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May 4, 2011

PTC to Speak at the Jefferies Global Technology, Internet, Media & Telecom Conference on Wednesday, May 11th, 2011

Jefferies 2011 Global Technology, Internet, Media & Telecom Conference

NEEDHAM, Mass:PTC (Nasdaq: PMTC), The Product Development Company®, today announced that management will speak at the Jefferies Global Technology, Internet, Media & Telecom Conference in New York City on Wednesday, May 11th at 4:30pm (ET).

When: Wednesday, May 11th at 4:30pm (ET)

Webcast: www.ptc.com/for/investors.htm

Replay: The audio replay of this event will be archived for public replay until 4:00 pm (CT) on

May 16, 2011. To access the replay via webcast, please visit www.ptc.com/for/investors.htm.