Aspen Technology Announces Financial Results for the Fourth Quarter and Fiscal Year 2010

Board of Directors Approve $40 Million Share Repurchase Program

Aspen Technology Announces Pricing of Secondary Public Offering

Aspen Technology Announces Financial Results for the Third Quarter Fiscal Year 2010

Aspen Technology to Present at 12th Annual Needham Growth Conference

Aspen Technology to Present at the 38th Annual J.P. Morgan Global Technology, Media & Telecom Conference

Aspen Technology to Present at the William Blair Emerging Growth Stock Conference

DuPont to Discuss How Integrated Basic Engineering Improves the Efficiency and Quality of Capital Projects

Aspen Technology Announces Date of Fourth-Quarter Fiscal 2010 Financial Results Release, Conference Call and Webcast

Aspen Technology Announces Date of Third-Quarter Fiscal 2010 Financial Results Release, Conference Call and Webcast