REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q2 2025

Shares 20,202 Value ($000) $10,606 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 20,963 Value ($000) $13,295 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 15,234 Value ($000) $10,852 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 514,265 Value ($000) $540,616 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 540,293 Value ($000) $567,864 Avg Close $964.05 Range $870.40 - $1075.21

Q1 2024

Shares 480,524 Value ($000) $462,500 Avg Close $945.64 Range $866.58 - $992.82

Q4 2023

Shares 242,350 Value ($000) $212,854 Avg Close $818.96 Range $764.95 - $894.90

Q3 2023

Shares 235,471 Value ($000) $193,783 Avg Close $781.58 Range $684.72 - $842.83

Q2 2023

Shares 550,723 Value ($000) $395,717 Avg Close $766.75 Range $681.03 - $832.93

Q1 2023

Shares 551,526 Value ($000) $453,172 Avg Close $750.05 Range $664.32 - $830.39

Q4 2022

Shares 548,269 Value ($000) $395,571 Avg Close $733.79 Range $690.81 - $774.70

Q3 2022

Shares 198,409 Value ($000) $136,678 Avg Close $625.92 Range $560.71 - $750.51

Q2 2021

Shares 2,650 Value ($000) $1,480 Avg Close $503.83 Range $466.78 - $566.85

Q1 2021

Shares 10,718 Value ($000) $5,072 Avg Close $484.19 Range $438.57 - $555.83

Q4 2020

Shares 10,827 Value ($000) $5,230 Avg Close $536.82 Range $468.18 - $616.55

Q3 2020

Shares 11,907 Value ($000) $6,666 Avg Close $602.99 Range $537.02 - $660.97

Q2 2020

Shares 3,244 Value ($000) $2,023 Avg Close $564.49 Range $473.82 - $642.77

Q1 2020

Shares 6,967 Value ($000) $3,402 Avg Close $410.21 Range $326.32 - $515.14

Q4 2019

Shares 7,734 Value ($000) $2,904 Avg Close $334.59 Range $270.76 - $380.14

Q3 2019

Shares 24,246 Value ($000) $6,725 Avg Close $294.28 Range $269.87 - $318.99

Q2 2019

Shares 26,247 Value ($000) $8,216 Avg Close $331.08 Range $293.64 - $413.60

Q1 2019

Shares 327,061 Value ($000) $134,298 Avg Close $409.51 Range $363.99 - $439.56

Q4 2018

Shares 204,698 Value ($000) $76,454 Avg Close $364.00 Range $325.77 - $407.74

Q3 2018

Shares 175,241 Value ($000) $70,804 Avg Close $378.49 Range $340.69 - $414.19

Q2 2018

Shares 177,053 Value ($000) $61,081 Avg Close $311.03 Range $280.34 - $347.31

Q1 2018

Shares 310,724 Value ($000) $107,001 Avg Close $345.90 Range $311.80 - $394.59

Q4 2017

Shares 342,765 Value ($000) $128,867 Avg Close $402.77 Range $351.19 - $474.37

Q3 2017

Shares 502,098 Value ($000) $224,498 Avg Close $473.21 Range $424.12 - $523.22

Q2 2017

Shares 415,393 Value ($000) $204,015 Avg Close $435.19 Range $358.01 - $540.55

Q1 2017

Shares 301,499 Value ($000) $116,834 Avg Close $368.62 Range $338.21 - $399.00

Q4 2016

Shares 298,151 Value ($000) $109,448 Avg Close $378.17 Range $323.56 - $450.46

Q3 2016

Shares 291,374 Value ($000) $117,138 Avg Close $398.92 Range $346.51 - $441.54

Q2 2016

Shares 248,743 Value ($000) $86,868 Avg Close $383.00 Range $327.27 - $431.54

Q1 2016

Shares 210,740 Value ($000) $75,959 Avg Close $409.79 Range $347.04 - $529.97

Q4 2015

Shares 422,108 Value ($000) $229,150 Avg Close $538.82 Range $445.63 - $589.32

Q3 2015

Shares 443,667 Value ($000) $206,368 Avg Close $534.07 Range $433.12 - $602.59

Q2 2015

Shares 535,252 Value ($000) $273,048,103 Avg Close $485.93 Range $431.08 - $541.00

Q1 2015

Shares 559,164 Value ($000) $252,451,362 Avg Close $421.46 Range $390.83 - $492.77

Q4 2014

Shares 588,272 Value ($000) $241,338,588 Avg Close $391.09 Range $318.29 - $435.23

Q3 2014

Shares 566,932 Value ($000) $204,390 Avg Close $333.32 Range $283.49 - $367.27

Q2 2014

Shares 541,320 Value ($000) $152,907 Avg Close $294.74 Range $268.01 - $318.24

Q1 2014

Shares 394,067 Value ($000) $118,330,439 Avg Close $306.39 Range $261.52 - $350.55

Q4 2013

Shares 316,584 Value ($000) $87,136,579 Avg Close $286.03 Range $256.27 - $317.74

Q3 2013

Shares 312,337 Value ($000) $97,720,877 Avg Close $261.58 Range $224.53 - $318.07

Q2 2013

Shares 283,183 Value ($000) $63,682,193 Avg Close $231.58 Range $176.14 - $282.42

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	20,202	$10,606	$556.12	$475.17 - $638.52
Q1 2025	20,963	$13,295	$684.44	$615.89 - $745.12
Q4 2024	15,234	$10,852	$834.60	$689.18 - $1055.74
Q3 2024	514,265	$540,616	$1106.73	$1002.85 - $1204.52
Q2 2024	540,293	$567,864	$964.05	$870.40 - $1075.21
Q1 2024	480,524	$462,500	$945.64	$866.58 - $992.82
Q4 2023	242,350	$212,854	$818.96	$764.95 - $894.90
Q3 2023	235,471	$193,783	$781.58	$684.72 - $842.83
Q2 2023	550,723	$395,717	$766.75	$681.03 - $832.93
Q1 2023	551,526	$453,172	$750.05	$664.32 - $830.39
Q4 2022	548,269	$395,571	$733.79	$690.81 - $774.70
Q3 2022	198,409	$136,678	$625.92	$560.71 - $750.51
Q2 2021	2,650	$1,480	$503.83	$466.78 - $566.85
Q1 2021	10,718	$5,072	$484.19	$438.57 - $555.83
Q4 2020	10,827	$5,230	$536.82	$468.18 - $616.55
Q3 2020	11,907	$6,666	$602.99	$537.02 - $660.97
Q2 2020	3,244	$2,023	$564.49	$473.82 - $642.77
Q1 2020	6,967	$3,402	$410.21	$326.32 - $515.14
Q4 2019	7,734	$2,904	$334.59	$270.76 - $380.14
Q3 2019	24,246	$6,725	$294.28	$269.87 - $318.99
Q2 2019	26,247	$8,216	$331.08	$293.64 - $413.60
Q1 2019	327,061	$134,298	$409.51	$363.99 - $439.56
Q4 2018	204,698	$76,454	$364.00	$325.77 - $407.74
Q3 2018	175,241	$70,804	$378.49	$340.69 - $414.19
Q2 2018	177,053	$61,081	$311.03	$280.34 - $347.31
Q1 2018	310,724	$107,001	$345.90	$311.80 - $394.59
Q4 2017	342,765	$128,867	$402.77	$351.19 - $474.37
Q3 2017	502,098	$224,498	$473.21	$424.12 - $523.22
Q2 2017	415,393	$204,015	$435.19	$358.01 - $540.55
Q1 2017	301,499	$116,834	$368.62	$338.21 - $399.00
Q4 2016	298,151	$109,448	$378.17	$323.56 - $450.46
Q3 2016	291,374	$117,138	$398.92	$346.51 - $441.54
Q2 2016	248,743	$86,868	$383.00	$327.27 - $431.54
Q1 2016	210,740	$75,959	$409.79	$347.04 - $529.97
Q4 2015	422,108	$229,150	$538.82	$445.63 - $589.32
Q3 2015	443,667	$206,368	$534.07	$433.12 - $602.59
Q2 2015	535,252	$273,048,103	$485.93	$431.08 - $541.00
Q1 2015	559,164	$252,451,362	$421.46	$390.83 - $492.77
Q4 2014	588,272	$241,338,588	$391.09	$318.29 - $435.23
Q3 2014	566,932	$204,390	$333.32	$283.49 - $367.27
Q2 2014	541,320	$152,907	$294.74	$268.01 - $318.24
Q1 2014	394,067	$118,330,439	$306.39	$261.52 - $350.55
Q4 2013	316,584	$87,136,579	$286.03	$256.27 - $317.74
Q3 2013	312,337	$97,720,877	$261.58	$224.53 - $318.07
Q2 2013	283,183	$63,682,193	$231.58	$176.14 - $282.42