REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q4 2025

Shares 446,148 Value ($000) $73,106 Avg Close $156.63 Range $134.19 - $174.01

Q3 2025

Shares 464,126 Value ($000) $62,040 Avg Close $121.47 Range $110.77 - $135.57

Q2 2025

Shares 469,822 Value ($000) $58,436 Avg Close $127.25 Range $102.97 - $148.94

Q1 2025

Shares 498,447 Value ($000) $63,422 Avg Close $153.93 Range $125.39 - $182.52

Q4 2024

Shares 493,713 Value ($000) $71,065 Avg Close $143.40 Range $121.52 - $161.24

Q3 2024

Shares 391,702 Value ($000) $58,293 Avg Close $143.39 Range $117.63 - $172.65

Q2 2024

Shares 449,279 Value ($000) $56,636 Avg Close $156.74 Range $113.50 - $184.98

Q1 2024

Shares 393,615 Value ($000) $72,394 Avg Close $190.44 Range $167.40 - $211.13

Q4 2023

Shares 447,438 Value ($000) $80,449 Avg Close $155.67 Range $110.45 - $188.31

Q3 2023

Shares 471,919 Value ($000) $75,040 Avg Close $163.47 Range $134.64 - $181.26

Q2 2023

Shares 460,715 Value ($000) $65,173 Avg Close $160.35 Range $135.37 - $182.42

Q1 2023

Shares 455,690 Value ($000) $76,720 Avg Close $178.42 Range $147.53 - $200.98

Q4 2022

Shares 452,289 Value ($000) $76,577 Avg Close $181.39 Range $158.58 - $225.62

Q3 2022

Shares 399,578 Value ($000) $74,765 Avg Close $210.87 Range $157.33 - $262.26

Q2 2022

Shares 400,946 Value ($000) $65,114 Avg Close $158.16 Range $137.21 - $190.59

Q1 2022

Shares 415,330 Value ($000) $78,119 Avg Close $189.96 Range $156.28 - $265.78

Q4 2021

Shares 423,861 Value ($000) $112,255 Avg Close $269.41 Range $243.29 - $306.98

Q3 2021

Shares 430,035 Value ($000) $124,276 Avg Close $256.54 Range $193.03 - $327.32

Q2 2021

Shares 439,140 Value ($000) $87,661 Avg Close $193.99 Range $162.29 - $223.03

Q1 2021

Shares 447,905 Value ($000) $87,076 Avg Close $205.03 Range $173.09 - $228.84

Q4 2020

Shares 411,373 Value ($000) $78,832 Avg Close $181.94 Range $146.52 - $212.55

Q3 2020

Shares 410,209 Value ($000) $60,521 Avg Close $142.94 Range $120.12 - $159.97

Q2 2020

Shares 416,519 Value ($000) $51,486 Avg Close $117.64 Range $92.00 - $143.93

Q1 2020

Shares 832,363 Value ($000) $80,356 Avg Close $96.54 Range $78.41 - $109.94

Q4 2019

Shares 828,116 Value ($000) $76,600 Avg Close $84.01 Range $72.32 - $93.50

Q3 2019

Shares 831,652 Value ($000) $63,779 Avg Close $87.47 Range $75.80 - $99.25

Q2 2019

Shares 564,481 Value ($000) $48,517 Avg Close $68.16 Range $52.87 - $86.16

Q1 2019

Shares 542,473 Value ($000) $32,050 Avg Close $57.51 Range $49.07 - $63.41

Q4 2018

Shares 542,528 Value ($000) $28,613 Avg Close $58.65 Range $48.26 - $70.50

Q3 2018

Shares 553,995 Value ($000) $30,724 Avg Close $51.54 Range $45.00 - $58.99

Q2 2018

Shares 543,817 Value ($000) $25,581 Avg Close $41.16 Range $34.61 - $47.87

Q1 2018

Shares 516,755 Value ($000) $18,695 Avg Close $35.17 Range $29.56 - $37.82

Q4 2017

Shares 512,581 Value ($000) $18,597 Avg Close $36.20 Range $31.96 - $40.05

Q3 2017

Shares 516,700 Value ($000) $19,800 Avg Close $41.91 Range $35.73 - $46.12

Q2 2017

Shares 493,885 Value ($000) $20,467 Avg Close $38.00 Range $32.73 - $46.81

Q1 2017

Shares 481,086 Value ($000) $16,933 Avg Close $31.67 Range $28.48 - $35.61

Q4 2016

Shares 479,244 Value ($000) $14,769 Avg Close $30.93 Range $26.16 - $34.06

Q3 2016

Shares 537,595 Value ($000) $16,230 Avg Close $30.18 Range $25.93 - $33.79

Q2 2016

Shares 487,262 Value ($000) $13,331 Avg Close $25.57 Range $21.11 - $28.97

Q1 2016

Shares 471,572 Value ($000) $12,690 Avg Close $24.47 Range $20.07 - $28.85

Q4 2015

Shares 457,900 Value ($000) $12,955 Avg Close $28.84 Range $21.69 - $36.00

Q3 2015

Shares 455,860 Value ($000) $12,695 Avg Close $36.14 Range $27.25 - $42.22

Q2 2015

Shares 381,239 Value ($000) $15,734 Avg Close $36.64 Range $28.88 - $42.48

Q1 2015

Shares 433,408 Value ($000) $13,158 Avg Close $25.94 Range $19.53 - $34.15

Q4 2014

Shares 390,846 Value ($000) $7,739 Avg Close $22.36 Range $19.02 - $26.75

Q3 2014

Shares 394,159 Value ($000) $7,848 Avg Close $21.05 Range $18.23 - $24.68

Q2 2014

Shares 394,813 Value ($000) $8,998 Avg Close $17.80 Range $12.60 - $23.14

Q1 2014

Shares 434,954 Value ($000) $5,594 Avg Close $14.34 Range $11.70 - $17.26

Q4 2013

Shares 466,285 Value ($000) $6,360 Avg Close $11.94 Range $9.89 - $14.05

Q3 2013

Shares 458,177 Value ($000) $5,081 Avg Close $9.95 Range $8.25 - $11.44

Q2 2013

Shares 458,507 Value ($000) $3,779 Avg Close $8.40 Range $6.65 - $9.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	446,148	$73,106	$156.63	$134.19 - $174.01
Q3 2025	464,126	$62,040	$121.47	$110.77 - $135.57
Q2 2025	469,822	$58,436	$127.25	$102.97 - $148.94
Q1 2025	498,447	$63,422	$153.93	$125.39 - $182.52
Q4 2024	493,713	$71,065	$143.40	$121.52 - $161.24
Q3 2024	391,702	$58,293	$143.39	$117.63 - $172.65
Q2 2024	449,279	$56,636	$156.74	$113.50 - $184.98
Q1 2024	393,615	$72,394	$190.44	$167.40 - $211.13
Q4 2023	447,438	$80,449	$155.67	$110.45 - $188.31
Q3 2023	471,919	$75,040	$163.47	$134.64 - $181.26
Q2 2023	460,715	$65,173	$160.35	$135.37 - $182.42
Q1 2023	455,690	$76,720	$178.42	$147.53 - $200.98
Q4 2022	452,289	$76,577	$181.39	$158.58 - $225.62
Q3 2022	399,578	$74,765	$210.87	$157.33 - $262.26
Q2 2022	400,946	$65,114	$158.16	$137.21 - $190.59
Q1 2022	415,330	$78,119	$189.96	$156.28 - $265.78
Q4 2021	423,861	$112,255	$269.41	$243.29 - $306.98
Q3 2021	430,035	$124,276	$256.54	$193.03 - $327.32
Q2 2021	439,140	$87,661	$193.99	$162.29 - $223.03
Q1 2021	447,905	$87,076	$205.03	$173.09 - $228.84
Q4 2020	411,373	$78,832	$181.94	$146.52 - $212.55
Q3 2020	410,209	$60,521	$142.94	$120.12 - $159.97
Q2 2020	416,519	$51,486	$117.64	$92.00 - $143.93
Q1 2020	832,363	$80,356	$96.54	$78.41 - $109.94
Q4 2019	828,116	$76,600	$84.01	$72.32 - $93.50
Q3 2019	831,652	$63,779	$87.47	$75.80 - $99.25
Q2 2019	564,481	$48,517	$68.16	$52.87 - $86.16
Q1 2019	542,473	$32,050	$57.51	$49.07 - $63.41
Q4 2018	542,528	$28,613	$58.65	$48.26 - $70.50
Q3 2018	553,995	$30,724	$51.54	$45.00 - $58.99
Q2 2018	543,817	$25,581	$41.16	$34.61 - $47.87
Q1 2018	516,755	$18,695	$35.17	$29.56 - $37.82
Q4 2017	512,581	$18,597	$36.20	$31.96 - $40.05
Q3 2017	516,700	$19,800	$41.91	$35.73 - $46.12
Q2 2017	493,885	$20,467	$38.00	$32.73 - $46.81
Q1 2017	481,086	$16,933	$31.67	$28.48 - $35.61
Q4 2016	479,244	$14,769	$30.93	$26.16 - $34.06
Q3 2016	537,595	$16,230	$30.18	$25.93 - $33.79
Q2 2016	487,262	$13,331	$25.57	$21.11 - $28.97
Q1 2016	471,572	$12,690	$24.47	$20.07 - $28.85
Q4 2015	457,900	$12,955	$28.84	$21.69 - $36.00
Q3 2015	455,860	$12,695	$36.14	$27.25 - $42.22
Q2 2015	381,239	$15,734	$36.64	$28.88 - $42.48
Q1 2015	433,408	$13,158	$25.94	$19.53 - $34.15
Q4 2014	390,846	$7,739	$22.36	$19.02 - $26.75
Q3 2014	394,159	$7,848	$21.05	$18.23 - $24.68
Q2 2014	394,813	$8,998	$17.80	$12.60 - $23.14
Q1 2014	434,954	$5,594	$14.34	$11.70 - $17.26
Q4 2013	466,285	$6,360	$11.94	$9.89 - $14.05
Q3 2013	458,177	$5,081	$9.95	$8.25 - $11.44
Q2 2013	458,507	$3,779	$8.40	$6.65 - $9.65