REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

ANCHOR CAPITAL ADVISORS LLC's Holding History (CIK: 0000813933)

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

Q4 2025

Shares 12,499 Value ($000) $9,648 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 11,797 Value ($000) $6,633 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 11,372 Value ($000) $5,970 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 10,997 Value ($000) $6,974 Avg Close $684.44 Range $615.89 - $745.12

Q4 2024

Shares 10,847 Value ($000) $7,727 Avg Close $834.60 Range $689.18 - $1055.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	12,499	$9,648	$678.68	$540.32 - $792.77
Q3 2025	11,797	$6,633	$564.28	$519.56 - $609.69
Q2 2025	11,372	$5,970	$556.12	$475.17 - $638.52
Q1 2025	10,997	$6,974	$684.44	$615.89 - $745.12
Q4 2024	10,847	$7,727	$834.60	$689.18 - $1055.74