Aspen Technology to Present at the William Blair 34th Annual Growth Stock Conference

Aspen Technology to Present at the Nasdaq 33rd Investor Conference

Aspen Technology to Present at the JP Morgan Global Technology Media and Communications Conference

Aspen Technology to Present at the Deutsche Bank 2011 Technology Conference

Aspen Technology to Present at the Deutsche Bank 2011 Small & Mid Cap Conference

Aspen Technology to Present at the Canaccord Growth Conference

Aspen Technology to Present at the Canaccord Genuity Growth Conference

Aspen Technology to Present at Upcoming Cowen and UBS Investor Conferences

Aspen Technology to Present at Upcoming Conferences in May

Aspen Technology to Present at UBS Global Technology and Services Conference