REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

GENEVA CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001009232)

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

Q4 2025

Shares 562,975 Value ($000) $92,249 Avg Close $156.63 Range $134.19 - $174.01

Q3 2025

Shares 596,768 Value ($000) $79,770 Avg Close $121.47 Range $110.77 - $135.57

Q2 2025

Shares 487,534 Value ($000) $60,639 Avg Close $127.25 Range $102.97 - $148.94

Q1 2025

Shares 143,543 Value ($000) $18,264 Avg Close $153.93 Range $125.39 - $182.52

Q4 2024

Shares 135,585 Value ($000) $19,516 Avg Close $143.40 Range $121.52 - $161.24

Q3 2024

Shares 138,677 Value ($000) $20,638 Avg Close $143.39 Range $117.63 - $172.65

Q2 2024

Shares 127,769 Value ($000) $16,107 Avg Close $156.74 Range $113.50 - $184.98

Q1 2024

Shares 118,718 Value ($000) $21,835 Avg Close $190.44 Range $167.40 - $211.13

Q4 2023

Shares 120,167 Value ($000) $21,606 Avg Close $155.67 Range $110.45 - $188.31

Q3 2023

Shares 118,003 Value ($000) $18,764 Avg Close $163.47 Range $134.64 - $181.26

Q2 2023

Shares 123,606 Value ($000) $17,485 Avg Close $160.35 Range $135.37 - $182.42

Q1 2023

Shares 130,153 Value ($000) $21,912 Avg Close $178.42 Range $147.53 - $200.98

Q4 2022

Shares 129,065 Value ($000) $21,852 Avg Close $181.39 Range $158.58 - $225.62

Q3 2022

Shares 141,413 Value ($000) $26,459 Avg Close $210.87 Range $157.33 - $262.26

Q2 2022

Shares 143,409 Value ($000) $23,290 Avg Close $158.16 Range $137.21 - $190.59

Q1 2022

Shares 143,619 Value ($000) $27,013 Avg Close $189.96 Range $156.28 - $265.78

Q4 2021

Shares 125,037 Value ($000) $33,115 Avg Close $269.41 Range $243.29 - $306.98

Q3 2021

Shares 117,633 Value ($000) $33,995 Avg Close $256.54 Range $193.03 - $327.32

Q2 2021

Shares 123,548 Value ($000) $24,662 Avg Close $193.99 Range $162.29 - $223.03

Q1 2021

Shares 127,952 Value ($000) $24,875 Avg Close $205.03 Range $173.09 - $228.84

Q4 2020

Shares 157,901 Value ($000) $30,258 Avg Close $181.94 Range $146.52 - $212.55

Q3 2020

Shares 176,723 Value ($000) $26,074 Avg Close $142.94 Range $120.12 - $159.97

Q2 2020

Shares 162,104 Value ($000) $20,038 Avg Close $117.64 Range $92.00 - $143.93

Q1 2020

Shares 83,602 Value ($000) $8,071 Avg Close $96.54 Range $78.41 - $109.94

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	562,975	$92,249	$156.63	$134.19 - $174.01
Q3 2025	596,768	$79,770	$121.47	$110.77 - $135.57
Q2 2025	487,534	$60,639	$127.25	$102.97 - $148.94
Q1 2025	143,543	$18,264	$153.93	$125.39 - $182.52
Q4 2024	135,585	$19,516	$143.40	$121.52 - $161.24
Q3 2024	138,677	$20,638	$143.39	$117.63 - $172.65
Q2 2024	127,769	$16,107	$156.74	$113.50 - $184.98
Q1 2024	118,718	$21,835	$190.44	$167.40 - $211.13
Q4 2023	120,167	$21,606	$155.67	$110.45 - $188.31
Q3 2023	118,003	$18,764	$163.47	$134.64 - $181.26
Q2 2023	123,606	$17,485	$160.35	$135.37 - $182.42
Q1 2023	130,153	$21,912	$178.42	$147.53 - $200.98
Q4 2022	129,065	$21,852	$181.39	$158.58 - $225.62
Q3 2022	141,413	$26,459	$210.87	$157.33 - $262.26
Q2 2022	143,409	$23,290	$158.16	$137.21 - $190.59
Q1 2022	143,619	$27,013	$189.96	$156.28 - $265.78
Q4 2021	125,037	$33,115	$269.41	$243.29 - $306.98
Q3 2021	117,633	$33,995	$256.54	$193.03 - $327.32
Q2 2021	123,548	$24,662	$193.99	$162.29 - $223.03
Q1 2021	127,952	$24,875	$205.03	$173.09 - $228.84
Q4 2020	157,901	$30,258	$181.94	$146.52 - $212.55
Q3 2020	176,723	$26,074	$142.94	$120.12 - $159.97
Q2 2020	162,104	$20,038	$117.64	$92.00 - $143.93
Q1 2020	83,602	$8,071	$96.54	$78.41 - $109.94