<SEC-DOCUMENT>0001127602-21-021925-index.html : 20210714
<SEC-HEADER>0001127602-21-021925.hdr.sgml : 20210714
<ACCEPTANCE-DATETIME>20210714162148
ACCESSION NUMBER:		0001127602-21-021925
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210712
FILED AS OF DATE:		20210714
DATE AS OF CHANGE:		20210714

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hammond F G
		CENTRAL INDEX KEY:			0001332920

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34630
		FILM NUMBER:		211090437

	MAIL ADDRESS:	
		STREET 1:		C/O ASPEN TECHNOLOGY, INC.
		STREET 2:		10 CANAL PARK
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02141

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
</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>