REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

HBK INVESTMENTS L P's Holding History (CIK: 0001011443)

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

Q4 2015

Shares 10,911 Value ($000) $309 Avg Close $28.84 Range $21.69 - $36.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	10,911	$309	$28.84	$21.69 - $36.00