REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q4 2025

Shares 3,362 Value ($000) $551 Avg Close $156.63 Range $134.19 - $174.01

Q1 2022

Shares 2,333 Value ($000) $439 Avg Close $189.96 Range $156.28 - $265.78

Q4 2021

Shares 8,671 Value ($000) $2,296 Avg Close $269.41 Range $243.29 - $306.98

Q3 2021

Shares 5,244 Value ($000) $1,515 Avg Close $256.54 Range $193.03 - $327.32

Q2 2021

Shares 2,337 Value ($000) $467 Avg Close $193.99 Range $162.29 - $223.03

Q1 2021

Shares 15,374 Value ($000) $2,989 Avg Close $205.03 Range $173.09 - $228.84

Q4 2020

Shares 15,644 Value ($000) $2,997 Avg Close $181.94 Range $146.52 - $212.55

Q3 2020

Shares 12,838 Value ($000) $1,894 Avg Close $142.94 Range $120.12 - $159.97

Q2 2020

Shares 11,079 Value ($000) $1,369 Avg Close $117.64 Range $92.00 - $143.93

Q3 2019

Shares 7,995 Value ($000) $613 Avg Close $87.47 Range $75.80 - $99.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,362	$551	$156.63	$134.19 - $174.01
Q1 2022	2,333	$439	$189.96	$156.28 - $265.78
Q4 2021	8,671	$2,296	$269.41	$243.29 - $306.98
Q3 2021	5,244	$1,515	$256.54	$193.03 - $327.32
Q2 2021	2,337	$467	$193.99	$162.29 - $223.03
Q1 2021	15,374	$2,989	$205.03	$173.09 - $228.84
Q4 2020	15,644	$2,997	$181.94	$146.52 - $212.55
Q3 2020	12,838	$1,894	$142.94	$120.12 - $159.97
Q2 2020	11,079	$1,369	$117.64	$92.00 - $143.93
Q3 2019	7,995	$613	$87.47	$75.80 - $99.25