Release Details

CAMBRIDGE, Mass., Aug 01, 2005 (BUSINESS WIRE) -- Aspen Technology, Inc. (Nasdaq:AZPN) today announced that the company will disclose financial results for its fiscal 2005 fourth quarter and full fiscal year on Tuesday, August 30, 2005, after the close of the Nasdaq stock market. The company will hold a conference call and webcast with investors that evening to discuss its financial results, business outlook, and related corporate and financial matters beginning at 4:45 p.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 and clicking on the webcast hyperlink.

What: AspenTech's Fourth Quarter & Fiscal 2005 Earnings Release and Webcast

When: Tuesday, August 30, 2005, 4:45 p.m. ET

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.

If you are unable to listen to the live webcast, the call will be archived on the Investor Relations section of AspenTech's website at the conclusion of the call.

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 Sanofi-Aventis, Bayer, BASF, BP, ChevronTexaco, DuPont, ExxonMobil, Fluor, GlaxoSmithKline, Shell, and Total. For more information, visit www.aspentech.com.

SOURCE: Aspen Technology, Inc.

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