BROWN BROTHERS HARRIMAN & CO

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 14661 NEW YORK, NY

Position in REGN

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$1,392,297

+$570,256 QoQ

Shares Held

1,802

+69.2% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

BROWN BROTHERS HARRIMAN & CO holds $9,680,711 across 45 Biotechnology names. REGN ranks #4 (14.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	5,838	$2,606,900
2	PCVX	Vaxcyte, Inc.	38,033	$2,210,097
3	RVMD	Revolution Medicines, Inc.	15,000	$1,458,750
4	REGN	Regeneron Pharmaceuticals, Inc. This page	1,802	$1,392,297
5	ADMA	Adma Biologics, Inc.	39,973	$360,156
6	TECH	BIO-TECHNE Corp	6,724	$351,396
7	MRNA	Moderna, Inc.	6,843	$347,624
8	INCY	Incyte Corp	1,937	$182,310

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,392,297	1,802	+69.2%	Shares	Sole	2026-05-14
2025-12-31	$822,041	1,065	+109.6%	Shares	Sole	2026-02-12
2025-09-30	$285,633	508	+104.8%	Shares	Sole	2025-11-13
2025-06-30	$130,200	248	-10.8%	Shares	Sole	2025-08-11
2025-03-31	$176,315	278	-47.2%	Shares	Sole	2025-05-14
2024-12-31	$375,397	527	+9.3%	Shares	Sole	2025-02-12
2024-09-30	$506,697	482	-0.4%	Shares	Sole	2024-11-13
2024-06-30	$508,698	484	-3.6%	Shares	Sole	2024-08-09
2024-03-31	$483,169	502	-27.4%	Shares	Sole	2024-05-10
2023-12-31	$606,898	691	+7.0%	Shares	Sole	2024-02-12
2023-09-30	$531,632	646	+87.8%	Shares	Sole	2023-11-13
2023-06-30	$247,177	344	-41.8%	Shares	Sole	2023-08-07
2023-03-31	$485,606	591	+3.9%	Shares	Sole	2023-05-11
2022-12-31	$410,527	569	+55.9%	Shares	Sole	2023-02-09
2022-09-30	$251,437	365	+0.3%	Shares	Sole	2022-11-14
2022-06-30	$215,171	364	-3.7%	Shares	Sole	2022-08-11
2022-03-31	$264,002	378	+14.2%	Shares	Sole	2022-05-13
2021-12-31	$209,033	331	-41.9%	Shares	Sole	2022-02-14
2021-09-30	$344,952	570	+1.1%	Shares	Sole	2021-11-15
2021-06-30	$315,016	564	-18.4%	Shares	Sole	2021-08-13
2021-03-31	$326,939	691	-59.7%	Shares	Sole	2021-05-13
2020-12-31	$829,016	1,716	+4.2%	Shares	Sole	2021-02-16
2020-09-30	$921,957	1,647	-7.1%	Shares	Sole	2020-11-16
2020-06-30	$1,105,107	1,772	+292.9%	Shares	Sole	2020-08-13
2020-03-31	$220,218	451	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.