Christine Gebski - 14 May 2021 Form 4 Insider Report for REPLIGEN CORP (RGEN)

Role: SVP, Filtration & Chromatography Exhibit 24.1: Power of Attorney
Signature: /s/ Kimberly Brown (Attorney in Fact)
Issuer symbol: RGEN
Transactions as of: 14 May 2021
Net transactions value: -$76,651
Form type: 4
Filing time: 18 May 2021, 07:52:56 UTC
Next filing: 02 Sep 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RGEN	Common Stock	Sale	$76,651	-445	-1.2%	$172.25	36,695	14 May 2021	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Sale of shares in the open market to cover tax liability resulting from the release of restricted stock units.
F2	$172.25 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.16 to $172.32, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Remarks:

SVP, Filtration & Chromatography Exhibit 24.1: Power of Attorney