<SEC-DOCUMENT>0001193125-25-073456-index.html : 20250404
<SEC-HEADER>0001193125-25-073456.hdr.sgml : 20250404
<ACCEPTANCE-DATETIME>20250404162306
ACCESSION NUMBER:		0001193125-25-073456
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20250404
DATE AS OF CHANGE:		20250404

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			REPLIGEN CORP
		CENTRAL INDEX KEY:			0000730272
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				042729386
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-14656
		FILM NUMBER:		25815068

	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>DEFA14A
<SEQUENCE>1
<FILENAME>d885326ddefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: d885326ddefa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g885326dsp2aaa.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g885326dsp2aaa.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g885326dsp2aaaaa.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g885326dsp2aaaaa.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g885326dsp3.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g885326dsp3.jpg

</DOCUMENT>
</SEC-DOCUMENT>