PICTON MAHONEY ASSET MANAGEMENT

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 1539041 Toronto, A6

Position in REGN

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$11,904,837

-$123,985 QoQ

Shares Held

15,408

-1.1% QoQ

Ownership

0.015%

of shares outstanding

% of Portfolio

0.13%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

9 quarters on record

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

Healthcare · as of Mar 31, 2026

PICTON MAHONEY ASSET MANAGEMENT holds $87,092,186 across 24 Biotechnology names. REGN ranks #3 (13.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FOLD	AMICUS THERAPEUTICS, INC.	1,330,842	$19,243,975
2	ACLX	Arcellx, Inc.	120,000	$13,778,400
3	REGN	Regeneron Pharmaceuticals, Inc. This page	15,408	$11,904,837
4	MIRM	Mirum Pharmaceuticals, Inc.	74,118	$6,847,020
5	ZYME	Zymeworks Inc.	256,690	$6,427,517
6	APLS	Apellis Pharmaceuticals, Inc.	150,000	$6,034,500
7	TERN	Terns Pharmaceuticals, Inc.	100,000	$5,272,000
8	CAI	Caris Life Sciences, Inc.	278,977	$4,988,108

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$11,904,837	15,408	-1.1%	Shares	Sole	2026-05-13
2025-12-31	$12,028,822	15,584	+89.2%	Shares	Sole	2026-02-11
2025-09-30	$4,630,293	8,235	+823400.0%	Shares	Sole	2025-11-12
2025-06-30	$525	1	0.0%	Shares	Sole	2025-08-12
2025-03-31	$634	1	0.0%	Shares	Sole	2025-05-07
2024-12-31	$712	1	0.0%	Shares	Sole	2025-04-02
2024-09-30	$1,051	1	-100.0%	Shares	Sole	2024-11-04
2020-06-30	$4,047,488	6,490	-28.9%	Shares	Sole	2020-08-05
2020-03-31	$4,455,646	9,125	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.