REPLIGEN CORP — Director's Dealing 2021

Nov 4, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2021-11-02

Reporting Person: RYAN THOMAS F JR (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-11-02	Common Stock	M	1285	$128.18	Acquired	14622	Direct
2021-11-02	Common Stock	S	1285	$302.00	Acquired	13337	Direct
2021-11-04	Common Stock	S	1000	$288.00	Disposed	12337	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-11-02	Stock Option (Right to Buy)	$128.18	M	1285	Acquired	2030-05-13	Common Stock (1285)	Direct

Footnotes

F1: Includes three stock option exercises totaling 12,366 shares which were not previously included in the holder's beneficial ownership totals.

F2: $302.00 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $301.85 to $302.03, 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.

F3: This option is currently exercisable