Release Details

BURLINGTON, Mass.--(BUSINESS WIRE)--Oct. 24, 2008--Aspen Technology, Inc. (OTC: AZPN.PK), a leading provider of software and services to the process industries, today announced that the company will release selected preliminary financial results for its first quarter fiscal 2009, ended September 30, 2008, before the U.S. financial markets open on Thursday, October 30, 2008.

In conjunction with this announcement, AspenTech will host a conference call and webcast on October 30, 2008, at 8:00 am (Eastern Time) to discuss the Company's selected preliminary financial results, business outlook, and related corporate and financial matters.

The live dial-in number is (877) 239-3024, conference ID code 68673560. Interested parties may also listen to a live webcast of the call by logging on to the Investor Relations section of AspenTech's website, http://www.aspentech.com/corporate/investor.cfm, and clicking on the "webcast" link. A replay of the call will be archived on AspenTech's website and will also be available via telephone at (800) 642-1687 or (706) 645-9291, conference ID code 68673560 through November 6, 2008.

About AspenTech

AspenTech is a leading global supplier of software that optimizes process manufacturing. With integrated aspenONE solutions, process manufacturers can implement best practices for optimizing their engineering, manufacturing and supply chain operations. As a result, AspenTech customers are better able to increase capacity, improve margins, reduce costs and become more energy efficient. To see how the world's leading process manufacturers rely on AspenTech to achieve their operational excellence goals, visit www.aspentech.com.

(C) 2008 Aspen Technology, Inc. AspenTech, aspenONE and the Aspen leaf logo are trademarks of Aspen Technology, Inc. All rights reserved. All other trademarks are property of their respective owners.

Forward Looking Statements

This press release may contain forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Actual results may vary significantly from AspenTech's expectations based on a number of risks and uncertainties, including, without limitation: AspenTech's plan to improve operational performance may not be implemented effectively; AspenTech has identified material weaknesses in its internal controls with respect to software license revenue recognition and other matters, that, if not remedied effectively, could result in material misstatements; AspenTech may incur substantial damages and expenses as the result of pending and future securities litigation and government investigations, including securities litigation based on the restatements of the company's financial statements as well as any future action associated with a determination that the company has failed to comply with its existing consent decree with the Federal Trade Commission; AspenTech's lengthy sales cycle makes it difficult to predict quarterly operating results; fluctuations in AspenTech's quarterly operating results; AspenTech's dependence on customers in the cyclical chemicals, petrochemicals and petroleum industries; the possibility of new accounting standards or the interpretation of existing accounting standards affecting our financial results; AspenTech's ability to raise additional capital as required; intense competition; AspenTech's need to develop and market products successfully; reliance on relationships with strategic partners; challenges associated with international operations; risks associated with AspenTech's delisting from The Nasdaq Stock Exchange and the trading of AspenTech's common stock over the counter; and other risk factors described from time to time in AspenTech's periodic reports filed with the Securities and Exchange Commission.

AspenTech cannot guarantee any future results, levels of activity, performance, or achievements. AspenTech expressly disclaims any current intention to update forward-looking statements after the date of this press release.

    CONTACT: Media:
             AspenTech
             David Grip, 781-221-5273
             david.grip@aspentech.com
             or
             Investor:
             ICR
             Kori Doherty, 617-956-6730
             kdoherty@icrinc.com

    SOURCE: Aspen Technology, Inc.