Latest Software Release Drives Superior Asset Performance

Aspen Technology to Webcast Investor Day

Aspen Technology Updates Status of Outstanding Filing Requirements

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 Upcoming Investor Conferences

aspenONE V7 for Process Engineering Addresses Key Issues Facing Traditional and Alternative Energy Companies

Aspen Technology to Present at the William Blair Growth Stock Conference

Aspen Technology to Webcast Investor Day

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