<SEC-DOCUMENT>0001193125-13-366642.txt : 20130913
<SEC-HEADER>0001193125-13-366642.hdr.sgml : 20130913
<ACCEPTANCE-DATETIME>20130913163033
ACCESSION NUMBER:		0001193125-13-366642
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20130910
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20130913
DATE AS OF CHANGE:		20130913

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			REPLIGEN CORP
		CENTRAL INDEX KEY:			0000730272
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				042729386
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-14656
		FILM NUMBER:		131096630

	BUSINESS ADDRESS:	
		STREET 1:		41 SEYON STREET
		STREET 2:		BUILDING 1, SUITE 100
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02453
		BUSINESS PHONE:		7814499560

	MAIL ADDRESS:	
		STREET 1:		41 SEYON STREET
		STREET 2:		BUILDING 1, SUITE 100
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02453
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>d596745d8k.htm
<DESCRIPTION>FORM 8-K
<TEXT>
<HTML><HEAD>
<TITLE>Form 8-K</TITLE>
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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:14pt; font-family:Times New Roman" ALIGN="center"><B>UNITED STATES </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:14pt; font-family:Times New Roman" ALIGN="center"><B>SECURITIES AND EXCHANGE COMMISSION </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Washington, D.C. 20549 </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
<P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>FORM 8-K
</B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center> <P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>CURRENT REPORT </B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>PURSUANT
TO SECTION&nbsp;13 OR 15(d) OF THE </B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>SECURITIES EXCHANGE ACT OF 1934 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Date of Report (Date of earliest event reported): September&nbsp;10, 2013 </B></P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center> <P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:22pt; font-family:Times New Roman" ALIGN="center"><B>REPLIGEN CORPORATION </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(Exact name of registrant as specified in its charter) </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:8pt" ALIGN="center">


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<TD VALIGN="top" ALIGN="center"><B>Delaware</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"><B>0-14656</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"><B>04-2729386</B></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:8pt">
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(State or other jurisdiction</B></P>
<P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>of incorporation)</B></P></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"><B>(Commission File Number)</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(IRS Employer</B></P>
<P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>Identification No.)</B></P></TD></TR>
</TABLE> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" ALIGN="center">


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<TD VALIGN="top" ALIGN="center"><B>41 Seyon Street, Bldg. 1, Suite 100, Waltham, MA</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"><B>02453</B></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:8pt">
<TD VALIGN="top" ALIGN="center"><B>(Address of principal executive offices)</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"><B>(Zip Code)</B></TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Registrant&#146;s telephone number, including area code (781)&nbsp;250-0111 </B></P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(Former name or former address, if changed since last report.) </B></P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center> <P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">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 (see General Instruction A.2. below): </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
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<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) </TD></TR></TABLE>

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<TR>
<TD WIDTH="9%" VALIGN="top" ALIGN="left"><B>Item&nbsp;5.02.</B></TD>
<TD ALIGN="left" VALIGN="top"><B>Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. </B></TD></TR></TABLE>
<P STYLE="margin-top:6pt; margin-bottom:0pt; text-indent:4%; font-size:10pt; font-family:Times New Roman">(e) On September&nbsp;10, 2013, Repligen Corporation (&#147;<U>Repligen</U>&#148; or &#147;<U>Company</U>&#148;) entered into a Separation
Agreement (the &#147;<U>Separation Agreement</U>&#148;) with Jonathan Lieber in connection with the previously disclosed termination of Mr.&nbsp;Lieber&#146;s employment with the Company effective as of the close of business on August&nbsp;23, 2013
(the &#147;<U>Termination Date</U>&#148;). Under the Separation Agreement, the Company agreed to provide for a period of six months (i)&nbsp;continuation of Mr.&nbsp;Lieber&#146;s base salary in effect on the Termination Date and (ii)&nbsp;if
elected by Mr.&nbsp;Lieber, health insurance plan benefits with the cost of the regular premium for such benefits to be shared in the same relative proportion by the Company and Mr.&nbsp;Lieber as in effect on the Termination Date. In addition, the
Company agreed to accelerate the vesting of a portion of Mr.&nbsp;Lieber&#146;s stock option equal to 22,000 shares that would have vested on September 20, 2013. The Separation Agreement is subject to non-revocation of a general release by
Mr.&nbsp;Lieber. The description of the Separation Agreement does not purport to be complete and is qualified in its entirety by reference to Exhibit 10.1 to this Current Report, which is incorporated by reference herein. </P>
<P STYLE="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TR>
<TD WIDTH="9%" VALIGN="top" ALIGN="left"><B>Item&nbsp;9.01.</B></TD>
<TD ALIGN="left" VALIGN="top"><B>Financial Statements and Exhibits. </B></TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" ALIGN="center">


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<TD VALIGN="top" NOWRAP>10.1</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top">Separation Agreement, dated September 10, 2013, by and between the Company and Jonathan Lieber</TD></TR>
</TABLE>

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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>SIGNATURES </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; text-indent:4%; font-size:10pt; font-family:Times New Roman">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. </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top" COLSPAN="3"><B>REPLIGEN CORPORATION</B></TD></TR>
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<TD VALIGN="top">Date: September&nbsp;13, 2013</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="right">By:</TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">/s/ Walter C. Herlihy</TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Walter C. Herlihy</P> <P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman">President and Chief Executive
Officer</P></TD></TR>
</TABLE>

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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>EXHIBIT INDEX </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1.00pt solid #000000; width:39.10pt; font-size:8pt; font-family:Times New Roman"><B>Exhibit&nbsp;No.</B></P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" STYLE="border-bottom:1.00pt solid #000000"> <P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman"><B>Exhibit</B></P></TD></TR>


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<TD VALIGN="top" NOWRAP>10.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Separation Agreement, dated September 10, 2013, by and between the Company and Jonathan Lieber</TD></TR>
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<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>2
<FILENAME>d596745dex101.htm
<DESCRIPTION>EX-10.1
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<TITLE>EX-10.1</TITLE>
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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>EXHIBIT 10.1 </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<IMG SRC="g596745log0.jpg" ALT="LOGO">
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<TD VALIGN="bottom"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Repligen Corporation</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">41 Seyon Street</P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Building #1, Suite 100</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Waltham,&nbsp;MA&nbsp;02453</P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">Telephone:&nbsp;781-250-0111</FONT></FONT></P>
<P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman">Telefax: <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">781-250-0115</FONT></FONT></P></TD></TR>
</TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P> <P STYLE="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">August&nbsp;23, 2013 </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B><U>BY HAND </U></B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B><U>PERSONAL AND CONFIDENTIAL </U></B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Jonathan Lieber </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">4 High Rock Terrace </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Chestnut Hill, MA 02467 </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Re:&nbsp;&nbsp;&nbsp;&nbsp; <U>Separation Agreement</U> </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Dear Jon: </P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">This letter confirms your separation from employment
with Repligen Corporation (the &#147;Company&#148;), effective August&nbsp;23, 2013 (the &#147;Termination Date&#148;) and sets forth the terms of a proposed agreement relating to your separation (the &#147;Separation Agreement&#148;). </P>
<P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>I. <U>Entitlements and Obligations</U> </B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">As you know, you
and the Company entered into an employment agreement dated September&nbsp;20, 2012 (the &#147;Employment Agreement&#148;). In connection with the ending of your employment, and regardless of whether you enter into the Separation Agreement, the
Company will pay you the Accrued Obligations, defined in the Employment Agreement as: (i)&nbsp;the portion of your Base Salary that has accrued prior to any termination of your employment with the Company that has not yet been paid; (ii)&nbsp;an
amount equal to the value of your accrued unused vacation days; and (iii)&nbsp;the amount of any expenses properly incurred by you on behalf of the Company prior to any such termination and not yet reimbursed, including reimbursement in the amount
of $575.80 for a plane ticket previously purchased, after the Company&#146;s timely receipt of appropriate documentation pursuant to the Company&#146;s business expense reimbursement policy. In addition, you have the right to continue group medical
and dental care coverage after the termination of your employment under the law known as &#147;COBRA,&#148; which will be described in a separate written notice. This will also confirm that unless you enter the proposed Separation Agreement below,
none of the Restricted Stock Award or the Option Grant (each as defined in the Employment Agreement) or any other equity award(s) made to you under the Company&#146;s 2012 Stock Option and Incentive Plan or otherwise have vested and thus all are
forfeited as of the Termination Date. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>II. <U>Separation Agreement</U> </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">In addition, because your employment is being terminated without Cause for the purposes of the Employment Agreement, you are eligible to receive the
Termination Benefits, as defined in the Employment Agreement, subject to your execution and non-revocation of this Separation Agreement which includes a general release in favor of the Company. </P>

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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Jonathan Lieber </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">August 23, 2013 </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"> Page
 2
 </P> <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P>
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The remainder of this letter constitutes the proposed Separation Agreement between you and the Company
referenced in Section&nbsp;8 of the Employment Agreement. The purpose of this Separation Agreement is to establish an amicable arrangement for ending your employment relationship, including releasing the Company and related persons or entities from
any claims and permitting you to receive the Termination Benefits. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">You acknowledge that you are entering into this Separation Agreement knowingly and
voluntarily. It is customary in employment separation agreements for the departing employee to release the employer from any possible claims, even if the employer believes, as is the case here, that no such claims exist. By proposing and entering
into this Separation Agreement, the Company is not admitting in any way that it violated any legal obligation that it owed to you. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">With those
understandings, you and the Company agree as follows: </P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>1. Resignation from Employment </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">This confirms your separation from employment with the Company effective on August&nbsp;23, 2013 (the &#147;Termination Date&#148;). You further confirm that
you have resigned from any and all other positions that you hold with the Company including, without implication of limitation, as a director, trustee, and officer, or with any subsidiary or other affiliate of the Company, effective on the
Termination Date. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>2. Severance Benefits </B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(a)
<U>Severance Pay</U></B>. As consideration for you entering this Separation Agreement, you shall be entitled to the following Termination Benefits for a period of six months: </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">(i)</TD>
<TD ALIGN="left" VALIGN="top">continuation of your base salary at your current rate in effect in accordance with the terms of the Company&#146;s standard payroll schedule (&#147;Salary Continuation Payments&#148;); and </TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%">&nbsp;</TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left">(ii)</TD>
<TD ALIGN="left" VALIGN="top">if you elect COBRA, continuation of group health plan benefits to the extent authorized and consistent with 29 U.S.C. &#167;&nbsp;1161 et seq., (commonly known as &#147;COBRA&#148;), with the cost of the regular premium
for such benefits shared in the same relative proportion by the Company and you as in effect on the Termination Date. </TD></TR></TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The Salary
Continuation Payments shall commence after the Effective Date of this Separation Agreement as defined in Section&nbsp;7(h). </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">2 </P>


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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Jonathan Lieber </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">August 23, 2013 </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"> Page
 3
 </P> <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P>
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(b) </B><U>None of the Restricted Stock Award or the Option Grant (each as defined in the Employment
Agreement) or any other equity award(s) made to you under the Company&#146;s 2012 Stock Option and Incentive Plan or otherwise have vested. Notwithstanding the foregoing, upon the Effective Date of this Separation Agreement, the Company will
accelerate the vesting with respect to 22,000 shares of Stock Options so that such Stock Options are vested as of the Effective Date. The 22,000 shares of Stock Options shall be exercisable for a period of three months after the Termination
Date.</U> </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(c) <U>Tax Treatment</U></B>. The Company shall undertake to make deductions, withholdings and tax reports with respect to the payment under
this Separation Agreement to the extent that it reasonably and in good faith determines that it is required to make such deductions, withholdings and tax reports. Payment under this Separation Agreement shall be in amounts net of any such deductions
or withholdings. Nothing in this Separation Agreement shall be construed to require the Company to make any payments to compensate you for any adverse tax effect associated with any payments or benefits or for any deduction or withholding from any
payment or benefit. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>3. Confidentiality, Non-Solicitation and Patent Agreement </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">You acknowledge and affirm your ongoing obligations under the terms of your Confidentiality, Non-Solicitation, and Patent Agreement (&#147;the
&#147;Confidentiality Agreement&#148;) which is attached hereto as Exhibit&nbsp;A and incorporated herein by this reference. You are bound by the terms of your Confidentiality Agreement regardless of whether you execute this Separation Agreement,
including the confidentiality and non-solicitation obligations detailed therein. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>4. Return of Property </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">You confirm that on or before the Termination Date you will return to the Company, all Company property, including, without limitation, computer equipment,
software, keys and access cards, credit cards, files and any documents (including computerized data and any copies made of any computerized data or software) containing information concerning the Company, its business or its business relationships.
You also commit to deleting and finally purging any duplicates of files or documents that may contain Company information from any computer or other device that remains your property after the Termination Date. In the event that you discover that
you continue to retain any such property, you shall return it to the Company immediately. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>5. Releases of Claims </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(a) <U>Your Release of Claims</U></B>. In consideration for, among other terms, the severance payments discussed in Section&nbsp;2, to which you acknowledge
you would otherwise not be entitled, you voluntarily release and forever discharge the Company, its subsidiaries or other affiliated and related entities, its and their respective predecessors, successors and assigns, its and their respective
employee benefit plans and fiduciaries of such plans, and the current and former </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">3 </P>


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 <P STYLE="margin-top:0pt; margin-bottom:0pt; padding-top:0pt; font-size:10pt; font-family:Times New Roman">Jonathan Lieber </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">August 23, 2013 </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"> Page
 4
 </P> <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P>
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">
officers, trustees, shareholders, employees, attorneys, accountants and agents of each of the foregoing in their official and personal capacities (collectively referred to as the
&#147;Releasees&#148;) generally from all claims, demands, debts, damages and liabilities of every name and nature, known or unknown (&#147;Claims&#148;) that, as of the date when you sign this Separation Agreement, you have, ever had, now claim to
have or ever claimed to have had against any or all of the Releasees. This release includes, without limitation, all Claims: </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top">relating to your employment by and termination of employment with the Company; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top">of wrongful discharge or violation of public policy; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top">of breach of contract; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top">of defamation or other torts; </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top">of retaliation or discrimination under federal, state or local law (including, without limitation, Claims of discrimination or retaliation under the Age Discrimination in Employment Act, the Americans with Disabilities
Act, and Title VII of the Civil Rights Act of 1964); </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top">under any other federal or state statute (including, without limitation, Claims under the Fair Labor Standards Act); </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top">for wages, bonuses, incentive compensation, vacation pay or any other compensation or benefits, either under the Massachusetts Wage Act, M.G.L. c. 149, &#167;&#167;148-150C, or otherwise; and </TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="2%" VALIGN="top" ALIGN="left">&#149;</TD>
<TD WIDTH="1%" VALIGN="top">&nbsp;</TD>
<TD ALIGN="left" VALIGN="top">for damages or other remedies of any sort, including, without limitation, compensatory damages, punitive damages, injunctive relief and attorneys&#146; fees; </TD></TR></TABLE>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B></B><I>provided</I><B></B>, however, that this release shall not affect your rights under this Separation Agreement.<B> </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">You agree not to accept damages of any nature, other equitable or legal remedies for your own benefit or attorneys&#146; fees or costs from any of the
Releasees with respect to any Claim released by this Separation Agreement. As a material inducement to the Company to enter into this Separation Agreement, you represent that you have not assigned any Claim to any third party. It is hereby
acknowledged that if the severance payment is not paid, or is suspended or recouped pursuant to applicable law, this release shall be null and void. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(b) <U>Release of Company&#146;s Claims</U></B>. In consideration for, among other terms, your release of Claims pursuant to the preceding subsection, the
Company voluntarily releases and forever discharges you generally from all Claims that, as of the date when the Company signs this Separation Agreement, the Company has, ever had, now claims to have or ever claimed to have had against you,
including, without limitation, all Claims relating to your employment by and termination of employment with the Company; provided that the Company does not release you from any civil Claim of fraud or other conduct that satisfies the elements of a
criminal offense (&#147;Excepted Claims&#148;). The undersigned has no knowledge or reason to believe that the Company has any Excepted Claim against you. </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">4 </P>


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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Jonathan Lieber </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">August 23, 2013 </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"> Page
 5
 </P> <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P>
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>6. Nondisparagement </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">You agree not to make any disparaging statements concerning the Company or any of its affiliates or current or former officers, directors, trustees,
shareholders, employees or agents. You represent that no such disparaging statements have previously been made. The Company agrees to direct those officers and directors who it informs of this Agreement not to make any disparaging statements about
you to anyone outside the Company and represents that it is not aware that any such disparaging statements have previously been made. These nondisparagement obligations shall not in any way affect your or the Company&#146;s obligation to testify
truthfully in any legal proceeding or to respond accurately with respect to any regulatory inquiry. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>7. Other Provisions </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(a) <U>Termination and Return of Payment</U>.</B> If you breach any of your obligations under this Separation Agreement, including without limitations your
obligations under the Confidentiality Agreement, in addition to any other legal or equitable remedies it may have for such breach, the Company shall have the right to terminate or suspend its payment to you under this Separation Agreement. To the
extent that such payment has already been made, you will be obligated to return such payment to the Company upon demand. The termination, suspension or recoupment of such payment in the event of your breach will not affect your continuing
obligations under this Separation Agreement including the Confidentiality Agreement. In addition, if you pursue a court action or arbitration in which you seek any remedy based on any Claim that is within the scope of Claims that you state that you
are releasing in this Separation Agreement, the Company shall have the right to terminate, suspend or recoup its payment to you under this Separation Agreement; provided that the Company shall not seek recoupment if you bring any Claim based on the
Age Discrimination in Employment Act with respect to which you assert that your release in this Agreement is ineffective, except to the extent that a court determines in its discretion to award restitution, recoupment or setoff to the Company in
accordance with applicable law. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(b) <U>Absence of Reliance</U></B>. In signing this Separation Agreement, you are not relying upon any promises or
representations made by anyone at or on behalf of the Company. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(c) <U>Enforceability</U></B>. If any portion or provision of this Separation Agreement
including the Confidentiality Agreement shall to any extent be declared illegal or unenforceable by a court of competent jurisdiction, then the remainder of this Separation Agreement including the Confidentiality Agreement, or the application of
such portion or provision in circumstances other than those as to which it is so declared illegal or unenforceable, shall not be affected thereby, and each portion and provision of this Separation Agreement including the Confidentiality Agreement
shall be valid and enforceable to the fullest extent permitted by law. </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">5 </P>


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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Jonathan Lieber </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">August 23, 2013 </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"> Page
 6
 </P> <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P>
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(d) <U>Waiver</U></B>. No waiver of any provision of this Separation Agreement shall be effective unless
made in writing and signed by the waiving party. The failure of a party to require the performance of any term or obligation of this Separation Agreement including the Confidentiality Agreement, or the waiver by a party of any breach of this
Separation Agreement including the Confidentiality Agreement, shall not prevent any subsequent enforcement of such term or obligation or be deemed a waiver of any subsequent breach. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(e) <U>Relief</U></B>. You agree that it would be difficult to measure any harm caused to the Company that might result from any breach by you of your
promises set forth in Sections&nbsp;3, 4 and 6 (including the related continuing promises under the Confidentiality Agreement) (the &#147;Specified Sections&#148;). You further agree that money damages would be an inadequate remedy for any breach of
any of the Specified Sections. Accordingly, you agree that if you breach, or propose to breach, any portion of your obligations under any of the Specified Sections, the Company shall be entitled, in addition to all other remedies it may have, to an
injunction or other appropriate equitable relief to restrain any such breach, without showing or proving any actual damage to the Company and without the necessity of posting a bond. If the Company prevails in any action to enforce any of the
Specified Sections, then you also shall be liable to the Company for reasonable attorneys&#146; fees and costs incurred by the Company in enforcing any of the Specified Sections. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(f) <U>Governing Law; Interpretation</U></B>. This Separation Agreement including the Confidentiality Agreement shall be interpreted and enforced under the
laws of the Commonwealth of Massachusetts, without regard to conflict of law principles. In the event of any dispute, this Separation Agreement including the Confidentiality Agreement is intended by the parties to be construed as a whole, to be
interpreted in accordance with its fair meaning, and not to be construed strictly for or against either you or the Company or the &#147;drafter&#148; of all or any portion of this Separation Agreement. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(g) <U>Entire Agreement</U></B>. This Separation Agreement, including the Confidentiality Agreement which has been incorporated herein by reference,
constitute the entire agreement between you and the Company. This Separation Agreement supersedes any previous agreements or understandings between you and the Company. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>(h) <U>Time for Consideration; Effective Date</U></B>. You acknowledge that you have been given the opportunity to consider this Agreement for twenty-one
(21)&nbsp;days before signing it (the &#147;Consideration Period&#148;) and that you have knowingly and voluntarily entered into this Separation Agreement. To accept this Separation Agreement, you must return a signed original of this Separation
Agreement so that it is received by Walter Herlihy at or before the expiration of the Consideration Period. If you sign this Separation Agreement before the end of the Consideration Period, you acknowledge by signing this Separation Agreement that
such decision was entirely voluntary and that you had the opportunity to consider this Separation Agreement for the entire Consideration Period. For the period of seven (7)&nbsp;days from the date when you sign this Separation Agreement, you have
the right to revoke this Separation Agreement by written notice to the undersigned. For such a revocation to be effective, it must be delivered so that it is received by Walter Herlihy at or before the expiration of the seven (7)&nbsp;day revocation
period. This Separation Agreement shall not become effective or enforceable during the revocation period. This Separation Agreement shall become effective on the first business day following the expiration of the revocation period (the
&#147;Effective Date&#148;). </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">6 </P>


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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Jonathan Lieber </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">August 23, 2013 </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"> Page
 7
 </P> <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P>
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Please indicate your agreement to the terms of this Separation Agreement by signing and returning to Walter
Herlihy the original of this letter within the time period set forth above. </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" COLSPAN="3">Very truly yours,</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD COLSPAN="3" VALIGN="top"></TD></TR>
<TR>
<TD HEIGHT="16" COLSPAN="3"></TD>
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<TD VALIGN="top" COLSPAN="3"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">REPLIGEN CORPORATION</P> <P STYLE="font-size:12pt; margin-top:0pt; margin-bottom:1pt">&nbsp;</P></TD>
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<TD VALIGN="top">By:</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top">/s/ Walter C. Herlihy</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
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<TD VALIGN="top">9/9/13</TD></TR>
<TR STYLE="font-size:1px; ">
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="border-top:1.00px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom">&nbsp;</TD>
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<TD VALIGN="bottom">&nbsp;</TD>
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<TD VALIGN="bottom"><B></B>Date<B></B></TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">You are advised to consult with an attorney before signing this Separation Agreement. This is a legal document. Your signature
will commit you to its terms. By signing below, you acknowledge that you have carefully read and fully understand all of the provisions of this Separation Agreement and that you are knowingly and voluntarily entering into this Separation Agreement.
</P> <P STYLE="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt">


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<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">/s/ Jonathan Lieber</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
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<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom">9/10/13</TD></TR>
<TR STYLE="font-size:1px; ">
<TD VALIGN="bottom"> <P STYLE="border-top:1.00px solid #000000">&nbsp;</P></TD>
<TD VALIGN="bottom">&nbsp;</TD>
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<TD VALIGN="bottom"> <P STYLE="border-top:1.00px solid #000000">&nbsp;</P></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Jonathan Lieber</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom">Date</TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Attachment A: Confidentiality, Non-Solicitation, and Patent Agreement </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">7 </P>

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