<SUBMISSION>
<ACCESSION-NUMBER>0001299933-05-002774
<TYPE>8-K/A
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20050602
<ITEMS>1.01
<ITEMS>9.01
<FILING-DATE>20050608
<DATE-OF-FILING-DATE-CHANGE>20050608
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>PEGASYSTEMS INC
<CIK>0001013857
<ASSIGNED-SIC>7374
<IRS-NUMBER>042787865
<STATE-OF-INCORPORATION>MA
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K/A
<ACT>34
<FILE-NUMBER>001-11859
<FILM-NUMBER>05884805
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>101 MAIN ST
<CITY>CAMBRIDGE
<STATE>MA
<ZIP>02142-1590
<PHONE>6173749600
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>101 MAIN ST
<CITY>CAMBRIDGE
<STATE>MA
<ZIP>02142-1590
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>8-K/A
<SEQUENCE>1
<FILENAME>htm_5174.htm
<DESCRIPTION>LIVE FILING
<TEXT>
<!-- CoverPageHeader start -->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE> Pegasystems Inc.  (Form: 8-K/A) </TITLE>
</HEAD>
<BODY TEXT="#000000" BGCOLOR="#FFFFFF" ALINK="#0000FF" HLINK="#FF0000" VLINK="#800080">
<A NAME="DOCUMENT_TOP">&nbsp;</A>
<P>
<!-- CoverPageHeader end --><!-- CoverPageTitle START -->
<A NAME="DOCUMENT_TOP">&nbsp;</A>
<HR NOSHADE>
<P>
<P ALIGN="CENTER">
<FONT SIZE="4">
		UNITED STATES<BR>
	SECURITIES AND EXCHANGE COMMISSION
</FONT>
<BR>
<FONT SIZE="2">
	WASHINGTON, D.C. 20549
</FONT>
<P ALIGN="CENTER">
<FONT SIZE="5">
	FORM 8-K/A
</FONT>
<FONT SIZE="2">
	<br>(Amendment No. 1)
</FONT>
</P>
<P ALIGN="CENTER">
<FONT SIZE="3">
	CURRENT REPORT
</FONT>
</P>
<P ALIGN="CENTER">
<FONT SIZE="2">
	Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934
</FONT>
</P>
<CENTER>
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
<TR VALIGN="BOTTOM">
<TD WIDTH="51%">
	&nbsp;
</TD>
<TD WIDTH="5%">
	&nbsp;
</TD>
<TD WIDTH="44%">
	&nbsp;
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	Date of Report (Date of Earliest Event Reported):
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	June 2, 2005
</FONT>
</TD>
</TR>
</TABLE>
<BR>
</CENTER>
<!-- CoverPageTitle END --><!-- CoverPageRegistrant START -->
<P ALIGN="CENTER"><!-- -->
<FONT SIZE="6">
	Pegasystems Inc.
</FONT>
<FONT SIZE="2">
<BR>__________________________________________<BR>
	(Exact name of registrant as specified in its charter)
</FONT>
<CENTER>
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
<TR VALIGN="BOTTOM">
<TD WIDTH="33%">
	&nbsp;
</TD>
<TD WIDTH="34%">
	&nbsp;
</TD>
<TD WIDTH="33%">
	&nbsp;
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	Massachusetts
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	1-11859
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	04-2787865
</FONT>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
_____________________<BR>
	(State or other jurisdiction
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
_____________<BR>
	(Commission
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
______________<BR>
	(I.R.S. Employer
</FONT>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	of incorporation)
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	File Number)
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	Identification No.)
</FONT>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;&nbsp;
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	101 Main Street, Cambridge, Massachusetts
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	02142
</FONT>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
_________________________________<BR>
	(Address of principal executive offices)
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
___________<BR>
	(Zip Code)
</FONT>
</TD>
</TR>
</TABLE>
</CENTER>
<CENTER>
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">

<TR VALIGN="BOTTOM">
<TD WIDTH="51%">
	&nbsp;
</TD>
<TD WIDTH="5%">
	&nbsp;
</TD>
<TD WIDTH="44%">
	&nbsp;
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	Registrant&#146;s telephone number, including area code:
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="CENTER" VALIGN="TOP">
<FONT SIZE="2">
	617-374-9600
</FONT>
</TD>
</TR>
</TABLE>
</CENTER>
<P ALIGN="CENTER">
<FONT SIZE="2">
	Not Applicable
<BR>______________________________________________<BR>
	Former name or former address, if changed since last report
</FONT>
<P ALIGN="CENTER">
<FONT SIZE="2">
	&nbsp;
</FONT>
<!-- CoverPageRegistrant END --><P><FONT SIZE="2">
Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any
of the following provisions:</FONT>
</P>
<P><FONT SIZE="2">
[&nbsp;&nbsp;]&nbsp;&nbsp;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<br>
[&nbsp;&nbsp;]&nbsp;&nbsp;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<br>
[&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<br>
[&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<br>
</P></FONT><!-- PageBreak START -->
<P>
<HR NOSHADE>
<DIV ALIGN="LEFT" STYLE="PAGE-BREAK-BEFORE:ALWAYS">
<A HREF="#DOCUMENT_TOP">
<U>
<B>
<FONT SIZE="2">Top of the Form</FONT>
</B>
</U>
</A>
</DIV>
<!-- PageBreak END --><!-- Item START -->
<P ALIGN="LEFT">
<FONT SIZE="2">
<B>
	Item 1.01. Entry into a Material Definitive Agreement.
</B>
</FONT>
</P>
<P ALIGN="LEFT">
<FONT SIZE="2">
On April 11, 2005, Pegasystems Inc. (the "Company") filed a Current Report on Form 8-K to report, among other things, that it had entered into amendments to certain existing stock option agreements between the Company and each of the following directors: Alexander V. d&#x2019;Arbeloff, Steven F. Kaplan, William H. Keough, Edward A. Maybury, James P. O&#x2019;Halloran, Edward B. Roberts and William W. Wyman (each, a "Non-Employee Director").  The amendments provided that, if a Non-Employee Director has been a member of the Company&#x2019;s Board of Directors for five years or more as of the date that such Non-Employee Director ceases to be a Board member, such Non-Employee Director may exercise the applicable stock option at any time before the scheduled expiration date of the option agreement (which is typically ten years from the date of grant).  <br><br>At a meeting held on June 2, 2005, the Company&#x2019;s Board of Directors determined that these amendments would apply to the existing stock option agreements between the Company and Richard H. Jones, even though Mr. Jones is employed by the Company.  Such amendments apply to all stock options held by Mr. Jones with an exercise price equal to or greater than the fair market value of the Company&#x2019;s common stock on June 2, 2005.  These amendments do not apply to any stock options held by Mr. Jones with an exercise price less than the fair market value of the Company&#x2019;s common stock on June 2, 2005.        <br>
</FONT>
</P>
<!-- Item END -->
<BR><BR><BR><BR><!-- Item START -->
<P ALIGN="LEFT">
<FONT SIZE="2">
<B>
	Item 9.01. Financial Statements and Exhibits.
</B>
</FONT>
</P>
<P ALIGN="LEFT">
<FONT SIZE="2">
(c) Exhibits<br><br>99.1*   Form of Director Indemnification Agreement dated April 6, 2005<br><br>*Previously filed as an exhibit to the Regsitrant's Form 8-K (File No. 001-11859) filed on April 11, 2005.
</FONT>
</P>
<!-- Item END -->
<BR><BR><BR><BR><P ALIGN="LEFT" STYLE="FONT-SIZE: 10PT"></P><!-- PageBreak START -->
<P>
<HR NOSHADE>
<DIV ALIGN="LEFT" STYLE="PAGE-BREAK-BEFORE:ALWAYS">
<A HREF="#DOCUMENT_TOP">
<U>
<B>
<FONT SIZE="2">Top of the Form</FONT>
</B>
</U>
</A>
</DIV>
<!-- PageBreak END --><!-- SignatureHeader START -->
<P ALIGN="CENTER">
<FONT SIZE="2">
<B>
	SIGNATURES
</B>
</FONT>
</P>
<P ALIGN="LEFT">
<FONT SIZE="2">
	Pursuant to the requirements of the Securities Exchange Act of 1934, the
	registrant has duly caused this report to be signed on its behalf by the
	undersigned hereunto duly authorized.
</FONT>
</P>
<!-- SignatureHeader END --><!-- Signature START -->
<CENTER>
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
<TR VALIGN="BOTTOM">
<TD WIDTH="19%">
	&nbsp;
</TD>
<TD WIDTH="34%">
	&nbsp;
</TD>
<TD WIDTH="3%">
	&nbsp;
</TD>
<TD WIDTH="1%">
	&nbsp;
</TD>
<TD WIDTH="43%">
	&nbsp;
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD COLSPAN="3" VALIGN="TOP" ALIGN="LEFT">
<FONT SIZE="2">
	Pegasystems Inc.
</FONT>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP">
<FONT SIZE="2">
<I>
	June 8, 2005
</I>
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
<I>
	By:
</I>
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
<I>
	/s/ Christopher J. Sullivan
</I>
<BR>
</FONT>
</TD>
</TR>
<TR>
<TD VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<HR SIZE="1" NOSHADE>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
<I>
	Name: Christopher J. Sullivan
</I>
</FONT>
</TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD>
<FONT SIZE="2">
	&nbsp;
</FONT>
</TD>
<TD ALIGN="LEFT" VALIGN="TOP">
<FONT SIZE="2">
<I>
	Title: Senior Vice President, Chief Financial Officer and Treasurer
</I>
</FONT>
</TD>
</TR>
</TABLE>
</CENTER>
<!-- Signature END --><!-- HTMLFooter START -->
</BODY>
</HTML>
<!-- HTMLFooter END -->
</TEXT>
</DOCUMENT>
</SUBMISSION>
