Portolan Capital Management, LLC

Position in GH — Guardant Health, Inc.

CIK 1350290 BOSTON, MA

Position in GH

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

Position Value

$2,084,966

+$777,469 QoQ

Shares Held

13,897

-1.8% QoQ

Ownership

0.010%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

#258

of 596 holders

Holding Since

Dec 2025

3 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

Portolan Capital Management, LLC holds $45,511,852 across 5 Diagnostics & Research names. GH ranks #5 (4.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CDNA	CareDx, Inc.	684,805	$19,516,942
2	WGS	GeneDx Holdings Corp.	200,315	$13,751,624
3	CSTL	Castle Biosciences Inc	328,818	$7,842,309
4	NTRA	Natera, Inc.	8,532	$2,316,011
5	GH	Guardant Health, Inc. This page	13,897	$2,084,966

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,084,966	13,897	-1.8%	Shares	Sole	2026-08-14
2026-03-31	$1,307,497	14,155	-86.4%	Shares	Sole	2026-05-15
2025-12-31	$10,631,548	104,088	—	Shares	Sole	2026-02-17
No filing history on record for this holder in this stock.