Aspen Technology to Present at Two Investor Conferences in May

Burlington, Mass. - Aspen Technology, Inc. (OTC: AZPN.PK), a leading provider of software and services to the process industries, today announced its participation at two upcoming conferences in May. A live audio webcast of each presentation will be available for a limited time in the Investor Relations section of the company’s website.

Aspen Technology’s President and Chief Executive Officer, Mark Fusco, is presenting at:

• The 37th Annual J.P. Morgan Global Technology, Media & Telecom Conference being held at the Boston Westin Waterfront in Boston on Wednesday, May 20, 2009 at 8:40 a.m. Eastern Time
• The Cowen and Company 20/20 TMT Conference being held at the New York Palace Hotel in New York City on Wednesday, May 27, 2009 at 9:30 a.m. Eastern Time

About AspenTech

AspenTech is a leading supplier of software that optimizes process manufacturing – including oil and gas, petroleum, chemicals, pharmaceuticals 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.