<SEC-DOCUMENT>0001193125-14-222092-index.html : 20140623
<SEC-HEADER>0001193125-14-222092.hdr.sgml : 20140623
<ACCEPTANCE-DATETIME>20140602154350
ACCESSION NUMBER:		0001193125-14-222092
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20140602
DATE AS OF CHANGE:		20140602
EFFECTIVENESS DATE:		20140602

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:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-196456
		FILM NUMBER:		14883883

	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>S-8
<SEQUENCE>1
<FILENAME>d738592ds8.htm
<DESCRIPTION>FORM S-8
<TEXT>
Document 1 - file: d738592ds8.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>d738592dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: d738592dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>d738592dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: d738592dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>4
<FILENAME>d738592dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 4 - file: d738592dex991.htm

</DOCUMENT>
</SEC-DOCUMENT>