<SEC-DOCUMENT>0001104659-15-078773-index.html : 20151113
<SEC-HEADER>0001104659-15-078773.hdr.sgml : 20151113
<ACCEPTANCE-DATETIME>20151113162736
ACCESSION NUMBER:		0001104659-15-078773
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20151113
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20151113
DATE AS OF CHANGE:		20151113

FILER:

	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

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34630
		FILM NUMBER:		151229478

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a15-22943_18k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a15-22943_18k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>a15-22943_1ex99d1.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: a15-22943_1ex99d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g229431mmi001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g229431mmi001.jpg

</DOCUMENT>
</SEC-DOCUMENT>