REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q4 2025

Shares 778,001 Value ($000) $600,516 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 755,565 Value ($000) $424,832 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 720,273 Value ($000) $378,143 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 706,440 Value ($000) $448,045 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 695,799 Value ($000) $495,639 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 673,261 Value ($000) $707,759 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 661,762 Value ($000) $695,532 Avg Close $964.05 Range $870.40 - $1075.21

Q1 2024

Shares 638,223 Value ($000) $614,284 Avg Close $945.64 Range $866.58 - $992.82

Q4 2023

Shares 620,616 Value ($000) $545,081 Avg Close $818.96 Range $764.95 - $894.90

Q3 2023

Shares 598,058 Value ($000) $492,178 Avg Close $781.58 Range $684.72 - $842.83

Q2 2023

Shares 600,036 Value ($000) $431,150 Avg Close $766.75 Range $681.03 - $832.93

Q1 2023

Shares 595,604 Value ($000) $489,390 Avg Close $750.05 Range $664.32 - $830.39

Q4 2022

Shares 586,943 Value ($000) $423,474 Avg Close $733.79 Range $690.81 - $774.70

Q3 2022

Shares 573,003 Value ($000) $394,725 Avg Close $625.92 Range $560.71 - $750.51

Q2 2022

Shares 570,462 Value ($000) $337,217 Avg Close $646.43 Range $535.04 - $743.30

Q1 2022

Shares 562,136 Value ($000) $392,607 Avg Close $629.16 Range $589.59 - $706.29

Q4 2021

Shares 556,294 Value ($000) $351,311 Avg Close $611.44 Range $536.21 - $670.14

Q3 2021

Shares 529,528 Value ($000) $320,460 Avg Close $617.39 Range $551.89 - $682.83

Q2 2021

Shares 504,883 Value ($000) $281,998 Avg Close $503.83 Range $466.78 - $566.85

Q1 2021

Shares 499,790 Value ($000) $236,471 Avg Close $484.19 Range $438.57 - $555.83

Q4 2020

Shares 516,149 Value ($000) $249,357 Avg Close $536.82 Range $468.18 - $616.55

Q3 2020

Shares 510,164 Value ($000) $285,580 Avg Close $602.99 Range $537.02 - $660.97

Q2 2020

Shares 471,523 Value ($000) $294,066 Avg Close $564.49 Range $473.82 - $642.77

Q1 2020

Shares 357,097 Value ($000) $174,367 Avg Close $410.21 Range $326.32 - $515.14

Q4 2019

Shares 356,916 Value ($000) $134,015 Avg Close $334.59 Range $270.76 - $380.14

Q3 2019

Shares 369,700 Value ($000) $102,555 Avg Close $294.28 Range $269.87 - $318.99

Q2 2019

Shares 393,868 Value ($000) $123,281 Avg Close $331.08 Range $293.64 - $413.60

Q1 2019

Shares 369,328 Value ($000) $151,654 Avg Close $409.51 Range $363.99 - $439.56

Q4 2018

Shares 296,740 Value ($000) $110,833 Avg Close $364.00 Range $325.77 - $407.74

Q3 2018

Shares 286,974 Value ($000) $115,949 Avg Close $378.49 Range $340.69 - $414.19

Q2 2018

Shares 286,459 Value ($000) $98,826 Avg Close $311.03 Range $280.34 - $347.31

Q1 2018

Shares 297,077 Value ($000) $102,302 Avg Close $345.90 Range $311.80 - $394.59

Q4 2017

Shares 284,567 Value ($000) $106,986 Avg Close $402.77 Range $351.19 - $474.37

Q3 2017

Shares 268,643 Value ($000) $120,116 Avg Close $473.21 Range $424.12 - $523.22

Q2 2017

Shares 245,110 Value ($000) $120,384 Avg Close $435.19 Range $358.01 - $540.55

Q1 2017

Shares 230,149 Value ($000) $89,186 Avg Close $368.62 Range $338.21 - $399.00

Q4 2016

Shares 217,704 Value ($000) $79,917 Avg Close $378.17 Range $323.56 - $450.46

Q3 2016

Shares 208,591 Value ($000) $83,858 Avg Close $398.92 Range $346.51 - $441.54

Q2 2016

Shares 209,210 Value ($000) $73,063 Avg Close $383.00 Range $327.27 - $431.54

Q1 2016

Shares 205,469 Value ($000) $74,060 Avg Close $409.79 Range $347.04 - $529.97

Q4 2015

Shares 218,216 Value ($000) $118,463 Avg Close $538.82 Range $445.63 - $589.32

Q3 2015

Shares 186,775 Value ($000) $86,877 Avg Close $534.07 Range $433.12 - $602.59

Q2 2015

Shares 177,612 Value ($000) $90,606 Avg Close $485.93 Range $431.08 - $541.00

Q1 2015

Shares 169,690 Value ($000) $76,612 Avg Close $421.46 Range $390.83 - $492.77

Q4 2014

Shares 163,309 Value ($000) $66,998 Avg Close $391.09 Range $318.29 - $435.23

Q3 2014

Shares 157,573 Value ($000) $56,809 Avg Close $333.32 Range $283.49 - $367.27

Q2 2014

Shares 164,342 Value ($000) $46,422 Avg Close $294.74 Range $268.01 - $318.24

Q1 2014

Shares 155,526 Value ($000) $46,702 Avg Close $306.39 Range $261.52 - $350.55

Q4 2013

Shares 151,684 Value ($000) $41,750 Avg Close $286.03 Range $256.27 - $317.74

Q3 2013

Shares 147,807 Value ($000) $46,815 Avg Close $261.58 Range $224.53 - $318.07

Q2 2013

Shares 139,066 Value ($000) $32,005 Avg Close $231.58 Range $176.14 - $282.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	778,001	$600,516	$678.68	$540.32 - $792.77
Q3 2025	755,565	$424,832	$564.28	$519.56 - $609.69
Q2 2025	720,273	$378,143	$556.12	$475.17 - $638.52
Q1 2025	706,440	$448,045	$684.44	$615.89 - $745.12
Q4 2024	695,799	$495,639	$834.60	$689.18 - $1055.74
Q3 2024	673,261	$707,759	$1106.73	$1002.85 - $1204.52
Q2 2024	661,762	$695,532	$964.05	$870.40 - $1075.21
Q1 2024	638,223	$614,284	$945.64	$866.58 - $992.82
Q4 2023	620,616	$545,081	$818.96	$764.95 - $894.90
Q3 2023	598,058	$492,178	$781.58	$684.72 - $842.83
Q2 2023	600,036	$431,150	$766.75	$681.03 - $832.93
Q1 2023	595,604	$489,390	$750.05	$664.32 - $830.39
Q4 2022	586,943	$423,474	$733.79	$690.81 - $774.70
Q3 2022	573,003	$394,725	$625.92	$560.71 - $750.51
Q2 2022	570,462	$337,217	$646.43	$535.04 - $743.30
Q1 2022	562,136	$392,607	$629.16	$589.59 - $706.29
Q4 2021	556,294	$351,311	$611.44	$536.21 - $670.14
Q3 2021	529,528	$320,460	$617.39	$551.89 - $682.83
Q2 2021	504,883	$281,998	$503.83	$466.78 - $566.85
Q1 2021	499,790	$236,471	$484.19	$438.57 - $555.83
Q4 2020	516,149	$249,357	$536.82	$468.18 - $616.55
Q3 2020	510,164	$285,580	$602.99	$537.02 - $660.97
Q2 2020	471,523	$294,066	$564.49	$473.82 - $642.77
Q1 2020	357,097	$174,367	$410.21	$326.32 - $515.14
Q4 2019	356,916	$134,015	$334.59	$270.76 - $380.14
Q3 2019	369,700	$102,555	$294.28	$269.87 - $318.99
Q2 2019	393,868	$123,281	$331.08	$293.64 - $413.60
Q1 2019	369,328	$151,654	$409.51	$363.99 - $439.56
Q4 2018	296,740	$110,833	$364.00	$325.77 - $407.74
Q3 2018	286,974	$115,949	$378.49	$340.69 - $414.19
Q2 2018	286,459	$98,826	$311.03	$280.34 - $347.31
Q1 2018	297,077	$102,302	$345.90	$311.80 - $394.59
Q4 2017	284,567	$106,986	$402.77	$351.19 - $474.37
Q3 2017	268,643	$120,116	$473.21	$424.12 - $523.22
Q2 2017	245,110	$120,384	$435.19	$358.01 - $540.55
Q1 2017	230,149	$89,186	$368.62	$338.21 - $399.00
Q4 2016	217,704	$79,917	$378.17	$323.56 - $450.46
Q3 2016	208,591	$83,858	$398.92	$346.51 - $441.54
Q2 2016	209,210	$73,063	$383.00	$327.27 - $431.54
Q1 2016	205,469	$74,060	$409.79	$347.04 - $529.97
Q4 2015	218,216	$118,463	$538.82	$445.63 - $589.32
Q3 2015	186,775	$86,877	$534.07	$433.12 - $602.59
Q2 2015	177,612	$90,606	$485.93	$431.08 - $541.00
Q1 2015	169,690	$76,612	$421.46	$390.83 - $492.77
Q4 2014	163,309	$66,998	$391.09	$318.29 - $435.23
Q3 2014	157,573	$56,809	$333.32	$283.49 - $367.27
Q2 2014	164,342	$46,422	$294.74	$268.01 - $318.24
Q1 2014	155,526	$46,702	$306.39	$261.52 - $350.55
Q4 2013	151,684	$41,750	$286.03	$256.27 - $317.74
Q3 2013	147,807	$46,815	$261.58	$224.53 - $318.07
Q2 2013	139,066	$32,005	$231.58	$176.14 - $282.42