REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q4 2025

Shares 86,289 Value ($000) $67 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 86,587 Value ($000) $49 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 87,579 Value ($000) $46 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 91,707 Value ($000) $58 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 97,811 Value ($000) $70 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 100,427 Value ($000) $106 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 99,520 Value ($000) $105 Avg Close $964.05 Range $870.40 - $1075.21

Q1 2024

Shares 103,176 Value ($000) $99 Avg Close $945.64 Range $866.58 - $992.82

Q4 2023

Shares 106,938 Value ($000) $94 Avg Close $818.96 Range $764.95 - $894.90

Q3 2023

Shares 109,967 Value ($000) $90 Avg Close $781.58 Range $684.72 - $842.83

Q2 2023

Shares 115,568 Value ($000) $83 Avg Close $766.75 Range $681.03 - $832.93

Q1 2023

Shares 120,487 Value ($000) $99 Avg Close $750.05 Range $664.32 - $830.39

Q4 2022

Shares 123,270 Value ($000) $89 Avg Close $733.79 Range $690.81 - $774.70

Q3 2022

Shares 126,652 Value ($000) $87,247 Avg Close $625.92 Range $560.71 - $750.51

Q2 2022

Shares 127,208 Value ($000) $75,196 Avg Close $646.43 Range $535.04 - $743.30

Q1 2022

Shares 127,120 Value ($000) $88,783 Avg Close $629.16 Range $589.59 - $706.29

Q4 2021

Shares 125,943 Value ($000) $79,536 Avg Close $611.44 Range $536.21 - $670.14

Q3 2021

Shares 126,341 Value ($000) $76,459 Avg Close $617.39 Range $551.89 - $682.83

Q2 2021

Shares 128,742 Value ($000) $71,908 Avg Close $503.83 Range $466.78 - $566.85

Q1 2021

Shares 133,379 Value ($000) $63,107 Avg Close $484.19 Range $438.57 - $555.83

Q4 2020

Shares 133,304 Value ($000) $64,400 Avg Close $536.82 Range $468.18 - $616.55

Q3 2020

Shares 132,185 Value ($000) $73,995 Avg Close $602.99 Range $537.02 - $660.97

Q2 2020

Shares 129,357 Value ($000) $80,673 Avg Close $564.49 Range $473.82 - $642.77

Q1 2020

Shares 106,791 Value ($000) $52,145 Avg Close $410.21 Range $326.32 - $515.14

Q4 2019

Shares 109,091 Value ($000) $40,961 Avg Close $334.59 Range $270.76 - $380.14

Q3 2019

Shares 107,842 Value ($000) $29,915 Avg Close $294.28 Range $269.87 - $318.99

Q2 2019

Shares 109,164 Value ($000) $34,168 Avg Close $331.08 Range $293.64 - $413.60

Q1 2019

Shares 112,831 Value ($000) $46,331 Avg Close $409.51 Range $363.99 - $439.56

Q4 2018

Shares 108,684 Value ($000) $40,593 Avg Close $364.00 Range $325.77 - $407.74

Q3 2018

Shares 112,876 Value ($000) $45,606 Avg Close $378.49 Range $340.69 - $414.19

Q2 2018

Shares 116,237 Value ($000) $40,101 Avg Close $311.03 Range $280.34 - $347.31

Q1 2018

Shares 120,167 Value ($000) $41,381 Avg Close $345.90 Range $311.80 - $394.59

Q4 2017

Shares 120,855 Value ($000) $45,437 Avg Close $402.77 Range $351.19 - $474.37

Q3 2017

Shares 120,842 Value ($000) $54,031 Avg Close $473.21 Range $424.12 - $523.22

Q2 2017

Shares 121,303 Value ($000) $59,577 Avg Close $435.19 Range $358.01 - $540.55

Q1 2017

Shares 130,694 Value ($000) $50,645 Avg Close $368.62 Range $338.21 - $399.00

Q4 2016

Shares 131,966 Value ($000) $48,443 Avg Close $378.17 Range $323.56 - $450.46

Q3 2016

Shares 132,788 Value ($000) $53,383 Avg Close $398.92 Range $346.51 - $441.54

Q2 2016

Shares 138,311 Value ($000) $48,302 Avg Close $383.00 Range $327.27 - $431.54

Q1 2016

Shares 141,818 Value ($000) $51,117 Avg Close $409.79 Range $347.04 - $529.97

Q4 2015

Shares 142,277 Value ($000) $77,238 Avg Close $538.82 Range $445.63 - $589.32

Q3 2015

Shares 140,847 Value ($000) $65,514 Avg Close $534.07 Range $433.12 - $602.59

Q2 2015

Shares 140,766 Value ($000) $71,809 Avg Close $485.93 Range $431.08 - $541.00

Q1 2015

Shares 143,014 Value ($000) $64,568 Avg Close $421.46 Range $390.83 - $492.77

Q4 2014

Shares 143,755 Value ($000) $58,975 Avg Close $391.09 Range $318.29 - $435.23

Q3 2014

Shares 151,714 Value ($000) $54,696 Avg Close $333.32 Range $283.49 - $367.27

Q2 2014

Shares 157,070 Value ($000) $44,368 Avg Close $294.74 Range $268.01 - $318.24

Q1 2014

Shares 159,812 Value ($000) $47,988 Avg Close $306.39 Range $261.52 - $350.55

Q4 2013

Shares 162,419 Value ($000) $44,704 Avg Close $286.03 Range $256.27 - $317.74

Q3 2013

Shares 164,360 Value ($000) $51,423 Avg Close $261.58 Range $224.53 - $318.07

Q2 2013

Shares 168,782 Value ($000) $37,956 Avg Close $231.58 Range $176.14 - $282.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	86,289	$67	$678.68	$540.32 - $792.77
Q3 2025	86,587	$49	$564.28	$519.56 - $609.69
Q2 2025	87,579	$46	$556.12	$475.17 - $638.52
Q1 2025	91,707	$58	$684.44	$615.89 - $745.12
Q4 2024	97,811	$70	$834.60	$689.18 - $1055.74
Q3 2024	100,427	$106	$1106.73	$1002.85 - $1204.52
Q2 2024	99,520	$105	$964.05	$870.40 - $1075.21
Q1 2024	103,176	$99	$945.64	$866.58 - $992.82
Q4 2023	106,938	$94	$818.96	$764.95 - $894.90
Q3 2023	109,967	$90	$781.58	$684.72 - $842.83
Q2 2023	115,568	$83	$766.75	$681.03 - $832.93
Q1 2023	120,487	$99	$750.05	$664.32 - $830.39
Q4 2022	123,270	$89	$733.79	$690.81 - $774.70
Q3 2022	126,652	$87,247	$625.92	$560.71 - $750.51
Q2 2022	127,208	$75,196	$646.43	$535.04 - $743.30
Q1 2022	127,120	$88,783	$629.16	$589.59 - $706.29
Q4 2021	125,943	$79,536	$611.44	$536.21 - $670.14
Q3 2021	126,341	$76,459	$617.39	$551.89 - $682.83
Q2 2021	128,742	$71,908	$503.83	$466.78 - $566.85
Q1 2021	133,379	$63,107	$484.19	$438.57 - $555.83
Q4 2020	133,304	$64,400	$536.82	$468.18 - $616.55
Q3 2020	132,185	$73,995	$602.99	$537.02 - $660.97
Q2 2020	129,357	$80,673	$564.49	$473.82 - $642.77
Q1 2020	106,791	$52,145	$410.21	$326.32 - $515.14
Q4 2019	109,091	$40,961	$334.59	$270.76 - $380.14
Q3 2019	107,842	$29,915	$294.28	$269.87 - $318.99
Q2 2019	109,164	$34,168	$331.08	$293.64 - $413.60
Q1 2019	112,831	$46,331	$409.51	$363.99 - $439.56
Q4 2018	108,684	$40,593	$364.00	$325.77 - $407.74
Q3 2018	112,876	$45,606	$378.49	$340.69 - $414.19
Q2 2018	116,237	$40,101	$311.03	$280.34 - $347.31
Q1 2018	120,167	$41,381	$345.90	$311.80 - $394.59
Q4 2017	120,855	$45,437	$402.77	$351.19 - $474.37
Q3 2017	120,842	$54,031	$473.21	$424.12 - $523.22
Q2 2017	121,303	$59,577	$435.19	$358.01 - $540.55
Q1 2017	130,694	$50,645	$368.62	$338.21 - $399.00
Q4 2016	131,966	$48,443	$378.17	$323.56 - $450.46
Q3 2016	132,788	$53,383	$398.92	$346.51 - $441.54
Q2 2016	138,311	$48,302	$383.00	$327.27 - $431.54
Q1 2016	141,818	$51,117	$409.79	$347.04 - $529.97
Q4 2015	142,277	$77,238	$538.82	$445.63 - $589.32
Q3 2015	140,847	$65,514	$534.07	$433.12 - $602.59
Q2 2015	140,766	$71,809	$485.93	$431.08 - $541.00
Q1 2015	143,014	$64,568	$421.46	$390.83 - $492.77
Q4 2014	143,755	$58,975	$391.09	$318.29 - $435.23
Q3 2014	151,714	$54,696	$333.32	$283.49 - $367.27
Q2 2014	157,070	$44,368	$294.74	$268.01 - $318.24
Q1 2014	159,812	$47,988	$306.39	$261.52 - $350.55
Q4 2013	162,419	$44,704	$286.03	$256.27 - $317.74
Q3 2013	164,360	$51,423	$261.58	$224.53 - $318.07
Q2 2013	168,782	$37,956	$231.58	$176.14 - $282.42