Regeneron Pharmaceuticals, Inc.

SOUTHEASTERN ASSET MANAGEMENT INC/TN/ REGN

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/13/2026

Shares

165,792

Value ($000)

127,970

Weight

5.7%

2025 Q2 - 2025 Q4 (3 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/13/2026	127,970	5.7%	165,792	12/31/2025
2025 Q3	11/14/2025	81,308	4.2%	144,607	9/30/2025
2025 Q2	8/14/2025	84,305	4.3%	160,581	6/30/2025