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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
857005	Parametric Technology Corp	PMTC	Services-Prepackaged Software (7372)	042866152

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1186556	Richard C Harrison	140 Kendrick Street Needham MA 02494	Executive Chairman	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2010-10-29	312,046	$21.41	985,058	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct

Reported Derivative Holdings

Sec. Name	Sec. Type	Price	Date	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Employee Stock Option (right to buy)	$12.58		2011-09-20	7,954	7,954	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2011-09-20	7,954	7,954	Direct

Footnotes

This amendment to Form 4 is being filed to note that the shares sold were sold pursuant to a pre-established Rule 10b5-1(c ) trading plan.
This information is unchanged and is repeated as the information is required to file the form. Employee stock option granted September 20, 2001, exercisable as to 80,000 shares on September 20, 2002, 79,999 shares on September 20, 2003, 79,999 shares on September 20, 2004 and 80,000 shares on September 20, 2005.
This amendment to Form 4 is being filed to report the correct total number of derivative securities beneficially owned of the class shown.