Aspen Technology Announces Webcast of Annual Shareholder Meeting; Live Webcast Will be Held At 3:00 p.m. EDT On Tuesday, December 10, 2002

December 5, 2002

CAMBRIDGE, Mass.--(BUSINESS WIRE)--Dec. 5, 2002--Aspen Technology, Inc. (Nasdaq:AZPN) today announced it will Webcast its upcoming Annual Shareholder Meeting. The virtual presentation will be available to investors beginning at 3:00 p.m. EDT on Tuesday, December 10, 2002. The Webcast will be open to interested parties by accessing the Investor Relations section of the company's website at http://www.aspentech.com and clicking on the Webcast link.

    What:     Aspen Technology's Annual Shareholder Meeting

    When:     Tuesday, December 10, 2002, 3:00 p.m. EDT

    Where:    http://www.aspentech.com

    How:      Live over the Internet - Access the call through the
              AspenTech homepage

    Contact:  Joshua Young, Director of Investor Relations, Aspen
              Technology, Inc.

If you are unable to participate during the live Webcast, the call will be archived on http://www.aspentech.com for ten days. To access the replay, click on Investor Relations and then access the conference call link.

About AspenTech

Aspen Technology, Inc. is a leading supplier of enterprise software to the process industries, enabling its customers to increase their margins and optimize their business performance. AspenTech's engineering solutions, including Hyprotech's technologies, help companies design and improve their plants and processes, maximizing returns throughout their operational life. AspenTech's manufacturing/supply chain solutions allow companies to run their plants and supply chains more profitably, from customer demand through to the delivery of the finished products. Over 1,200 leading companies rely on AspenTech's software every day to drive improvements across their most important engineering and operational processes. AspenTech's customers include: Air Liquide, Aventis, Bayer, BASF, BP, ChevronTexaco, Dow Chemical, DuPont, ExxonMobil, GlaxoSmithKline, Lyondell Equistar, Merck, Mitsubishi Chemical, Shell, Southern Company, TXU Energy and Unilever. For more information, visit www.aspentech.com.

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CONTACT: Aspen Technology, Inc.
Joshua Young, 617/949-1274
joshua.young@aspentech.com