PTC INC. — Director's Dealing 2011

May 19, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PARAMETRIC TECHNOLOGY CORP (PMTC)
CIK: 0000857005
Period of Report: 2011-05-17

Reporting Person: ZAMBONINI RENATO (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-17	Common Stock	A	6818	—	Acquired	6818	Direct
2011-05-17	Common Stock	A	12908	—	Acquired	19726	Direct

Footnotes

F1: Restricted stock award subject to a time-based restriction that vests on the earlier of Parametric Technology Corporation's 2012 Annual Meeting of Shareholders or March 15, 2012.

F2: Restricted stock award subject to a time-based restriction that vests in two equal installments of 6,454 on each of May 17, 2013 and May 17, 2014.