CHICAGO TRUST Co NA

Bank

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 1601539 GRAYSLAKE, IL

Position in REGN

as of Jun 30, 2026 · filed Jul 16, 2026 Compact

Position Value

$350,429

+$116,320 QoQ

Shares Held

562

+85.5% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.06%

of 13F equity value

Holder Rank

#897

of 1,322 holders

Holding Since

Jun 2021

5 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

CHICAGO TRUST Co NA holds $832,069 across 3 Biotechnology names. REGN ranks #1 (42.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	REGN	Regeneron Pharmaceuticals, Inc. This page	562	$350,429
2	RPRX	Royalty Pharma plc	5,961	$334,232
3	PRTA	Prothena Corp Public Ltd Co	15,057	$147,408

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$350,429	562	+85.5%	Shares	Sole	2026-07-16
2026-03-31	$234,109	303	-71.9%	Shares	Sole	2026-04-24
2021-12-31	$680,777	1,078	0.0%	Shares	Sole	2022-01-18
2021-09-30	$652,383	1,078	+9.7%	Shares	Sole	2021-10-13
2021-06-30	$549,044	983	—	Shares	Sole	2021-07-21
No filing history on record for this holder in this stock.