REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2025

Shares 551,487 Value ($000) $425,680 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 660,595 Value ($000) $371,436 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 636,652 Value ($000) $334,245 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 722,467 Value ($000) $458,211 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 707,546 Value ($000) $504,007 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 738,495 Value ($000) $776,336 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 825,832 Value ($000) $867,975 Avg Close $964.05 Range $870.40 - $1075.21

Q1 2024

Shares 881,905 Value ($000) $848,826 Avg Close $945.64 Range $866.58 - $992.82

Q4 2023

Shares 931,328 Value ($000) $817,977 Avg Close $818.96 Range $764.95 - $894.90

Q3 2023

Shares 916,718 Value ($000) $754,422 Avg Close $781.58 Range $684.72 - $842.83

Q2 2023

Shares 886,668 Value ($000) $637,106 Avg Close $766.75 Range $681.03 - $832.93

Q1 2023

Shares 961,710 Value ($000) $783,252 Avg Close $750.05 Range $664.32 - $830.39

Q4 2022

Shares 1,102,002 Value ($000) $795,083 Avg Close $733.79 Range $690.81 - $774.70

Q3 2022

Shares 1,178,071 Value ($000) $811,537 Avg Close $625.92 Range $560.71 - $750.51

Q2 2022

Shares 1,176,726 Value ($000) $695,598 Avg Close $646.43 Range $535.04 - $743.30

Q1 2022

Shares 1,102,306 Value ($000) $769,872 Avg Close $629.16 Range $589.59 - $706.29

Q4 2021

Shares 1,064,936 Value ($000) $672,529 Avg Close $611.44 Range $536.21 - $670.14

Q3 2021

Shares 1,174,664 Value ($000) $710,883 Avg Close $617.39 Range $551.89 - $682.83

Q2 2021

Shares 1,155,073 Value ($000) $645,154 Avg Close $503.83 Range $466.78 - $566.85

Q1 2021

Shares 1,104,761 Value ($000) $522,706 Avg Close $484.19 Range $438.57 - $555.83

Q4 2020

Shares 926,036 Value ($000) $447,377 Avg Close $536.82 Range $468.18 - $616.55

Q3 2020

Shares 929,804 Value ($000) $520,486 Avg Close $602.99 Range $537.02 - $660.97

Q2 2020

Shares 898,471 Value ($000) $560,331 Avg Close $564.49 Range $473.82 - $642.77

Q1 2020

Shares 972,763 Value ($000) $474,991 Avg Close $410.21 Range $326.32 - $515.14

Q4 2019

Shares 1,009,435 Value ($000) $379,023 Avg Close $334.59 Range $270.76 - $380.14

Q3 2019

Shares 943,920 Value ($000) $261,843 Avg Close $294.28 Range $269.87 - $318.99

Q2 2019

Shares 1,032,014 Value ($000) $323,020 Avg Close $331.08 Range $293.64 - $413.60

Q1 2019

Shares 1,041,044 Value ($000) $427,473 Avg Close $409.51 Range $363.99 - $439.56

Q4 2018

Shares 1,003,471 Value ($000) $374,796 Avg Close $364.00 Range $325.77 - $407.74

Q3 2018

Shares 860,692 Value ($000) $347,754 Avg Close $378.49 Range $340.69 - $414.19

Q2 2018

Shares 912,128 Value ($000) $314,675 Avg Close $311.03 Range $280.34 - $347.31

Q1 2018

Shares 957,189 Value ($000) $329,618 Avg Close $345.90 Range $311.80 - $394.59

Q4 2017

Shares 877,587 Value ($000) $329,938 Avg Close $402.77 Range $351.19 - $474.37

Q3 2017

Shares 917,554 Value ($000) $410,257 Avg Close $473.21 Range $424.12 - $523.22

Q2 2017

Shares 897,336 Value ($000) $440,718 Avg Close $435.19 Range $358.01 - $540.55

Q1 2017

Shares 848,193 Value ($000) $328,683 Avg Close $368.62 Range $338.21 - $399.00

Q4 2016

Shares 677,498 Value ($000) $248,703 Avg Close $378.17 Range $323.56 - $450.46

Q3 2016

Shares 666,512 Value ($000) $267,951 Avg Close $398.92 Range $346.51 - $441.54

Q2 2016

Shares 602,167 Value ($000) $210,295 Avg Close $383.00 Range $327.27 - $431.54

Q1 2016

Shares 505,827 Value ($000) $182,320 Avg Close $409.79 Range $347.04 - $529.97

Q4 2015

Shares 496,882 Value ($000) $269,742 Avg Close $538.82 Range $445.63 - $589.32

Q3 2015

Shares 516,767 Value ($000) $240,369 Avg Close $534.07 Range $433.12 - $602.59

Q2 2015

Shares 601,889 Value ($000) $307,042 Avg Close $485.93 Range $431.08 - $541.00

Q1 2015

Shares 647,156 Value ($000) $292,178 Avg Close $421.46 Range $390.83 - $492.77

Q4 2014

Shares 737,713 Value ($000) $302,647 Avg Close $391.09 Range $318.29 - $435.23

Q3 2014

Shares 467,898 Value ($000) $168,687 Avg Close $333.32 Range $283.49 - $367.27

Q2 2014

Shares 601,250 Value ($000) $169,835 Avg Close $294.74 Range $268.01 - $318.24

Q1 2014

Shares 762,600 Value ($000) $228,994 Avg Close $306.39 Range $261.52 - $350.55

Q4 2013

Shares 987,174 Value ($000) $271,710 Avg Close $286.03 Range $256.27 - $317.74

Q3 2013

Shares 822,310 Value ($000) $257,276 Avg Close $261.58 Range $224.53 - $318.07

Q2 2013

Shares 800,624 Value ($000) $180,044 Avg Close $231.58 Range $176.14 - $282.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	551,487	$425,680	$678.68	$540.32 - $792.77
Q3 2025	660,595	$371,436	$564.28	$519.56 - $609.69
Q2 2025	636,652	$334,245	$556.12	$475.17 - $638.52
Q1 2025	722,467	$458,211	$684.44	$615.89 - $745.12
Q4 2024	707,546	$504,007	$834.60	$689.18 - $1055.74
Q3 2024	738,495	$776,336	$1106.73	$1002.85 - $1204.52
Q2 2024	825,832	$867,975	$964.05	$870.40 - $1075.21
Q1 2024	881,905	$848,826	$945.64	$866.58 - $992.82
Q4 2023	931,328	$817,977	$818.96	$764.95 - $894.90
Q3 2023	916,718	$754,422	$781.58	$684.72 - $842.83
Q2 2023	886,668	$637,106	$766.75	$681.03 - $832.93
Q1 2023	961,710	$783,252	$750.05	$664.32 - $830.39
Q4 2022	1,102,002	$795,083	$733.79	$690.81 - $774.70
Q3 2022	1,178,071	$811,537	$625.92	$560.71 - $750.51
Q2 2022	1,176,726	$695,598	$646.43	$535.04 - $743.30
Q1 2022	1,102,306	$769,872	$629.16	$589.59 - $706.29
Q4 2021	1,064,936	$672,529	$611.44	$536.21 - $670.14
Q3 2021	1,174,664	$710,883	$617.39	$551.89 - $682.83
Q2 2021	1,155,073	$645,154	$503.83	$466.78 - $566.85
Q1 2021	1,104,761	$522,706	$484.19	$438.57 - $555.83
Q4 2020	926,036	$447,377	$536.82	$468.18 - $616.55
Q3 2020	929,804	$520,486	$602.99	$537.02 - $660.97
Q2 2020	898,471	$560,331	$564.49	$473.82 - $642.77
Q1 2020	972,763	$474,991	$410.21	$326.32 - $515.14
Q4 2019	1,009,435	$379,023	$334.59	$270.76 - $380.14
Q3 2019	943,920	$261,843	$294.28	$269.87 - $318.99
Q2 2019	1,032,014	$323,020	$331.08	$293.64 - $413.60
Q1 2019	1,041,044	$427,473	$409.51	$363.99 - $439.56
Q4 2018	1,003,471	$374,796	$364.00	$325.77 - $407.74
Q3 2018	860,692	$347,754	$378.49	$340.69 - $414.19
Q2 2018	912,128	$314,675	$311.03	$280.34 - $347.31
Q1 2018	957,189	$329,618	$345.90	$311.80 - $394.59
Q4 2017	877,587	$329,938	$402.77	$351.19 - $474.37
Q3 2017	917,554	$410,257	$473.21	$424.12 - $523.22
Q2 2017	897,336	$440,718	$435.19	$358.01 - $540.55
Q1 2017	848,193	$328,683	$368.62	$338.21 - $399.00
Q4 2016	677,498	$248,703	$378.17	$323.56 - $450.46
Q3 2016	666,512	$267,951	$398.92	$346.51 - $441.54
Q2 2016	602,167	$210,295	$383.00	$327.27 - $431.54
Q1 2016	505,827	$182,320	$409.79	$347.04 - $529.97
Q4 2015	496,882	$269,742	$538.82	$445.63 - $589.32
Q3 2015	516,767	$240,369	$534.07	$433.12 - $602.59
Q2 2015	601,889	$307,042	$485.93	$431.08 - $541.00
Q1 2015	647,156	$292,178	$421.46	$390.83 - $492.77
Q4 2014	737,713	$302,647	$391.09	$318.29 - $435.23
Q3 2014	467,898	$168,687	$333.32	$283.49 - $367.27
Q2 2014	601,250	$169,835	$294.74	$268.01 - $318.24
Q1 2014	762,600	$228,994	$306.39	$261.52 - $350.55
Q4 2013	987,174	$271,710	$286.03	$256.27 - $317.74
Q3 2013	822,310	$257,276	$261.58	$224.53 - $318.07
Q2 2013	800,624	$180,044	$231.58	$176.14 - $282.42