REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

BANK OF MONTREAL /CAN/'s Holding History (CIK: 0000927971)

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

Q4 2025

Shares 18,460 Value ($000) $3,025 Avg Close $156.63 Range $134.19 - $174.01

Q3 2025

Shares 22,704 Value ($000) $3,035 Avg Close $121.47 Range $110.77 - $135.57

Q2 2025

Shares 34,606 Value ($000) $4,304 Avg Close $127.25 Range $102.97 - $148.94

Q1 2025

Shares 32,982 Value ($000) $4,197 Avg Close $153.93 Range $125.39 - $182.52

Q4 2024

Shares 35,989 Value ($000) $5,180 Avg Close $143.40 Range $121.52 - $161.24

Q3 2024

Shares 49,568 Value ($000) $7,233 Avg Close $143.39 Range $117.63 - $172.65

Q2 2024

Shares 36,752 Value ($000) $4,641 Avg Close $156.74 Range $113.50 - $184.98

Q1 2024

Shares 35,177 Value ($000) $6,510 Avg Close $190.44 Range $167.40 - $211.13

Q4 2023

Shares 43,313 Value ($000) $8,122 Avg Close $155.67 Range $110.45 - $188.31

Q3 2023

Shares 46,647 Value ($000) $7,780 Avg Close $163.47 Range $134.64 - $181.26

Q2 2023

Shares 175,342 Value ($000) $27,937 Avg Close $160.35 Range $135.37 - $182.42

Q1 2023

Shares 230,505 Value ($000) $39,739 Avg Close $178.42 Range $147.53 - $200.98

Q4 2022

Shares 27,986 Value ($000) $4,787 Avg Close $181.39 Range $158.58 - $225.62

Q3 2022

Shares 25,535 Value ($000) $5,557 Avg Close $210.87 Range $157.33 - $262.26

Q2 2022

Shares 36,230 Value ($000) $6,083 Avg Close $158.16 Range $137.21 - $190.59

Q1 2022

Shares 36,725 Value ($000) $6,930 Avg Close $189.96 Range $156.28 - $265.78

Q4 2021

Shares 28,523 Value ($000) $7,458 Avg Close $269.41 Range $243.29 - $306.98

Q3 2021

Shares 40,251 Value ($000) $11,535 Avg Close $256.54 Range $193.03 - $327.32

Q2 2021

Shares 55,332 Value ($000) $11,310 Avg Close $193.99 Range $162.29 - $223.03

Q1 2021

Shares 50,719 Value ($000) $10,355 Avg Close $205.03 Range $173.09 - $228.84

Q4 2020

Shares 14,633 Value ($000) $3,013 Avg Close $181.94 Range $146.52 - $212.55

Q3 2020

Shares 44,410 Value ($000) $7,272 Avg Close $142.94 Range $120.12 - $159.97

Q2 2020

Shares 46,829 Value ($000) $6,026 Avg Close $117.64 Range $92.00 - $143.93

Q1 2020

Shares 43,499 Value ($000) $4,216 Avg Close $96.54 Range $78.41 - $109.94

Q4 2019

Shares 59,250 Value ($000) $5,482 Avg Close $84.01 Range $72.32 - $93.50

Q3 2019

Shares 21,264 Value ($000) $1,630 Avg Close $87.47 Range $75.80 - $99.25

Q2 2019

Shares 9,012 Value ($000) $774 Avg Close $68.16 Range $52.87 - $86.16

Q1 2019

Shares 4,627 Value ($000) $273 Avg Close $57.51 Range $49.07 - $63.41

Q4 2018

Shares 32,479 Value ($000) $1,713 Avg Close $58.65 Range $48.26 - $70.50

Q3 2018

Shares 30,884 Value ($000) $1,713 Avg Close $51.54 Range $45.00 - $58.99

Q2 2018

Shares 32,079 Value ($000) $1,509 Avg Close $41.16 Range $34.61 - $47.87

Q1 2018

Shares 33,903 Value ($000) $1,226 Avg Close $35.17 Range $29.56 - $37.82

Q4 2017

Shares 35,457 Value ($000) $1,287 Avg Close $36.20 Range $31.96 - $40.05

Q3 2017

Shares 25,032 Value ($000) $960 Avg Close $41.91 Range $35.73 - $46.12

Q2 2017

Shares 25,032 Value ($000) $1,038 Avg Close $38.00 Range $32.73 - $46.81

Q1 2017

Shares 37,036 Value ($000) $1,304 Avg Close $31.67 Range $28.48 - $35.61

Q4 2016

Shares 29,361 Value ($000) $945 Avg Close $30.93 Range $26.16 - $34.06

Q3 2016

Shares 57,582 Value ($000) $1,738 Avg Close $30.18 Range $25.93 - $33.79

Q2 2016

Shares 58,692 Value ($000) $1,607 Avg Close $25.57 Range $21.11 - $28.97

Q1 2016

Shares 11,649 Value ($000) $313 Avg Close $24.47 Range $20.07 - $28.85

Q4 2015

Shares 10,938 Value ($000) $309 Avg Close $28.84 Range $21.69 - $36.00

Q3 2015

Shares 10,551 Value ($000) $294 Avg Close $36.14 Range $27.25 - $42.22

Q2 2015

Shares 11,033 Value ($000) $456 Avg Close $36.64 Range $28.88 - $42.48

Q1 2015

Shares 13,218 Value ($000) $401 Avg Close $25.94 Range $19.53 - $34.15

Q4 2014

Shares 33,289 Value ($000) $659 Avg Close $22.36 Range $19.02 - $26.75

Q3 2014

Shares 33,573 Value ($000) $669 Avg Close $21.05 Range $18.23 - $24.68

Q2 2014

Shares 29,615 Value ($000) $675 Avg Close $17.80 Range $12.60 - $23.14

Q1 2014

Shares 47,063 Value ($000) $605 Avg Close $14.34 Range $11.70 - $17.26

Q4 2013

Shares 36,433 Value ($000) $497 Avg Close $11.94 Range $9.89 - $14.05

Q3 2013

Shares 41,500 Value ($000) $460 Avg Close $9.95 Range $8.25 - $11.44

Q2 2013

Shares 40,176 Value ($000) $331 Avg Close $8.40 Range $6.65 - $9.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,460	$3,025	$156.63	$134.19 - $174.01
Q3 2025	22,704	$3,035	$121.47	$110.77 - $135.57
Q2 2025	34,606	$4,304	$127.25	$102.97 - $148.94
Q1 2025	32,982	$4,197	$153.93	$125.39 - $182.52
Q4 2024	35,989	$5,180	$143.40	$121.52 - $161.24
Q3 2024	49,568	$7,233	$143.39	$117.63 - $172.65
Q2 2024	36,752	$4,641	$156.74	$113.50 - $184.98
Q1 2024	35,177	$6,510	$190.44	$167.40 - $211.13
Q4 2023	43,313	$8,122	$155.67	$110.45 - $188.31
Q3 2023	46,647	$7,780	$163.47	$134.64 - $181.26
Q2 2023	175,342	$27,937	$160.35	$135.37 - $182.42
Q1 2023	230,505	$39,739	$178.42	$147.53 - $200.98
Q4 2022	27,986	$4,787	$181.39	$158.58 - $225.62
Q3 2022	25,535	$5,557	$210.87	$157.33 - $262.26
Q2 2022	36,230	$6,083	$158.16	$137.21 - $190.59
Q1 2022	36,725	$6,930	$189.96	$156.28 - $265.78
Q4 2021	28,523	$7,458	$269.41	$243.29 - $306.98
Q3 2021	40,251	$11,535	$256.54	$193.03 - $327.32
Q2 2021	55,332	$11,310	$193.99	$162.29 - $223.03
Q1 2021	50,719	$10,355	$205.03	$173.09 - $228.84
Q4 2020	14,633	$3,013	$181.94	$146.52 - $212.55
Q3 2020	44,410	$7,272	$142.94	$120.12 - $159.97
Q2 2020	46,829	$6,026	$117.64	$92.00 - $143.93
Q1 2020	43,499	$4,216	$96.54	$78.41 - $109.94
Q4 2019	59,250	$5,482	$84.01	$72.32 - $93.50
Q3 2019	21,264	$1,630	$87.47	$75.80 - $99.25
Q2 2019	9,012	$774	$68.16	$52.87 - $86.16
Q1 2019	4,627	$273	$57.51	$49.07 - $63.41
Q4 2018	32,479	$1,713	$58.65	$48.26 - $70.50
Q3 2018	30,884	$1,713	$51.54	$45.00 - $58.99
Q2 2018	32,079	$1,509	$41.16	$34.61 - $47.87
Q1 2018	33,903	$1,226	$35.17	$29.56 - $37.82
Q4 2017	35,457	$1,287	$36.20	$31.96 - $40.05
Q3 2017	25,032	$960	$41.91	$35.73 - $46.12
Q2 2017	25,032	$1,038	$38.00	$32.73 - $46.81
Q1 2017	37,036	$1,304	$31.67	$28.48 - $35.61
Q4 2016	29,361	$945	$30.93	$26.16 - $34.06
Q3 2016	57,582	$1,738	$30.18	$25.93 - $33.79
Q2 2016	58,692	$1,607	$25.57	$21.11 - $28.97
Q1 2016	11,649	$313	$24.47	$20.07 - $28.85
Q4 2015	10,938	$309	$28.84	$21.69 - $36.00
Q3 2015	10,551	$294	$36.14	$27.25 - $42.22
Q2 2015	11,033	$456	$36.64	$28.88 - $42.48
Q1 2015	13,218	$401	$25.94	$19.53 - $34.15
Q4 2014	33,289	$659	$22.36	$19.02 - $26.75
Q3 2014	33,573	$669	$21.05	$18.23 - $24.68
Q2 2014	29,615	$675	$17.80	$12.60 - $23.14
Q1 2014	47,063	$605	$14.34	$11.70 - $17.26
Q4 2013	36,433	$497	$11.94	$9.89 - $14.05
Q3 2013	41,500	$460	$9.95	$8.25 - $11.44
Q2 2013	40,176	$331	$8.40	$6.65 - $9.65