Aspen Technology Announces Conference Call and Webcast

October 4, 2002
CAMBRIDGE, Mass., Oct 4, 2002 /PRNewswire-FirstCall via COMTEX/ -- Aspen Technology, Inc. (Nasdaq: AZPN) today announced it will hold a conference call and webcast on Monday, October 7, 2002 at 8:30 a.m. Eastern Time to discuss preliminary financial results for its fiscal 2003 first quarter ending September 30, 2002. A news release detailing the results will be issued Monday morning at 7:00 a.m. Eastern Time. The webcast will be open to interested parties by accessing the Investor Relations section of the company's website at http://www.aspentech.com. A replay of the call will be archived on AspenTech's website for ten days and will also be available for two days via telephone, beginning at 12:30 p.m. EST on October 7, 2002, by dialing 719-457-0820 and entering in confirmation code 414398.

    (Photo:  http://www.newscom.com/cgi-bin/prnh/20000811/ASPENLOGO )

     What:          Aspen Technology Earnings Conference Call and Webcast
     When:          Monday, October 7, 2002, 8:30 a.m. Eastern Time
     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.
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, incorporating 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, to production in the plant, to the delivery of 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, AstraZeneca, Bayer, BASF, BP, ChevronTexaco, Dow Chemical, DuPont, ExxonMobil, GlaxoSmithKline, Lyondell Equistar, Merck, Mitsubishi Chemical, Shell and Unilever. For more information, visit www.aspentech.com.

Contact:
Joshua Young
Aspen Technology, Inc.
(617) 949-1274
joshua.young@aspentech.com

SOURCE Aspen Technology, Inc.

CONTACT:
Joshua Young of Aspen Technology, Inc., +1-617-949-1274,
joshua.young@aspentech.com
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URL: http://www.aspentech.com

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