REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

TOCQUEVILLE ASSET MANAGEMENT L.P.'s Holding History (CIK: 0000883961)

Note: Option positions (PUT/CALL) are excluded.

Q4 2021

Shares 1,005 Value ($000) $266 Avg Close $269.41 Range $243.29 - $306.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	1,005	$266	$269.41	$243.29 - $306.98