Aspen Technology to Present at Upcoming Cowen and UBS Investor Conferences

Leading Indian Engineering and Construction Company Increases Investment in aspenONE Application Suite to Support International Growth

Aspen Technology to Present at Upcoming Conferences in May

AspenTech Announces Changes to Board of Directors

Latest Software Release Drives Superior Asset Performance

Aspen Technology to Present at the Nasdaq 33rd Investor Conference

Antonio Pietri, Executive VP of Worldwide Field Operations, to become CEO on October 1, 2013

Aspen Technology to Present at the KeyBanc Capital Markets 14th Annual Emerging Technology Summit

Delivers New Aspen HYSYS®, Solids Modeling Within Aspen Plus®,New Aspen PIMS™ Platinum and Aspen Collaborative Demand Manager™, and Breakthrough Innovations in Advanced Process Control, Energy and Economic Analysis

Aspen Technology Announces Date of Selected Preliminary Fiscal 2009 First-Quarter Financial Results Release, Conference Call and Webcast