REPLIGEN CORP — Director's Dealing 2021

Nov 2, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2021-10-29

Reporting Person: BARTHELEMY NICOLAS (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-10-29	Common Stock	M	1285	$128.18	Acquired	3192	Direct
2021-10-29	Common Stock	S	1285	$288.20	Disposed	1907	Direct
2021-10-29	Common Stock	S	360	$288.19	Disposed	1547	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-10-29	Stock Option (Right to Buy)	$128.18	M	1285	Acquired	2030-05-13	Common Stock (1285)	Direct

Footnotes

F1: $288.20 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $288.20 to $288.33, 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.

F2: This option is currently exercisable.