REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

Costello Asset Management, INC's Holding History (CIK: 0001760145)

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

Q4 2025

Shares 43 Value ($000) $33 Avg Close $678.68 Range $540.32 - $792.77

Q3 2025

Shares 43 Value ($000) $24 Avg Close $564.28 Range $519.56 - $609.69

Q2 2025

Shares 43 Value ($000) $23 Avg Close $556.12 Range $475.17 - $638.52

Q1 2025

Shares 43 Value ($000) $27 Avg Close $684.44 Range $615.89 - $745.12

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	43	$33	$678.68	$540.32 - $792.77
Q3 2025	43	$24	$564.28	$519.56 - $609.69
Q2 2025	43	$23	$556.12	$475.17 - $638.52
Q1 2025	43	$27	$684.44	$615.89 - $745.12