CASTLEARK MANAGEMENT LLC

Position in CRL — Charles River Laboratories International, Inc.

CIK 1106832 CHICAGO, IL

Position in CRL

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$8,174,645

+$1,372,108 QoQ

Shares Held

36,045

-8.6% QoQ

Ownership

0.076%

of shares outstanding

% of Portfolio

0.25%

of 13F equity value

Holder Rank

#110

of 564 holders

Holding Since

Mar 2020

7 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

CASTLEARK MANAGEMENT LLC holds $31,877,319 across 5 Diagnostics & Research names. CRL ranks #2 (25.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	GH	Guardant Health, Inc.	80,293	$12,046,358
2	CRL	Charles River Laboratories International, Inc. This page	36,045	$8,174,645
3	DGX	Quest Diagnostics Inc	31,480	$6,672,186
4	VCYT	Veracyte, Inc.	72,016	$4,229,499
5	NTRA	Natera, Inc.	2,780	$754,631

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$8,174,645	36,045	-8.6%	Shares	Sole	2026-08-14
2026-03-31	$6,802,537	39,435	+22.3%	Shares	Sole	2026-05-15
2025-12-31	$6,432,232	32,245	+3.1%	Shares	Sole	2026-02-13
2025-09-30	$4,891,721	31,265	+640.9%	Shares	Sole	2025-11-17
2022-12-31	$919,538	4,220	-89.4%	Shares	Sole	2023-02-10
2020-06-30	$6,916,464	39,670	-23.6%	Shares	Sole	2020-08-14
2020-03-31	$6,552,823	51,920	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.