Sarissa Capital Management LP

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 1577524 GREENWICH, CT

Position in REGN

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$3,237,361

+$3,226 QoQ

Shares Held

4,190

0.0% QoQ

Ownership

0.004%

of shares outstanding

% of Portfolio

2.05%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2025

3 quarters on record

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

Healthcare · as of Mar 31, 2026

Sarissa Capital Management LP holds $73,174,691 across 5 Biotechnology names. REGN ranks #4 (4.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	INVA	Innoviva, Inc.	2,130,950	$49,651,135
2	CYTK	Cytokinetics Inc	228,623	$15,068,541
3	BHVN	Biohaven Ltd.	563,184	$4,764,536
4	REGN	Regeneron Pharmaceuticals, Inc. This page	4,190	$3,237,361
5	VOR	Vor Biopharma Inc.	25,399	$453,118

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,237,361	4,190	0.0%	Shares	Sole	2026-05-15
2025-12-31	$3,234,135	4,190	0.0%	Shares	Sole	2026-02-17
2025-09-30	$2,355,911	4,190	—	Shares	Sole	2025-11-14
No filing history on record for this holder in this stock.