Aspen Technology to Present at Bear Stearns Technology Conference

June 8, 2005

CAMBRIDGE, Mass., Jun 08, 2005 (BUSINESS WIRE) -- Aspen Technology, Inc. (NASDAQ: AZPN), a leading provider of software and services to the process industries, today announced the company will present to investors at the Bear Stearns Technology Conference in New York City on Wednesday, June 8, 2005 at 2:15 p.m. ET. Mark Fusco, President & CEO of AspenTech, and Charles Kane, Senior Vice President & Chief Financial Officer, will present an overview of the company's business, financials, and long-term growth and product strategy.

About AspenTech

Aspen Technology, Inc. provides industry-leading software and professional services that help process companies improve efficiency and profitability by enabling them to model, manage and control their operations. The new generation of integrated aspenONE(TM) solutions are aligned with the key industry business processes, providing manufacturers the capabilities they need to optimize operational performance, make real-time decisions and synchronize the plant and supply chain. Over 1,500 leading companies already rely on AspenTech's software, including Aventis, Bayer, BASF, BP, ChevronTexaco, DuPont, ExxonMobil, Fluor, GlaxoSmithKline, Shell, and Total. For more information, visit www.aspentech.com.

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