Strong top line performance drives highest operating profit and margin since Fiscal 1998

Aspen Technology Announces Selected Financial Results for Fourth-Quarter Fiscal Year 2006, Stock Option Grant Review and Restatement

Aspen Technology Announces Restatement of Fiscal 2006 Results

Aspen Technology Announces Financial Results for Fourth-Quarter Fiscal Year 2006 and Completion of Stock Option Review and Restatement

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

Aspen Technology Announces Date of Third-Quarter 2006 Financial Results Release, Conference Call and Webcast

Strong license revenue growth drives significant upside on profitability

Aspen Technology Announces Date of Second-Quarter 2006 Financial Results Release, Conference Call and Webcast

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

Eliminates approximately $15 million in future annual preferred stock discount and dividends