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

Proposed transaction combines leading software and consultancy to drive significant value creation for oil & gas industry

Expanded Agenda Offers the Industry’s Most Comprehensive Event Focused on Process Optimization

AspenTech Announces Accelerated Share Repurchase Program

AspenTech Announces CFO Retirement

CB&I Extends Use of aspenONE Process Engineering Solutions to Support Growth

World-Renowned University Professors to Provide Guidance for Development of Next-Generation aspenONE® Software Products

Vice President of Engineering Product Management Will Address Transformation of Process Engineering – Innovations and Best Practices for the Middle East

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

Leading international design and engineering and construction company expands use of AspenTech applications, including Aspen HYSYS® and Aspen Plus®