REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

Avidity Partners Management LP's Holding History (CIK: 0001791827)

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

Q4 2025

Shares 50,300 Value ($000) $8,242 Avg Close $156.63 Range $134.19 - $174.01

Q3 2025

Shares 23,300 Value ($000) $3,115 Avg Close $121.47 Range $110.77 - $135.57

Q2 2025

Shares 106,500 Value ($000) $13,246 Avg Close $127.25 Range $102.97 - $148.94

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	50,300	$8,242	$156.63	$134.19 - $174.01
Q3 2025	23,300	$3,115	$121.47	$110.77 - $135.57
Q2 2025	106,500	$13,246	$127.25	$102.97 - $148.94