REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

CenterBook Partners LP's Holding History (CIK: 0001872738)

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

Q4 2025

Shares 30,246 Value ($000) $23,346 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 57,223 Value ($000) $32,175 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 51,591 Value ($000) $27,085 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 5,714 Value ($000) $3,624 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 15,984 Value ($000) $11,386 Avg Close $834.60 Range $689.18 - $1055.74

Q3 2024

Shares 23,768 Value ($000) $24,986 Avg Close $1106.73 Range $1002.85 - $1204.52

Q2 2024

Shares 4,718 Value ($000) $4,959 Avg Close $964.05 Range $870.40 - $1075.21

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	30,246	$23,346	$678.68	$540.32 - $792.77
Q3 2025	57,223	$32,175	$564.28	$519.56 - $609.69
Q2 2025	51,591	$27,085	$556.12	$475.17 - $638.52
Q1 2025	5,714	$3,624	$684.44	$615.89 - $745.12
Q4 2024	15,984	$11,386	$834.60	$689.18 - $1055.74
Q3 2024	23,768	$24,986	$1106.73	$1002.85 - $1204.52
Q2 2024	4,718	$4,959	$964.05	$870.40 - $1075.21