0000899243-23-004317.txt : 20230208 0000899243-23-004317.hdr.sgml : 20230208 20230208180953 ACCESSION NUMBER: 0000899243-23-004317 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20230206 FILED AS OF DATE: 20230208 DATE AS OF CHANGE: 20230208 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Madaus Martin D CENTRAL INDEX KEY: 0001310268 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 000-14656 FILM NUMBER: 23600339 MAIL ADDRESS: STREET 1: 290 CONCORD ROAD CITY: BILLERICA STATE: MA ZIP: 01821 ISSUER: 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 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 3 1 doc3.xml FORM 3 SUBMISSION X0206 3 2023-02-06 1 0000730272 REPLIGEN CORP RGEN 0001310268 Madaus Martin D C/O REPLIGEN CORPORATION 41 SEYON ST., BLDG 1, STE 100 WALTHAM MA 02453 1 0 0 0 Exhibit 24.1: Power of Attorney /s/ Martin D. Madaus 2023-02-08 EX-24.1 2 attachment1.htm EX-24.1 DOCUMENT

                               POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints each of Kimberly Brown and Kenneth O'Brien the true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for the undersigned and in the undersigned's name, place and stead, in any and
all capacities (until revoked in writing) to execute for and on behalf of the
undersigned, in any and all of the undersigned's capacities, any and all
statements on Forms 3, 4 and 5 with respect to the undersigned's holdings of and
transactions in securities issued by Repligen Corporation (the "Company") in
accordance with Sections 16(a) of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), and any and all regulations promulgated
thereunder, and to file the same, with all exhibits thereto, and any other
documents in connection therewith, with the Securities and Exchange Commission,
and with any other entity when and if such is mandated by the Exchange Act or by
the Bylaws of the Financial Industry Regulatory Authority, granting unto said
attorney-in-fact and agent full power and authority to do and perform each and
every act and thing requisite and necessary fully to all intents and purposes as
the undersigned might or could do in person thereby ratifying and confirming all
that said attorney-in-fact and agent, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of January 18, 2023.

                                     /s/ Martin D. Madaus
                                     ---------------------------
                                     Name: Martin D. Madaus