REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q4 2025

Shares 8,559 Value ($000) $6,606 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 6,114 Value ($000) $3 Avg Close $564.28 Range $519.56 - $609.69

Q4 2024

Shares 3,131 Value ($000) $2 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 3,749 Value ($000) $4 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 5,037 Value ($000) $5 Avg Close $964.05 Range $870.40 - $1075.21

Q4 2023

Shares 6,984 Value ($000) $6 Avg Close $818.96 Range $764.95 - $894.90

Q3 2023

Shares 7,807 Value ($000) $6 Avg Close $781.58 Range $684.72 - $842.83

Q2 2023

Shares 6,817 Value ($000) $5 Avg Close $766.75 Range $681.03 - $832.93

Q2 2022

Shares 6,133 Value ($000) $3,625 Avg Close $646.43 Range $535.04 - $743.30

Q1 2022

Shares 5,339 Value ($000) $3,728 Avg Close $629.16 Range $589.59 - $706.29

Q3 2021

Shares 2,801 Value ($000) $1,609 Avg Close $617.39 Range $551.89 - $682.83

Q2 2021

Shares 2,463 Value ($000) $1,375 Avg Close $503.83 Range $466.78 - $566.85

Q4 2020

Shares 4,860 Value ($000) $2,347 Avg Close $536.82 Range $468.18 - $616.55

Q3 2020

Shares 4,609 Value ($000) $2,580 Avg Close $602.99 Range $537.02 - $660.97

Q2 2020

Shares 6,310 Value ($000) $3,935 Avg Close $564.49 Range $473.82 - $642.77

Q3 2019

Shares 4,730 Value ($000) $1,312 Avg Close $294.28 Range $269.87 - $318.99

Q3 2018

Shares 12,014 Value ($000) $4,854 Avg Close $378.49 Range $340.69 - $414.19

Q2 2018

Shares 18,045 Value ($000) $6,225 Avg Close $311.03 Range $280.34 - $347.31

Q4 2017

Shares 14,443 Value ($000) $5,429 Avg Close $402.77 Range $351.19 - $474.37

Q3 2017

Shares 4,173 Value ($000) $1,865 Avg Close $473.21 Range $424.12 - $523.22

Q2 2017

Shares 26,921 Value ($000) $13,221 Avg Close $435.19 Range $358.01 - $540.55

Q4 2016

Shares 7,033 Value ($000) $2,581 Avg Close $378.17 Range $323.56 - $450.46

Q3 2016

Shares 3,881 Value ($000) $1,560 Avg Close $398.92 Range $346.51 - $441.54

Q2 2016

Shares 4,864 Value ($000) $1,698 Avg Close $383.00 Range $327.27 - $431.54

Q2 2015

Shares 3,079 Value ($000) $1,570 Avg Close $485.93 Range $431.08 - $541.00

Q1 2015

Shares 3,514 Value ($000) $1,586 Avg Close $421.46 Range $390.83 - $492.77

Q4 2014

Shares 1,110 Value ($000) $455 Avg Close $391.09 Range $318.29 - $435.23

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,559	$6,606	$678.68	$540.32 - $792.77
Q3 2025	6,114	$3	$564.28	$519.56 - $609.69
Q4 2024	3,131	$2	$834.60	$689.18 - $1055.74
Q3 2024	3,749	$4	$1106.73	$1002.85 - $1204.52
Q2 2024	5,037	$5	$964.05	$870.40 - $1075.21
Q4 2023	6,984	$6	$818.96	$764.95 - $894.90
Q3 2023	7,807	$6	$781.58	$684.72 - $842.83
Q2 2023	6,817	$5	$766.75	$681.03 - $832.93
Q2 2022	6,133	$3,625	$646.43	$535.04 - $743.30
Q1 2022	5,339	$3,728	$629.16	$589.59 - $706.29
Q3 2021	2,801	$1,609	$617.39	$551.89 - $682.83
Q2 2021	2,463	$1,375	$503.83	$466.78 - $566.85
Q4 2020	4,860	$2,347	$536.82	$468.18 - $616.55
Q3 2020	4,609	$2,580	$602.99	$537.02 - $660.97
Q2 2020	6,310	$3,935	$564.49	$473.82 - $642.77
Q3 2019	4,730	$1,312	$294.28	$269.87 - $318.99
Q3 2018	12,014	$4,854	$378.49	$340.69 - $414.19
Q2 2018	18,045	$6,225	$311.03	$280.34 - $347.31
Q4 2017	14,443	$5,429	$402.77	$351.19 - $474.37
Q3 2017	4,173	$1,865	$473.21	$424.12 - $523.22
Q2 2017	26,921	$13,221	$435.19	$358.01 - $540.55
Q4 2016	7,033	$2,581	$378.17	$323.56 - $450.46
Q3 2016	3,881	$1,560	$398.92	$346.51 - $441.54
Q2 2016	4,864	$1,698	$383.00	$327.27 - $431.54
Q2 2015	3,079	$1,570	$485.93	$431.08 - $541.00
Q1 2015	3,514	$1,586	$421.46	$390.83 - $492.77
Q4 2014	1,110	$455	$391.09	$318.29 - $435.23