Aspen Technology Announces Date of Fiscal 2007 Third-Quarter Financial Results Release, Conference Call and Webcast

Aspen Technology Announces Date of Fiscal 2007 Second-Quarter Financial Results Release, Conference Call and Webcast

Aspen Technology Announces Selected Financial Results for Second-Quarter Fiscal Year 2007

Aspen Technology Announces Secondary Offering of 18,000,000 Shares of Common Stock by Affiliates of Advent International

Aspen Technology Announces Restatement of Previously Issued Financial Statements

Aspen Technology Announces Financial Results for Third-Quarter Fiscal Year 2007

Leading petrochemical producer implements solutions to improve financial performance of new facilities

Aspen Technology Announces Date of Fiscal 2007 Fourth-Quarter Financial Results Release, Conference Call and Webcast

Aspen Technology Announces Conversion of Series D-2 Preferred Stock to Common Stock

Schlumberger and AspenTech Combine Upstream and Downstream Strength to Provide Integrated Digital Oilfield Solutions