REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

BROWN ADVISORY INC's Holding History (CIK: 0001345929)

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

Q4 2025

Shares 3,450 Value ($000) $2,663 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 3,341 Value ($000) $1,879 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 3,780 Value ($000) $1,984 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 4,269 Value ($000) $2,708 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 4,516 Value ($000) $3,217 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 4,625 Value ($000) $4,862 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 4,662 Value ($000) $4,900 Avg Close $964.05 Range $870.40 - $1075.21

Q1 2024

Shares 4,649 Value ($000) $4,475 Avg Close $945.64 Range $866.58 - $992.82

Q4 2023

Shares 4,010 Value ($000) $3,522 Avg Close $818.96 Range $764.95 - $894.90

Q3 2023

Shares 4,079 Value ($000) $3,357 Avg Close $781.58 Range $684.72 - $842.83

Q2 2023

Shares 4,080 Value ($000) $2,932 Avg Close $766.75 Range $681.03 - $832.93

Q1 2023

Shares 4,313 Value ($000) $3,544 Avg Close $750.05 Range $664.32 - $830.39

Q4 2022

Shares 4,564 Value ($000) $3,293 Avg Close $733.79 Range $690.81 - $774.70

Q3 2022

Shares 4,637 Value ($000) $3,195 Avg Close $625.92 Range $560.71 - $750.51

Q2 2022

Shares 2,962 Value ($000) $1,751 Avg Close $646.43 Range $535.04 - $743.30

Q1 2022

Shares 2,579 Value ($000) $1,801 Avg Close $629.16 Range $589.59 - $706.29

Q4 2021

Shares 2,605 Value ($000) $1,645 Avg Close $611.44 Range $536.21 - $670.14

Q3 2021

Shares 2,407 Value ($000) $1,457 Avg Close $617.39 Range $551.89 - $682.83

Q2 2021

Shares 2,404 Value ($000) $1,343 Avg Close $503.83 Range $466.78 - $566.85

Q1 2021

Shares 2,290 Value ($000) $1,084 Avg Close $484.19 Range $438.57 - $555.83

Q4 2020

Shares 2,281 Value ($000) $1,102 Avg Close $536.82 Range $468.18 - $616.55

Q3 2020

Shares 2,731 Value ($000) $1,529 Avg Close $602.99 Range $537.02 - $660.97

Q2 2020

Shares 2,727 Value ($000) $1,701 Avg Close $564.49 Range $473.82 - $642.77

Q1 2020

Shares 2,693 Value ($000) $1,314 Avg Close $410.21 Range $326.32 - $515.14

Q4 2019

Shares 2,673 Value ($000) $1,004 Avg Close $334.59 Range $270.76 - $380.14

Q3 2019

Shares 2,546 Value ($000) $707 Avg Close $294.28 Range $269.87 - $318.99

Q2 2019

Shares 1,300 Value ($000) $407 Avg Close $331.08 Range $293.64 - $413.60

Q1 2019

Shares 2,090 Value ($000) $859 Avg Close $409.51 Range $363.99 - $439.56

Q4 2018

Shares 1,922 Value ($000) $717 Avg Close $364.00 Range $325.77 - $407.74

Q3 2018

Shares 3,160 Value ($000) $1,276 Avg Close $378.49 Range $340.69 - $414.19

Q2 2018

Shares 11,823 Value ($000) $4,079 Avg Close $311.03 Range $280.34 - $347.31

Q1 2018

Shares 2,925 Value ($000) $1,007 Avg Close $345.90 Range $311.80 - $394.59

Q4 2017

Shares 2,835 Value ($000) $1,065 Avg Close $402.77 Range $351.19 - $474.37

Q3 2017

Shares 2,725 Value ($000) $1,218 Avg Close $473.21 Range $424.12 - $523.22

Q2 2017

Shares 2,746 Value ($000) $1,348 Avg Close $435.19 Range $358.01 - $540.55

Q1 2017

Shares 2,892 Value ($000) $1,121 Avg Close $368.62 Range $338.21 - $399.00

Q4 2016

Shares 2,640 Value ($000) $969 Avg Close $378.17 Range $323.56 - $450.46

Q3 2016

Shares 1,962 Value ($000) $788 Avg Close $398.92 Range $346.51 - $441.54

Q2 2016

Shares 3,502 Value ($000) $1,223 Avg Close $383.00 Range $327.27 - $431.54

Q1 2016

Shares 1,851 Value ($000) $667 Avg Close $409.79 Range $347.04 - $529.97

Q4 2015

Shares 1,920 Value ($000) $1,042 Avg Close $538.82 Range $445.63 - $589.32

Q3 2015

Shares 1,862 Value ($000) $866 Avg Close $534.07 Range $433.12 - $602.59

Q2 2015

Shares 730 Value ($000) $372 Avg Close $485.93 Range $431.08 - $541.00

Q1 2015

Shares 2,070 Value ($000) $935 Avg Close $421.46 Range $390.83 - $492.77

Q4 2014

Shares 2,239 Value ($000) $919 Avg Close $391.09 Range $318.29 - $435.23

Q3 2014

Shares 3,038 Value ($000) $1,095 Avg Close $333.32 Range $283.49 - $367.27

Q2 2014

Shares 2,934 Value ($000) $830 Avg Close $294.74 Range $268.01 - $318.24

Q1 2014

Shares 2,899 Value ($000) $871 Avg Close $306.39 Range $261.52 - $350.55

Q4 2013

Shares 2,883 Value ($000) $794 Avg Close $286.03 Range $256.27 - $317.74

Q3 2013

Shares 2,533 Value ($000) $793 Avg Close $261.58 Range $224.53 - $318.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,450	$2,663	$678.68	$540.32 - $792.77
Q3 2025	3,341	$1,879	$564.28	$519.56 - $609.69
Q2 2025	3,780	$1,984	$556.12	$475.17 - $638.52
Q1 2025	4,269	$2,708	$684.44	$615.89 - $745.12
Q4 2024	4,516	$3,217	$834.60	$689.18 - $1055.74
Q3 2024	4,625	$4,862	$1106.73	$1002.85 - $1204.52
Q2 2024	4,662	$4,900	$964.05	$870.40 - $1075.21
Q1 2024	4,649	$4,475	$945.64	$866.58 - $992.82
Q4 2023	4,010	$3,522	$818.96	$764.95 - $894.90
Q3 2023	4,079	$3,357	$781.58	$684.72 - $842.83
Q2 2023	4,080	$2,932	$766.75	$681.03 - $832.93
Q1 2023	4,313	$3,544	$750.05	$664.32 - $830.39
Q4 2022	4,564	$3,293	$733.79	$690.81 - $774.70
Q3 2022	4,637	$3,195	$625.92	$560.71 - $750.51
Q2 2022	2,962	$1,751	$646.43	$535.04 - $743.30
Q1 2022	2,579	$1,801	$629.16	$589.59 - $706.29
Q4 2021	2,605	$1,645	$611.44	$536.21 - $670.14
Q3 2021	2,407	$1,457	$617.39	$551.89 - $682.83
Q2 2021	2,404	$1,343	$503.83	$466.78 - $566.85
Q1 2021	2,290	$1,084	$484.19	$438.57 - $555.83
Q4 2020	2,281	$1,102	$536.82	$468.18 - $616.55
Q3 2020	2,731	$1,529	$602.99	$537.02 - $660.97
Q2 2020	2,727	$1,701	$564.49	$473.82 - $642.77
Q1 2020	2,693	$1,314	$410.21	$326.32 - $515.14
Q4 2019	2,673	$1,004	$334.59	$270.76 - $380.14
Q3 2019	2,546	$707	$294.28	$269.87 - $318.99
Q2 2019	1,300	$407	$331.08	$293.64 - $413.60
Q1 2019	2,090	$859	$409.51	$363.99 - $439.56
Q4 2018	1,922	$717	$364.00	$325.77 - $407.74
Q3 2018	3,160	$1,276	$378.49	$340.69 - $414.19
Q2 2018	11,823	$4,079	$311.03	$280.34 - $347.31
Q1 2018	2,925	$1,007	$345.90	$311.80 - $394.59
Q4 2017	2,835	$1,065	$402.77	$351.19 - $474.37
Q3 2017	2,725	$1,218	$473.21	$424.12 - $523.22
Q2 2017	2,746	$1,348	$435.19	$358.01 - $540.55
Q1 2017	2,892	$1,121	$368.62	$338.21 - $399.00
Q4 2016	2,640	$969	$378.17	$323.56 - $450.46
Q3 2016	1,962	$788	$398.92	$346.51 - $441.54
Q2 2016	3,502	$1,223	$383.00	$327.27 - $431.54
Q1 2016	1,851	$667	$409.79	$347.04 - $529.97
Q4 2015	1,920	$1,042	$538.82	$445.63 - $589.32
Q3 2015	1,862	$866	$534.07	$433.12 - $602.59
Q2 2015	730	$372	$485.93	$431.08 - $541.00
Q1 2015	2,070	$935	$421.46	$390.83 - $492.77
Q4 2014	2,239	$919	$391.09	$318.29 - $435.23
Q3 2014	3,038	$1,095	$333.32	$283.49 - $367.27
Q2 2014	2,934	$830	$294.74	$268.01 - $318.24
Q1 2014	2,899	$871	$306.39	$261.52 - $350.55
Q4 2013	2,883	$794	$286.03	$256.27 - $317.74
Q3 2013	2,533	$793	$261.58	$224.53 - $318.07