<SEC-DOCUMENT>0001193125-16-594428-index.html : 20160518
<SEC-HEADER>0001193125-16-594428.hdr.sgml : 20160518
<ACCEPTANCE-DATETIME>20160518160111
ACCESSION NUMBER:		0001193125-16-594428
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		6
FILED AS OF DATE:		20160518
DATE AS OF CHANGE:		20160518
EFFECTIVENESS DATE:		20160518

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-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-211436
		FILM NUMBER:		161660497

	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-3ASR
<SEQUENCE>1
<FILENAME>d191626ds3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: d191626ds3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.6
<SEQUENCE>2
<FILENAME>d191626dex46.htm
<DESCRIPTION>EX-4.6
<TEXT>
Document 2 - file: d191626dex46.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>d191626dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 3 - file: d191626dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.1
<SEQUENCE>4
<FILENAME>d191626dex121.htm
<DESCRIPTION>EX-12.1
<TEXT>
Document 4 - file: d191626dex121.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>5
<FILENAME>d191626dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 5 - file: d191626dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g191626g54m58.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g191626g54m58.jpg

</DOCUMENT>
</SEC-DOCUMENT>