The Q3 guidance assumes a non-GAAP tax rate of 25% and a GAAP tax rate of 8%. The Q3 non-GAAP guidance excludes approximately $12 million of stock-based compensation expense, $9 million of acquisition-related intangible asset amortization expense, $3 million of restructuring related expense and the related income tax effects.

The FY’09 guidance assumes a non-GAAP tax rate of 25% and a GAAP tax rate of -21%. The FY’09 non-GAAP guidance excludes approximately $43 million of stock-based compensation expense, $35 million of acquisition-related intangible asset amortization expense, $13 million of restructuring related expense and the related income tax effects.

Q2 Earnings Conference Call and Webcast

Supplemental financial and operating metric information and prepared remarks for the conference call will be posted to the investor relations section of our website simultaneously with this press release. The prepared remarks will not be read live; the call will be primarily Q&A.

When:		Wednesday, April 29, 2009 at 8:30 a.m. Eastern Time
Dial-in:		1-888-566-8560 or 1-517-623-4768
		Call Leader: Richard Harrison with Passcode: PTC
Webcast:		http://www.ptc.com/for/investors.htm
Replay:		The audio replay of this event will be archived for public replay until 4:00 p.m. on May 4, 2009 at 1-888-568-0858 or 1-402-998-0243. To access the replay via webcast, please visit http://www.ptc.com/for/investors.htm.

Important Information About Non-GAAP References

PTC provides non-GAAP supplemental information to its financial results. Non-GAAP operating expenses, margin and EPS exclude stock-based compensation expense, amortization of acquired intangible assets, acquired in-process research and development expense, restructuring charges, and the related tax effects of the preceding items and any one-time tax items, such as valuation allowance reversals. PTC provides this non-GAAP information to facilitate period-to-period comparisons of its operational performance by adjusting for certain non-cash and certain episodic expenses. We believe that providing non-GAAP measures affords investors a view of our operating results that may be more easily compared to peer companies. PTC management also uses this and other non-GAAP financial information to evaluate, manage and plan our business because the information provides additional insight into ongoing financial performance. In addition, compensation of our executives is based in part on the performance of our business based on these non-GAAP measures. However, non-GAAP information should not be construed as an alternative to GAAP information as the items excluded from the non-GAAP measures often have a material impact on PTC’s financial results. Management uses, and investors should use, non-GAAP measures in conjunction with our GAAP results.