<SEC-DOCUMENT>0001127602-17-005472-index.html : 20170213
<SEC-HEADER>0001127602-17-005472.hdr.sgml : 20170213
<ACCEPTANCE-DATETIME>20170213164912
ACCESSION NUMBER:		0001127602-17-005472
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170210
FILED AS OF DATE:		20170213
DATE AS OF CHANGE:		20170213

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:		20 CROSBY DRIVE
		CITY:			BEDFORD
		STATE:			MA
		ZIP:			01730
		BUSINESS PHONE:		781-221-4302

	MAIL ADDRESS:	
		STREET 1:		20 CROSBY DRIVE
		CITY:			BEDFORD
		STATE:			MA
		ZIP:			01730

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CASEY DONALD P
		CENTRAL INDEX KEY:			0001193372

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34630
		FILM NUMBER:		17600043

	MAIL ADDRESS:	
		STREET 1:		1310 RIDDER PARK DR
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131-2313
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
Document 1 - file: form4.html

Document 1 - RAW XML: form4.xml

</DOCUMENT>
</SEC-DOCUMENT>