REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

DEERFIELD MANAGEMENT COMPANY, L.P.'s Holding History (CIK: 0001009258)

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

Q4 2025

Shares 2,199 Value ($000) $360 Avg Close $156.63 Range $134.19 - $174.01

Q3 2025

Shares 12,909 Value ($000) $1,726 Avg Close $121.47 Range $110.77 - $135.57

Q2 2025

Shares 1,628 Value ($000) $202 Avg Close $127.25 Range $102.97 - $148.94

Q3 2024

Shares 1,418 Value ($000) $211 Avg Close $143.39 Range $117.63 - $172.65

Q2 2024

Shares 3,362 Value ($000) $424 Avg Close $156.74 Range $113.50 - $184.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,199	$360	$156.63	$134.19 - $174.01
Q3 2025	12,909	$1,726	$121.47	$110.77 - $135.57
Q2 2025	1,628	$202	$127.25	$102.97 - $148.94
Q3 2024	1,418	$211	$143.39	$117.63 - $172.65
Q2 2024	3,362	$424	$156.74	$113.50 - $184.98