CASTLEARK MANAGEMENT LLC

Position in NTRA — Natera, Inc.

CIK 1106832 CHICAGO, IL

Position in NTRA

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

Position Value

$754,631

-$5,112,655 QoQ

Shares Held

2,780

-92.0% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#475

of 844 holders

Holding Since

Mar 2020

16 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. NTRA ranks #5 (2.4% 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.	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. This page	2,780	$754,631

16 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$754,631	2,780	-92.0%	Shares	Sole	2026-08-14
2025-06-30	$5,867,286	34,730	-19.9%	Shares	Sole	2025-08-18
2025-03-31	$6,130,123	43,350	+3.1%	Shares	Sole	2025-05-15
2024-12-31	$6,653,349	42,030	-41.1%	Shares	Sole	2025-02-18
2024-09-30	$9,064,230	71,400	-3.5%	Shares	Sole	2024-11-15
2024-06-30	$8,013,460	74,000	-0.8%	Shares	Sole	2024-08-14
2024-03-31	$6,825,659	74,630	+3.7%	Shares	Sole	2024-05-16
2022-09-30	$3,152,849	71,950	-32.0%	Shares	Sole	2022-11-15
2021-12-31	$9,874,965	105,739	-9.2%	Shares	Sole	2022-02-16
2021-09-30	$12,980,419	116,479	+4.4%	Shares	Sole	2021-11-12
2021-06-30	$12,661,887	111,529	-5.2%	Shares	Sole	2021-08-17
2021-03-31	$11,939,987	117,589	-28.7%	Shares	Sole	2021-05-14
2020-12-31	$16,408,758	164,879	-28.3%	Shares	Sole	2021-02-17
2020-09-30	$16,620,906	230,079	-0.3%	Shares	Sole	2020-11-16
2020-06-30	$11,511,926	230,885	+10.0%	Shares	Sole	2020-08-14
2020-03-31	$6,264,926	209,810	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.