<SEC-DOCUMENT>0001193125-19-162772-index.html : 20190531
<SEC-HEADER>0001193125-19-162772.hdr.sgml : 20190531
<ACCEPTANCE-DATETIME>20190531160157
ACCESSION NUMBER:		0001193125-19-162772
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20190529
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Completion of Acquisition or Disposition of Assets
ITEM INFORMATION:		Unregistered Sales of Equity Securities
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20190531
DATE AS OF CHANGE:		20190531

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:		19870383

	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>d754343d8k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: d754343d8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>2
<FILENAME>d754343dex101.htm
<DESCRIPTION>EX-10.1
<TEXT>
Document 2 - file: d754343dex101.htm

</DOCUMENT>
</SEC-DOCUMENT>