, 2011 and 8,171 RSUs on November 15, 2012 and will vest as to 8,171 RSUs on November 15, 2013.
(10)	Performance-based restricted stock units subject to subsequent time-based restrictions that vested as to 8,826 RSUs on November 15, 2012 and will vest as to 8,825 RSUs on November 15, 2013 and November 15, 2014.
(11)	This amount represents the total number of derivative securities beneficially owned of the class shown.

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