AspenTech Receives Additional Staff Determination Letter from Nasdaq Relating to Quarterly Report on Form 10-Q

AspenTech Announces New Corporate Headquarters

aspenONE Delivers Major Performance Improvements at PetroChina Polyethylene Plant

Receives SSPA’s STAR Award for Excellence in Self-Service Capabilities

Aspen Technology to Present at the 9th Annual Needham Growth Conference

Aspen Technology Receives Staff Determination from Nasdaq

Aspen Technology Comments on Civil Complaint Filed by the Securities and Exchange Commission Against Three Former Officers and the Criminal Complaint Filed by the U.S. Attorney Against One of them, David L. McQuillin

Aspen Technology Receives Staff Determination from Nasdaq

Aspen Technology Files Extension for Second Quarter Form 10-Q

Aspen Technology Completes Restatement and Files Amended Annual Report on Form 10-K Reports Record Results for Fiscal Second Quarter 2007