<SEC-DOCUMENT>0001127602-15-028302-index.html : 20151002
<SEC-HEADER>0001127602-15-028302.hdr.sgml : 20151002
<ACCEPTANCE-DATETIME>20151002160405
ACCESSION NUMBER:		0001127602-15-028302
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150930
FILED AS OF DATE:		20151002
DATE AS OF CHANGE:		20151002

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ASPEN TECHNOLOGY INC /DE/
		CENTRAL INDEX KEY:			0000929940
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				042739697
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		200 WHEELER ROAD
		CITY:			BURLINGTON
		STATE:			MA
		ZIP:			01803
		BUSINESS PHONE:		6179491000

	MAIL ADDRESS:	
		STREET 1:		200 WHEELER ROAD
		CITY:			BURLINGTON
		STATE:			MA
		ZIP:			01803

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pietri Antonio J
		CENTRAL INDEX KEY:			0001407695

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34630
		FILM NUMBER:		151140275

	MAIL ADDRESS:	
		STREET 1:		C/O ASPEN TECHNOLOGY, INC.
		STREET 2:		200 WHEELER ROAD
		CITY:			BURLINGTON
		STATE:			MA
		ZIP:			01803
</SEC-HEADER>
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<SEQUENCE>1
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<DESCRIPTION>PRIMARY DOCUMENT
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Document 1 - RAW XML: form4.xml

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