REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q4 2025

Shares 994,869 Value ($000) $163,019 Avg Close $156.63 Range $134.19 - $174.01

Q3 2025

Shares 1,104,171 Value ($000) $147,595 Avg Close $121.47 Range $110.77 - $135.57

Q2 2025

Shares 906,393 Value ($000) $112,737 Avg Close $127.25 Range $102.97 - $148.94

Q1 2025

Shares 1,024,180 Value ($000) $130,317 Avg Close $153.93 Range $125.39 - $182.52

Q4 2024

Shares 1,010,896 Value ($000) $145,508 Avg Close $143.40 Range $121.52 - $161.24

Q3 2024

Shares 819,457 Value ($000) $121,952 Avg Close $143.39 Range $117.63 - $172.65

Q2 2024

Shares 823,744 Value ($000) $103,841 Avg Close $156.74 Range $113.50 - $184.98

Q1 2024

Shares 843,746 Value ($000) $155,182 Avg Close $190.44 Range $167.40 - $211.13

Q4 2023

Shares 777,025 Value ($000) $139,709 Avg Close $155.67 Range $110.45 - $188.31

Q3 2023

Shares 785,107 Value ($000) $124,840 Avg Close $163.47 Range $134.64 - $181.26

Q2 2023

Shares 767,567 Value ($000) $108,580 Avg Close $160.35 Range $135.37 - $182.42

Q1 2023

Shares 872,534 Value ($000) $146,900 Avg Close $178.42 Range $147.53 - $200.98

Q4 2022

Shares 1,079,105 Value ($000) $182,703 Avg Close $181.39 Range $158.58 - $225.62

Q3 2022

Shares 811,669 Value ($000) $151,871 Avg Close $210.87 Range $157.33 - $262.26

Q2 2022

Shares 1,160,484 Value ($000) $188,463 Avg Close $158.16 Range $137.21 - $190.59

Q1 2022

Shares 1,283,585 Value ($000) $241,430 Avg Close $189.96 Range $156.28 - $265.78

Q4 2021

Shares 1,042,199 Value ($000) $276,016 Avg Close $269.41 Range $243.29 - $306.98

Q3 2021

Shares 1,139,518 Value ($000) $329,309 Avg Close $256.54 Range $193.03 - $327.32

Q2 2021

Shares 1,266,630 Value ($000) $252,845 Avg Close $193.99 Range $162.29 - $223.03

Q1 2021

Shares 1,122,006 Value ($000) $218,129 Avg Close $205.03 Range $173.09 - $228.84

Q4 2020

Shares 1,085,527 Value ($000) $208,020 Avg Close $181.94 Range $146.52 - $212.55

Q3 2020

Shares 1,130,873 Value ($000) $166,849 Avg Close $142.94 Range $120.12 - $159.97

Q2 2020

Shares 1,364,041 Value ($000) $168,609 Avg Close $117.64 Range $92.00 - $143.93

Q1 2020

Shares 981,043 Value ($000) $94,710 Avg Close $96.54 Range $78.41 - $109.94

Q4 2019

Shares 164,221 Value ($000) $15,190 Avg Close $84.01 Range $72.32 - $93.50

Q3 2019

Shares 155,071 Value ($000) $11,892 Avg Close $87.47 Range $75.80 - $99.25

Q2 2019

Shares 116,931 Value ($000) $10,050 Avg Close $68.16 Range $52.87 - $86.16

Q1 2019

Shares 93,241 Value ($000) $5,509 Avg Close $57.51 Range $49.07 - $63.41

Q4 2018

Shares 98,541 Value ($000) $5,197 Avg Close $58.65 Range $48.26 - $70.50

Q3 2018

Shares 62,330 Value ($000) $3,457 Avg Close $51.54 Range $45.00 - $58.99

Q2 2018

Shares 62,330 Value ($000) $2,932 Avg Close $41.16 Range $34.61 - $47.87

Q1 2018

Shares 54,030 Value ($000) $1,955 Avg Close $35.17 Range $29.56 - $37.82

Q4 2017

Shares 52,130 Value ($000) $1,891 Avg Close $36.20 Range $31.96 - $40.05

Q3 2017

Shares 52,130 Value ($000) $1,998 Avg Close $41.91 Range $35.73 - $46.12

Q2 2017

Shares 77,460 Value ($000) $3,210 Avg Close $38.00 Range $32.73 - $46.81

Q1 2017

Shares 51,230 Value ($000) $1,803 Avg Close $31.67 Range $28.48 - $35.61

Q4 2016

Shares 108,000 Value ($000) $3,329 Avg Close $30.93 Range $26.16 - $34.06

Q3 2016

Shares 134,160 Value ($000) $4,050 Avg Close $30.18 Range $25.93 - $33.79

Q2 2016

Shares 95,980 Value ($000) $2,626 Avg Close $25.57 Range $21.11 - $28.97

Q1 2016

Shares 66,190 Value ($000) $1,775 Avg Close $24.47 Range $20.07 - $28.85

Q4 2015

Shares 55,460 Value ($000) $1,569 Avg Close $28.84 Range $21.69 - $36.00

Q3 2015

Shares 55,230 Value ($000) $1,538 Avg Close $36.14 Range $27.25 - $42.22

Q2 2015

Shares 55,300 Value ($000) $2,282 Avg Close $36.64 Range $28.88 - $42.48

Q1 2015

Shares 50,900 Value ($000) $1,545 Avg Close $25.94 Range $19.53 - $34.15

Q4 2014

Shares 50,900 Value ($000) $1,008 Avg Close $22.36 Range $19.02 - $26.75

Q3 2014

Shares 50,900 Value ($000) $1,013 Avg Close $21.05 Range $18.23 - $24.68

Q2 2014

Shares 50,900 Value ($000) $1,160 Avg Close $17.80 Range $12.60 - $23.14

Q1 2014

Shares 19,500 Value ($000) $251 Avg Close $14.34 Range $11.70 - $17.26

Q4 2013

Shares 2,600 Value ($000) $35 Avg Close $11.94 Range $9.89 - $14.05

Q3 2013

Shares 7,000 Value ($000) $78 Avg Close $9.95 Range $8.25 - $11.44

Q2 2013

Shares 9,773 Value ($000) $81 Avg Close $8.40 Range $6.65 - $9.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	994,869	$163,019	$156.63	$134.19 - $174.01
Q3 2025	1,104,171	$147,595	$121.47	$110.77 - $135.57
Q2 2025	906,393	$112,737	$127.25	$102.97 - $148.94
Q1 2025	1,024,180	$130,317	$153.93	$125.39 - $182.52
Q4 2024	1,010,896	$145,508	$143.40	$121.52 - $161.24
Q3 2024	819,457	$121,952	$143.39	$117.63 - $172.65
Q2 2024	823,744	$103,841	$156.74	$113.50 - $184.98
Q1 2024	843,746	$155,182	$190.44	$167.40 - $211.13
Q4 2023	777,025	$139,709	$155.67	$110.45 - $188.31
Q3 2023	785,107	$124,840	$163.47	$134.64 - $181.26
Q2 2023	767,567	$108,580	$160.35	$135.37 - $182.42
Q1 2023	872,534	$146,900	$178.42	$147.53 - $200.98
Q4 2022	1,079,105	$182,703	$181.39	$158.58 - $225.62
Q3 2022	811,669	$151,871	$210.87	$157.33 - $262.26
Q2 2022	1,160,484	$188,463	$158.16	$137.21 - $190.59
Q1 2022	1,283,585	$241,430	$189.96	$156.28 - $265.78
Q4 2021	1,042,199	$276,016	$269.41	$243.29 - $306.98
Q3 2021	1,139,518	$329,309	$256.54	$193.03 - $327.32
Q2 2021	1,266,630	$252,845	$193.99	$162.29 - $223.03
Q1 2021	1,122,006	$218,129	$205.03	$173.09 - $228.84
Q4 2020	1,085,527	$208,020	$181.94	$146.52 - $212.55
Q3 2020	1,130,873	$166,849	$142.94	$120.12 - $159.97
Q2 2020	1,364,041	$168,609	$117.64	$92.00 - $143.93
Q1 2020	981,043	$94,710	$96.54	$78.41 - $109.94
Q4 2019	164,221	$15,190	$84.01	$72.32 - $93.50
Q3 2019	155,071	$11,892	$87.47	$75.80 - $99.25
Q2 2019	116,931	$10,050	$68.16	$52.87 - $86.16
Q1 2019	93,241	$5,509	$57.51	$49.07 - $63.41
Q4 2018	98,541	$5,197	$58.65	$48.26 - $70.50
Q3 2018	62,330	$3,457	$51.54	$45.00 - $58.99
Q2 2018	62,330	$2,932	$41.16	$34.61 - $47.87
Q1 2018	54,030	$1,955	$35.17	$29.56 - $37.82
Q4 2017	52,130	$1,891	$36.20	$31.96 - $40.05
Q3 2017	52,130	$1,998	$41.91	$35.73 - $46.12
Q2 2017	77,460	$3,210	$38.00	$32.73 - $46.81
Q1 2017	51,230	$1,803	$31.67	$28.48 - $35.61
Q4 2016	108,000	$3,329	$30.93	$26.16 - $34.06
Q3 2016	134,160	$4,050	$30.18	$25.93 - $33.79
Q2 2016	95,980	$2,626	$25.57	$21.11 - $28.97
Q1 2016	66,190	$1,775	$24.47	$20.07 - $28.85
Q4 2015	55,460	$1,569	$28.84	$21.69 - $36.00
Q3 2015	55,230	$1,538	$36.14	$27.25 - $42.22
Q2 2015	55,300	$2,282	$36.64	$28.88 - $42.48
Q1 2015	50,900	$1,545	$25.94	$19.53 - $34.15
Q4 2014	50,900	$1,008	$22.36	$19.02 - $26.75
Q3 2014	50,900	$1,013	$21.05	$18.23 - $24.68
Q2 2014	50,900	$1,160	$17.80	$12.60 - $23.14
Q1 2014	19,500	$251	$14.34	$11.70 - $17.26
Q4 2013	2,600	$35	$11.94	$9.89 - $14.05
Q3 2013	7,000	$78	$9.95	$8.25 - $11.44
Q2 2013	9,773	$81	$8.40	$6.65 - $9.65