REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

MASSMUTUAL TRUST CO FSB/ADV's Holding History (CIK: 0001103653)

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

Q4 2025

Shares 11,103 Value ($000) $8,570 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 10,109 Value ($000) $5,684 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 8,842 Value ($000) $4,642 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 4,166 Value ($000) $2,642 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 4,069 Value ($000) $2,898 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 4,539 Value ($000) $4,772 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 4,680 Value ($000) $4,919 Avg Close $964.05 Range $870.40 - $1075.21

Q1 2024

Shares 4,065 Value ($000) $3,913 Avg Close $945.64 Range $866.58 - $992.82

Q4 2023

Shares 4,013 Value ($000) $3,525 Avg Close $818.96 Range $764.95 - $894.90

Q3 2023

Shares 4,013 Value ($000) $3,303 Avg Close $781.58 Range $684.72 - $842.83

Q2 2023

Shares 4,100 Value ($000) $2,946 Avg Close $766.75 Range $681.03 - $832.93

Q1 2023

Shares 4,213 Value ($000) $3,462 Avg Close $750.05 Range $664.32 - $830.39

Q4 2022

Shares 4,084 Value ($000) $3 Avg Close $733.79 Range $690.81 - $774.70

Q3 2022

Shares 4,000 Value ($000) $2,755 Avg Close $625.92 Range $560.71 - $750.51

Q2 2022

Shares 3,898 Value ($000) $2,304 Avg Close $646.43 Range $535.04 - $743.30

Q1 2022

Shares 3,341 Value ($000) $2,333 Avg Close $629.16 Range $589.59 - $706.29

Q4 2021

Shares 3,054 Value ($000) $1,929 Avg Close $611.44 Range $536.21 - $670.14

Q3 2021

Shares 20 Value ($000) $12 Avg Close $617.39 Range $551.89 - $682.83

Q2 2021

Shares 20 Value ($000) $11 Avg Close $503.83 Range $466.78 - $566.85

Q1 2021

Shares 4 Value ($000) $2 Avg Close $484.19 Range $438.57 - $555.83

Q1 2017

Shares 4 Value ($000) $1,550 Avg Close $368.62 Range $338.21 - $399.00

Q3 2015

Shares 21 Value ($000) $7,571 Avg Close $534.07 Range $433.12 - $602.59

Q3 2014

Shares 21 Value ($000) $7,571 Avg Close $333.32 Range $283.49 - $367.27

Q4 2013

Shares 33 Value ($000) $9,083 Avg Close $286.03 Range $256.27 - $317.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	11,103	$8,570	$678.68	$540.32 - $792.77
Q3 2025	10,109	$5,684	$564.28	$519.56 - $609.69
Q2 2025	8,842	$4,642	$556.12	$475.17 - $638.52
Q1 2025	4,166	$2,642	$684.44	$615.89 - $745.12
Q4 2024	4,069	$2,898	$834.60	$689.18 - $1055.74
Q3 2024	4,539	$4,772	$1106.73	$1002.85 - $1204.52
Q2 2024	4,680	$4,919	$964.05	$870.40 - $1075.21
Q1 2024	4,065	$3,913	$945.64	$866.58 - $992.82
Q4 2023	4,013	$3,525	$818.96	$764.95 - $894.90
Q3 2023	4,013	$3,303	$781.58	$684.72 - $842.83
Q2 2023	4,100	$2,946	$766.75	$681.03 - $832.93
Q1 2023	4,213	$3,462	$750.05	$664.32 - $830.39
Q4 2022	4,084	$3	$733.79	$690.81 - $774.70
Q3 2022	4,000	$2,755	$625.92	$560.71 - $750.51
Q2 2022	3,898	$2,304	$646.43	$535.04 - $743.30
Q1 2022	3,341	$2,333	$629.16	$589.59 - $706.29
Q4 2021	3,054	$1,929	$611.44	$536.21 - $670.14
Q3 2021	20	$12	$617.39	$551.89 - $682.83
Q2 2021	20	$11	$503.83	$466.78 - $566.85
Q1 2021	4	$2	$484.19	$438.57 - $555.83
Q1 2017	4	$1,550	$368.62	$338.21 - $399.00
Q3 2015	21	$7,571	$534.07	$433.12 - $602.59
Q3 2014	21	$7,571	$333.32	$283.49 - $367.27
Q4 2013	33	$9,083	$286.03	$256.27 - $317.74