<SEC-DOCUMENT>0001193125-19-196499-index.html : 20190718
<SEC-HEADER>0001193125-19-196499.hdr.sgml : 20190718
<ACCEPTANCE-DATETIME>20190718160203
ACCESSION NUMBER:		0001193125-19-196499
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		9
CONFORMED PERIOD OF REPORT:	20190716
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20190718
DATE AS OF CHANGE:		20190718

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:		19961361

	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
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Document 1 - file: d779469d8k.htm

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<FILENAME>d779469dex11.htm
<DESCRIPTION>EX-1.1
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Document 2 - file: d779469dex11.htm

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<FILENAME>d779469dex12.htm
<DESCRIPTION>EX-1.2
<TEXT>
Document 3 - file: d779469dex12.htm

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<DOCUMENT>
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<SEQUENCE>4
<FILENAME>d779469dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 4 - file: d779469dex51.htm

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<FILENAME>d779469dex52.htm
<DESCRIPTION>EX-5.2
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Document 5 - file: d779469dex52.htm

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<DESCRIPTION>EX-99.1
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Document 6 - file: d779469dex991.htm

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<TYPE>EX-99.2
<SEQUENCE>7
<FILENAME>d779469dex992.htm
<DESCRIPTION>EX-99.2
<TEXT>
Document 7 - file: d779469dex992.htm

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<SEQUENCE>8
<FILENAME>g779469g0718120537599.jpg
<DESCRIPTION>GRAPHIC
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Document 8 - file: g779469g0718120537599.jpg

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Document 9 - file: g779469g0718120757828.jpg

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