<SEC-DOCUMENT>0001193125-19-199075-index.html : 20190722
<SEC-HEADER>0001193125-19-199075.hdr.sgml : 20190722
<ACCEPTANCE-DATETIME>20190722170904
ACCESSION NUMBER:		0001193125-19-199075
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		11
CONFORMED PERIOD OF REPORT:	20190716
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
ITEM INFORMATION:		Unregistered Sales of Equity Securities
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20190722
DATE AS OF CHANGE:		20190722

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:		19966333

	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>
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<DESCRIPTION>8-K
<TEXT>
Document 1 - file: d780262d8k.htm

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Document 2 - file: d780262dex41.htm

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<DESCRIPTION>EX-4.2
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Document 3 - file: d780262dex42.htm

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Document 4 - file: d780262dex991.htm

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Document 6 - file: g780262g0720045751827.jpg

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Document 7 - file: g780262g0720045751936.jpg

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Document 8 - file: g780262g0720045752045.jpg

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Document 9 - file: g780262g0720045752155.jpg

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Document 10 - file: g780262g0720045752279.jpg

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Document 11 - file: g780262img.jpg

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