<SUBMISSION>
<ACCESSION-NUMBER>0001181431-05-047886
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>2
<PERIOD>20050817
<ITEMS>7.01
<ITEMS>9.01
<FILING-DATE>20050819
<DATE-OF-FILING-DATE-CHANGE>20050819
<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
<ACT>34
<FILE-NUMBER>001-11859
<FILM-NUMBER>051037410
</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
<SEQUENCE>1
<FILENAME>rrd89368.htm
<DESCRIPTION>PRESS RELEASE REGARDING WRITTEN CONSENT FOR STOCK REPURCHASE PROGRAM
<TEXT>


<html><head>
<title>Prepared By R.R. Donnelley Financial -- Form 8-K</title>
</head>
<body Bgcolor="white">

<hr Size="4" Noshade Color="#000000" Align="left">

<div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="4" Color="#000000">
<b>UNITED STATES </b></font></div>

<div Align="center"><font Face="times New Roman" Size="4" Color="#000000">
<b>SECURITIES AND EXCHANGE COMMISSION </b></font></div>

<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>Washington D.C., 20549 </b></font></div>

<div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="5" Color="#000000">
<b>Form 8-K </b></font></div> <div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="4" Color="#000000">
<b>Current Report </b></font></div>

<div Align="center"><font Face="times New Roman" Size="4" Color="#000000">
<b>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 </b></font></div>

<div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="3" Color="#000000">
<b>Date Of Report (Date Of Earliest Event Reported):&nbsp;&nbsp;08/17/2005 </b></font></div>




<div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="5" Color="#000000">
<b>Pegasystems Inc. </b></font></div>

<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>(Exact Name of Registrant as Specified in its Charter)</b></font></div>

<div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="3" Color="#000000">
<b>Commission File Number:&nbsp;&nbsp;1-11859 </b></font></div>

<div><font Size="1">&nbsp;</font></div>

<div Align="center"><table Cellspacing="0" Cellpadding="0" Width="100%" Border="0">
<tr>
<td Valign="bottom" Width="59%" Align="center">
<div Align="center"><font Face="times New Roman" Size="3" Color="#000000"><b>Massachusetts </b></font>
</div>
</td>
<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;&nbsp;</font>
</td>
<td Valign="bottom" Width="59%" Align="center">
<div Align="center"><font Face="times New Roman" Size="3" Color="#000000"><b>04-2787865 </b></font>
</div>
</td>
</tr>

<tr>
<td Valign="top" Align="center" Width="59%">
<div Style="margin-left:2%; Text-indent:-2%" Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>(State or Other Jurisdiction of</b></font>
</div>
</td>
<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;&nbsp;</font>
</td>
<td Valign="bottom" Align="center" Width="59%">
<div Align="center"><font Face="times New Roman" Size="2" Color="#000000"><b>(I.R.S. Employer</b></font>
</div>
</td>
</tr>

<tr>
<td Valign="top" Align="center" Width="59%">
<div Style="margin-left:2%; Text-indent:-2%" Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>Incorporation or Organization)</b></font>
</div>
</td>
<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;&nbsp;</font>
</td>
<td Valign="bottom" Align="center" Width="59%">
<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>Identification No.)</b></font>
</div>
</td>
</tr>

</table></div>

<div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="3" Color="#000000">
<b>101 Main Street, Cambridge, Massachusetts 02142 </b></font></div>


<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>(Address of Principal Executive Offices, Including Zip Code)</b></font>
</div>

<div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="3" Color="#000000">
<b>617-374-9600  </b></font>
</div>

<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>(Registrant&#146;s Telephone Number, Including Area Code) </b></font>
</div>



<div><font Size="1">&nbsp;</font></div>

<div Align="center"><font Face="times New Roman" Size="3" Color="#000000">
<b>Not Applicable </div><div Align="center"> </b></font>
</div>

<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>(Former name or former address, if changed since last report) </b></font>
</div>


<div><font Size="1">&nbsp;</font>
</div>




<div Align="left"><font Face="times New Roman" Size="2" Color="#000000">
<b>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:<BR><BR>
</b></font>


</div>



<div Align="left"><font Face="times New Roman" Size="2" Color="#000000">
<b>[&nbsp;&nbsp;]&nbsp;&nbsp;
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>

[&nbsp;&nbsp;]&nbsp;&nbsp;
Soliciting material pursuant to Rule 14a-12 under the Exchange Act(17CFR240.14a-12)<BR><BR>


[&nbsp;&nbsp;]&nbsp;&nbsp;
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act(17CFR240.14d-2(b))<BR><BR>


[&nbsp;&nbsp;]&nbsp;&nbsp;
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act(17CFR240.13e-4(c))
</b>

</font>
</div>





<div><font Size="1">&nbsp;</font>
</div>

<hr Size="4" Noshade Color="#000000" Align="left">


<p Style='page-break-before:always'>
<p Align="center"><font Size="2">
Items to be Included in this Report</b>
</font>





<div><font Size="1">&nbsp;</font></div>

<div align="left"><font Face="times New Roman" Size="2" Color="#000000">
<b>Item 7.01.&nbsp;&nbsp;&nbsp;&nbsp;Regulation FD Disclosure</b></font>
</div>

<div><font Size="1">&nbsp;</font>
</div>

<div  align="left" Style="text-indent:4%"><font Face="times New Roman" Size="2" Color="#000000">
On August 17, 2005, the Board of Directors of Pegasystems Inc. (the "Company") authorized an extension to the Company's share repurchase plan (the "Plan"), which was scheduled to expire on September 30, 2005.  The Plan will now be valid until June 30, 2006.  All of the remaining provisions of the Plan, including the authorization amount of $10 million, remain unchanged.</font>
</div>

<div><font Size="1">&nbsp;</font></div>



<div><font Size="1">&nbsp;</font></div>

<div align="left"><font Face="times New Roman" Size="2" Color="#000000">
<b>Item 9.01.&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits</b></font>
</div>

<div><font Size="1">&nbsp;</font>
</div>

<div  align="left" Style="text-indent:4%"><font Face="times New Roman" Size="2" Color="#000000">
Exhibits <p>99.1  Press Release, dated August 18, 2005, issued by Pegasystems Inc.</font>
</div>

<div><font Size="1">&nbsp;</font></div>



<hr  Size="3" Color="#cceeff" Width="100%" Align="center">
<p Align="center"><font Size="2">&nbsp;</font>
<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
<b>Signature(s) </b></font>
</div>

<div><font Size="1">&nbsp;</font></div>

<div align="left" Style="text-indent:4%"><font Face="times New Roman" Size="2" Color="#000000">
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>
</div>

<div><font Size="1">&nbsp;</font></div>

<div><table Cellspacing="0" Cellpadding="0" Width="100%" Border="0">




<tr>
	<td Valign="top" Colspan="3" Width="53%"> <div Style="margin-left:2%; Text-indent:-2%"><font Face="times New Roman" Size="2" Color="#000000"></font>
	</div>
	</td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font>
	</td>
	<td> <font Size="1">&nbsp;</font>
	</td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font>
	</td>	<td Valign="top" Align="center" Width="3%">
	<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
	</font>
	</div>
	</td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td Valign="top" Width="53%">
	<div Style="margin-left:2%; Text-indent:-2%"><font Face="times New Roman" Size="2" Color="#000000">
	Pegasystems Inc.</font>
	</div>	</td>
</tr>
<tr><td>&nbsp;</td></tr>
<tr><td>&nbsp;</td></tr>
<tr>
	<td Valign="top" Colspan="3" Width="53%"> <div Style="margin-left:2%; Text-indent:-2%"><font Face="times New Roman" Size="2" Color="#000000">
	Date: August 19, 2005.</font>
	</div>
	</td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font>
	</td>
	<td> <font Size="1">&nbsp;</font>
	</td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font>
	</td>	<td Valign="top" Align="center" Width="3%">
	<div Align="center"><font Face="times New Roman" Size="2" Color="#000000">
	By:</font>
	</div>
	</td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td Valign="top" Width="53%">
	<div Style="margin-left:2%; Text-indent:-2%"><font Face="times New Roman" Size="2" Color="#000000">
	/s/&nbsp;&nbsp;&nbsp;&nbsp;Shawn S. Hoyt</font>
	</div>
	<hr Noshade Align="left" Color="#000000">
	</td>
</tr>

<tr>
	<td> <font Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td> <font Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td> <font Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td> <font Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="53%">
	<div Style="margin-left:2%; Text-indent:-2%"><font Face="times New Roman" Size="2" Color="#000000">
	Shawn S. Hoyt</font>
	</div>
	</td>
</tr>

<tr>
	<td> <font Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td> <font Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td> <font Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td> <font Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="3%"><font Face="times New Roman" Size="1">&nbsp;</font></td>
	<td Valign="bottom" Width="53%">
	<div><font Face="times New Roman" Size="2" Color="#000000">General Counsel and Secretary</font>
	</div>
</td>
</tr>
<tr><td>&nbsp;</td></tr>
<tr><td>&nbsp;</td></tr>



</table></div>





<p Style='page-break-before:always'>
<hr  Size="3" Color="#cceeff" Width="100%" Align="center">

<p Align="center"><font Size="2">&nbsp;</font>
<div Align="center"><font Face="times New Roman" Size="3" Color="#000000">
<b>Exhibit Index </b></font>
</div>

<div><font Size="2">&nbsp;</font></div>

<div Align="center">
<table Cellspacing="0" Cellpadding="0" Width="100%" Border="0">




<tr>
	<td Valign="top" Align="left">
	<div Align="left"><font Face="times New Roman" Size="2" Color="#000000">
	<b>Exhibit&nbsp;No.</b></font>
	</div>
		<hr Size="2" Noshade Width="48" Color="#000000">
	</td>
	<td Valign="top" Width="3%" Align="left"><font Face="times New Roman" Size="2">&nbsp;&nbsp;</font></td>
	<td Valign="top" Width="100%" Align="left">
	<div><font Face="times New Roman" Size="2" Color="#000000">
	<b>Description</b></font>
	</div>
	<hr Size="2" Noshade Width="73" Align="left" Color="#000000">
	</td>
</tr>




<tr>
	<td Valign="top" Align="left">
	<div Align="top"><font Face="times New Roman" Size="1" Color="#000000">
	EX-99.1</font>
	</div>

	</td>
	<td Valign="top" Width="3%" Align="left"><font Face="times New Roman" Size="2">&nbsp;&nbsp;</font></td>
	<td Valign="top" Width="100%" Align="left">
	<div><font Face="times New Roman" Size="2" Color="#000000">
	Press Release, dated August 18, 2005, issued by Pegasystems Inc. </font>
	</div>
		</td>
</tr>





</div></table>



</body></html>

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>rrd89368_7538.htm
<DESCRIPTION>PRESS RELEASE, DATED AUGUST 18, 2005, ISSUED BY PEGASYSTEMS INC.
<TEXT>



<HTML>


<HEAD>








<TITLE>FOR IMMEDIATE RELEASE</TITLE>


</HEAD>


<BODY>





<B><FONT SIZE=3><P>&nbsp;</P>


<I><P ALIGN="JUSTIFY">FOR IMMEDIATE RELEASE</P>


</B></I></FONT><FONT SIZE=2>


<P>&nbsp;</P>


</FONT><B><I><FONT SIZE=3><P>For information, contact:</B> </P>


</I><P>Chris Sullivan &#9;&#9;&#9;&#9;&#9;&#9;&#9;&#9;&#9;</P>


<P>Chief Financial Officer&#9;&#9;&#9;&#9;&#9;&#9;</P>


<P>Pegasystems Inc.</P>


<P>(617) 866-6020&#9;&#9;&#9;&#9;&#9;&#9;</P>


<P>chris.sullivan@pega.com </P>





<P>&nbsp;</P>


<P>Beth Lewis</P>


<P>Director, Public and Investor Relations</P>


<P>Pegasystems Inc.</P>


<P>(617) 866-6077</P>


<P>beth.lewis@pega.com</P>


</FONT><FONT SIZE=1>


</FONT><FONT SIZE=3><P>&nbsp;</P>


<P>&nbsp;</P>


</FONT><B><FONT SIZE=4><P ALIGN="CENTER">Pegasystems Extends Share Repurchase Program</P>


</FONT><I><P ALIGN="CENTER"></P>


</I><P>CAMBRIDGE, Mass., August 18, 2005</B> <B>--</B> Pegasystems Inc. (Nasdaq: PEGA), a leading provider of smart business process management (BPM) software, today announced that its Board of Directors has authorized an extension of Pegasystems' previously announced share repurchase program.  The authorization extends the expiration date of the share repurchase program from September 30, 2005 to June 30, 2006.  The authorization amount of $10 million remains unchanged. As of June 30, 2005 the company had repurchased 409,121 shares at an average price of $5.75 for a total of approximately $2.4 million, leaving approximately $7.6 million available.  </P>





<P>At the company's discretion, the purchases will be made from time to time on the open market or in privately negotiated transactions.  Under the program, shares may be repurchased in such amounts as market conditions warrant, subject to regulatory and other considerations. The repurchase program will continue to be funded using the company's working capital.  As of June 30, 2005, Pegasystems had cash and short-term investments available of approximately $109.8 million. </P>


<FONT SIZE=3><P ALIGN="JUSTIFY"></P>


<B><P ALIGN="JUSTIFY">About</B></FONT><FONT SIZE=2> </FONT><B><FONT SIZE=3>Pegasystems  </P>


</B><P ALIGN="JUSTIFY">Pegasystems Inc. (Nasdaq: PEGA) provides software to automate complex, changing business processes.&nbsp;&nbsp;Our Business Process Management (BPM) solutions provide organizations with the agility critical to managing&nbsp;growth, productivity and compliance.&nbsp;Our solution&nbsp;unifies&nbsp;pure-play BPM software with a sophisticated Business Rules Engine&nbsp;to drive business effectiveness.&nbsp; This patented technology enables organizations to "build for&nbsp;change" and&nbsp;overcome the execution gap that&nbsp;occurs as&nbsp;evolving&nbsp;business objectives&nbsp;outpace the ability of business systems to respond.&nbsp; </P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">Pegasystems'&nbsp;BPM suite offers&nbsp;standards-based technology built in a rapid-solution development environment.&nbsp;&nbsp;Our BPM solution combines the capability&nbsp;to&nbsp;solve a full range of business process challenges&nbsp;with the opportunity&nbsp;to leverage existing&nbsp;technology investments.&nbsp;&nbsp;By enabling business process responsiveness, Pegasystems makes it easier for people and systems to work together. &nbsp;</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">Pegasystems'&nbsp;award-winning&nbsp;BPM suite is complemented with best-practice solution frameworks&nbsp;based on more than 20 years of experience helping Fortune&nbsp;500&nbsp;and other leading corporations in the&nbsp;financial services, insurance, healthcare,&nbsp;manufacturing&nbsp;and government markets.&nbsp;</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">Headquartered in Cambridge, MA, Pegasystems&nbsp;has regional offices in&nbsp;North America, Europe and the Pacific Rim.&nbsp;For more information, visit www.pega.com.&nbsp;</P>


</FONT>


<FONT SIZE=2><P><A NAME="tx74007_4"><A NAME="id_6"><A NAME="tx74007_6"><A NAME="id_10"><A NAME="tx74007_9"><A NAME="id_12"><A NAME="tx74007_11"><A NAME="document_2_html"><A NAME="doc_2"><A NAME="page_2_1"><A NAME="document_3_html"><A NAME="doc_3"><A NAME="page_3_1"><A NAME="_DV_M1"><A NAME="_DV_M2"><A NAME="_DV_M3"><A NAME="_DV_M4"><A NAME="_DV_M5"><A NAME="_DV_M6"><A NAME="_DV_M7"><A NAME="_DV_M8"><A NAME="_DV_M9"><A NAME="_DV_M10"><A NAME="_DV_M13"><A NAME="_DV_M15"><A NAME="_DV_M16"><A NAME="_DV_M17"><A NAME="_DV_M18"><A NAME="_DV_M19"><A NAME="_DV_M21"><A NAME="_DV_M23"><A NAME="_DV_M25"><A NAME="_DV_M28"><A NAME="_DV_M29"><A NAME="_DV_M31"><A NAME="_DV_M34"><A NAME="_DV_M36"><A NAME="_DV_M37"><A NAME="_DV_M38"><A NAME="_DV_M39"><A NAME="_DV_M41"><A NAME="_DV_M43"><A NAME="_DV_M45"><A NAME="_DV_M47"><A NAME="_DV_M49"><A NAME="_DV_M51"><A NAME="_DV_M53"><A NAME="_DV_M54"><A NAME="_DV_M57"><A NAME="_DV_M60"><A NAME="_DV_M61"><A NAME="_DV_M62"><A NAME="_DV_M67"><A NAME="_DV_M68"><A NAME="_DV_M69"><A NAME="_DV_M70"><A NAME="_DV_M71"><A NAME="_DV_M73"><A NAME="_DV_M75"><A NAME="_DV_M76"><A NAME="_DV_M84"><A NAME="_DV_M85"><A NAME="_DV_M86"><A NAME="_DV_M87"><A NAME="_DV_M88"><A NAME="_DV_M89"><A NAME="_DV_M91"><A NAME="_DV_M92"><A NAME="_DV_M101"><A NAME="_DV_M103"><A NAME="_DV_M105"><A NAME="_DV_M107"><A NAME="_DV_M109"><A NAME="_DV_M111"><A NAME="_DV_M112"><A NAME="_DV_M113"><A NAME="_DV_M114"><A NAME="_DV_M115"><A NAME="_DV_M116"><A NAME="_DV_M117"><A NAME="_DV_M118"><A NAME="_DV_M119"><A NAME="_DV_M120"><A NAME="_DV_M121"><A NAME="_DV_M123"><A NAME="_DV_M124"><A NAME="_DV_M125"><A NAME="_DV_M126"><A NAME="_DV_M128"><A NAME="_DV_M129"><A NAME="_DV_M130"><A NAME="_DV_M131"><A NAME="_DV_M132"><A NAME="_DV_M133"><A NAME="_DV_M134"><A NAME="_DV_M135"><A NAME="_DV_M137"><A NAME="_DV_M138"><A NAME="_DV_M139"><A NAME="_DV_M140"><A NAME="_DV_M141"><A NAME="_DV_M143"><A NAME="_DV_M148"><A NAME="_DV_M155"><A NAME="document_4_html"><A NAME="document_5_html"><A NAME="doc_5"><A NAME="page_5_1"><A NAME="document_6_html"></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></A></P>


</FONT></BODY>


</HTML>








</TEXT>
</DOCUMENT>
</SUBMISSION>
