Business Wire

Aspen Technology, Inc. (OTC: AZPN.PK), a leading provider of software and services to the process industries, today announced that it will release selected preliminary results for the first quarter of fiscal 2010, along with its financial results for fiscal 2009, on Monday, November 9, 2009. The company also expects to file its Annual Report on Form 10-K for fiscal 2009, in addition to its Quarterly Reports on Form 10-Q for the first, second and third quarters of fiscal 2009, with the Securities and Exchange Commission (SEC) that morning before the market opens on November 9, 2009.

In conjunction with these announcements, AspenTech will host a conference call and webcast on November 9, 2009, at 8:30 a.m. (Eastern Time) to discuss the company's selected preliminary financial results for the first quarter of fiscal 2010, as well as annual and quarterly financial results for fiscal 2009. The live dial-in number is (877) 245-0126, conference ID code 39756294. 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 39756294 through November 16, 2009.

About AspenTech

AspenTech is a leading supplier of software that optimizes process manufacturing – for energy, chemicals, pharmaceuticals, engineering and construction, and other industries that manufacture and produce products from a chemical process. 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.

© 2009 Aspen Technology, Inc. AspenTech, aspenONE, the Aspen leaf logo and the 7 Best Practices of Engineering Excellence are trademarks of Aspen Technology, Inc. All rights reserved. All other trademarks are property of their respective owners.

Aspen Technology may provide information regarding the new subscription-based commercial model or possible future product developments including new products, product features, product interfaces, integration, design, architecture, etc. that may be represented as “product roadmaps.” Any such information is for discussion purposes only and does not constitute a commitment by Aspen Technology to do or deliver anything in these product roadmaps or otherwise.