<SEC-DOCUMENT>0001104659-16-090438-index.html : 20160119
<SEC-HEADER>0001104659-16-090438.hdr.sgml : 20160118
<ACCEPTANCE-DATETIME>20160119170638
ACCESSION NUMBER:		0001104659-16-090438
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20160112
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20160119
DATE AS OF CHANGE:		20160119

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:		161348944

	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>a16-2033_18k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a16-2033_18k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-2.1
<SEQUENCE>2
<FILENAME>a16-2033_1ex2d1.htm
<DESCRIPTION>EX-2.1
<TEXT>
Document 2 - file: a16-2033_1ex2d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>3
<FILENAME>a16-2033_1ex10d1.htm
<DESCRIPTION>EX-10.1
<TEXT>
Document 3 - file: a16-2033_1ex10d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>4
<FILENAME>a16-2033_1ex99d1.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 4 - file: a16-2033_1ex99d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g20331mmi001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g20331mmi001.gif

</DOCUMENT>
</SEC-DOCUMENT>