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 *
VON STAATS AARON C
  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)
SVP, General Counsel & Clerk
(Last)
(First)
(Middle)
C/O PARAMETRIC TECHNOLOGY CORP, 140 KENDRICK ST
3. Date of Earliest Transaction (Month/Day/Year)
08/03/2005
(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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Employee Stock Option (right to buy) $ 15 08/03/2005   D     3,000   (2) 08/17/2008 Common Stock 3,000 $ 0.32 (1) 376,333 D  
Employee Stock Option (right to buy) $ 15.69 08/03/2005   D     5,000   (3) 11/19/2008 Common Stock 5,000 $ 0.32 (1) 371,333 D  
Employee Stock Option (right to buy) $ 18.56 08/03/2005   D     4,000   (4) 03/15/2009 Common Stock 4,000 $ 0.32 (1) 367,333 D  
Employee Stock Option (right to buy) $ 12.44 08/03/2005   D     5,000   (5) 05/17/2009 Common Stock 5,000 $ 0.61 (1) 362,333 D  
Employee Stock Option (right to buy) $ 20.31 08/03/2005   D     6,000   (6) 11/15/2009 Common Stock 6,000 $ 0.3 (1) 356,333 D  
Employee Stock Option (right to buy) $ 9.34 08/03/2005   D     5,000   (7) 05/18/2010 Common Stock 5,000 $ 1.4 (1) 351,333 D  
Employee Stock Option (right to buy) $ 15.25 08/03/2005   D     8,000   (8) 01/16/2011 Common Stock 8,000 $ 0.32 (1) 343,333 D  
Employee Stock Option (right to buy) $ 11.68 08/03/2005   D     5,000   (9) 05/15/2011 Common Stock 5,000 $ 1.4 (1) 338,333 D  
Employee Stock Option (right to buy) $ 13.62 08/03/2005   D     28,000   (10) 08/03/2008 Common Stock 28,000 $ 0.61 (1) 310,333 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
VON STAATS AARON C
C/O PARAMETRIC TECHNOLOGY CORP
140 KENDRICK ST
NEEDHAM, MA 02494
      SVP, General Counsel & Clerk  

Signatures

 by Christopher J. MacKrell pursuant to power of attorney filed July 29, 2005   08/05/2005
**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) Exempt transaction pursuant to Rule 16b-3(e). The options were not exercised, but were purchased by the Issuer at the amounts shown pursuant to the exchange offer described herein. On July 6, 2005, the Issuer filed with the SEC a Tender Offer Statement on Schedule TO pursuant to which it offered its eligible employees the opportunity to exchange eligible options to purchase shares of its common stock for a cash payment. The cash payments offered in exchange for eligible options were: for eligible options with exercise prices of $9.00-$11.99, $1.40 per option; for eligible options with exercise prices of $12.00-$14.99, $0.61 per option; for eligible options with exercise prices of $15.00-$19.99, $.032 per option; and, for eligible options with exercise prices of $20.00-$24.99, $0.30 per option. The terms of the exchange offer are more fully described in the offer documents filed by the Issuer on July 6, 2005.
(2) Granted on August 17, 1998 and exercisable as to 750 shares each on August 17, 1999, August 17, 2000, August 17, 2001 and August 17, 2002.
(3) Granted on November 19, 1998 and exercisable as to 1,250 shares each on November 19, 1999, November 19, 2000, November 19, 2001 and November 19, 2002.
(4) Granted on March 15, 1999 and exercisable as to 1,000 shares each on March 15, 2000, March 15, 2001, March 15, 2002 and March 15, 2003.s
(5) Granted on May 17, 1999 and exercisable as to 1,250 shares each on May 17, 2000, May 17, 2001, May 17, 2002 and May 17, 2003.
(6) Granted on November 15, 1999 and exercisable as to 1,500 shares each on November 15, 2000, November 15, 2001, November 15, 2002 and November 15, 2003.
(7) Granted on May 18, 2000 and exercisable as to 2,500 shares each on May 18, 2001 and May 18, 2002.
(8) Granted on January 16, 2001 and exercisable as to 2,000 shares each on January 16, 2002, January 16, 2003, January 16, 2004 and January 16, 2005.
(9) Granted May 15, 2001 and exercisable as to 1,250 shares each on May 15, 2002, May 15, 2003, May 15, 2004 and May 15,2005.
(10) Granted on August 3, 1998 and exercisable as to 7,000 shares each on August 3, 1999, August 3, 2000, August 3, 2001 and August 3, 2002.

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