Regeneron Pharmaceuticals, Inc.

ADAGE CAPITAL PARTNERS GP, L.L.C. REGN

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/17/2026

Shares

82,446

Value ($000)

63,638

Weight

0.1%

2013 Q4 - 2025 Q4 (25 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	2/17/2026	63,638	0.1%	82,446	12/31/2025
2025 Q3	11/14/2025	69,185	0.1%	123,046	9/30/2025
2025 Q2	8/14/2025	50,206	0.1%	95,630	6/30/2025
2025 Q1	5/15/2025	58,822	0.1%	92,745	3/31/2025
2024 Q4	2/14/2025	31,591	0.1%	44,349	12/31/2024
2024 Q3	11/14/2024	178,331	0.3%	169,639	9/30/2024
2024 Q2	8/14/2024	170,791	0.3%	162,499	6/30/2024
2024 Q1	5/15/2024	127,182	0.2%	132,138	3/31/2024
2023 Q4	2/14/2024	119,139	0.2%	135,649	12/31/2023
2023 Q3	11/14/2023	77,975	0.2%	94,749	9/30/2023
2023 Q2	8/14/2023	99,194	0.2%	138,049	6/30/2023
2023 Q1	5/15/2023	142,354	0.3%	173,249	3/31/2023
2022 Q4	2/14/2023	52,180	0.1%	72,322	12/31/2022
2022 Q3	11/14/2022	42,881	0.1%	62,249	9/30/2022
2022 Q1	5/16/2022	65,965	0.1%	94,449	3/31/2022
2021 Q4	2/14/2022	60,404	0.1%	95,649	12/31/2021
2021 Q3	11/15/2021	57,785	0.1%	95,484	9/30/2021
2021 Q2	8/16/2021	54,014	0.1%	96,706	6/30/2021
2021 Q1	5/17/2021	22,903	0.0%	48,406	3/31/2021
2020 Q4	2/16/2021	48,604	0.1%	100,606	12/31/2020
2020 Q3	11/16/2020	56,950	0.1%	101,736	9/30/2020
2020 Q2	8/14/2020	94,100	0.2%	150,886	6/30/2020
2020 Q1	5/15/2020	32,265	0.1%	66,078	3/31/2020
2014 Q1	5/15/2014	90,888	0.2%	302,680	3/31/2014
2013 Q4	2/14/2014	33,271	0.1%	120,880	12/31/2013