REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

Sienna Gestion's Holding History (CIK: 0002021242)

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

Q4 2025
Shares 1,499 Value ($000) $1,154 Avg Close $678.68 Range $540.32 - $792.77
Q3 2025
Shares 495 Value ($000) $254 Avg Close $564.28 Range $519.56 - $609.69
Q2 2025
Shares 10,122 Value ($000) $4,852 Avg Close $556.12 Range $475.17 - $638.52
Q1 2025
Shares 9,165 Value ($000) $5,650 Avg Close $684.44 Range $615.89 - $745.12
Q4 2024
Shares 9,731 Value ($000) $6,931 Avg Close $834.60 Range $689.18 - $1055.74
Q3 2024
Shares 9,731 Value ($000) $10,205 Avg Close $1106.73 Range $1002.85 - $1204.52
Q2 2024
Shares 7,799 Value ($000) $8,193 Avg Close $964.05 Range $870.40 - $1075.21
Q1 2024
Shares 7,799 Value ($000) $7,506 Avg Close $945.64 Range $866.58 - $992.82