REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

True North Advisors, LLC's Holding History (CIK: 0001634556)

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

Q2 2020

Shares 6,000 Value ($000) $741 Avg Close $117.64 Range $92.00 - $143.93

Q1 2020

Shares 6,000 Value ($000) $579 Avg Close $96.54 Range $78.41 - $109.94

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2020	6,000	$741	$117.64	$92.00 - $143.93
Q1 2020	6,000	$579	$96.54	$78.41 - $109.94