<SEC-DOCUMENT>0001193125-19-040963-index.html : 20190214
<SEC-HEADER>0001193125-19-040963.hdr.sgml : 20190214
<ACCEPTANCE-DATETIME>20190214163132
ACCESSION NUMBER:		0001193125-19-040963
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20190214
DATE AS OF CHANGE:		20190214

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PEGASYSTEMS INC
		CENTRAL INDEX KEY:			0001013857
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
		IRS NUMBER:				042787865
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-49173
		FILM NUMBER:		19607107

	BUSINESS ADDRESS:	
		STREET 1:		ONE ROGERS STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142-1209
		BUSINESS PHONE:		6173749600

	MAIL ADDRESS:	
		STREET 1:		ONE ROGERS STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142-1209

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TREFLER ALAN
		CENTRAL INDEX KEY:			0001032235

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	MAIL ADDRESS:	
		STREET 1:		C/O PEGASYSTEMS INC
		STREET 2:		101 MAIN STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d671869dsc13ga.htm
<DESCRIPTION>SC 13G AMENDMENT NO. 18
<TEXT>
Document 1 - file: d671869dsc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>