WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in HBM — Hudbay Minerals Inc.

CIK 1644956 CHICAGO, IL

Position in HBM

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$99,536,029

New position

Shares Held

4,215,842

first reported quarter

Ownership

0.949%

of shares outstanding

% of Portfolio

0.30%

of 13F equity value

Holder Rank

#20

of 319 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 92% Shared 0% None 8%

Basic Materials · as of Jun 30, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $178,915,815 across 4 Copper names. HBM ranks #1 (55.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	HBM	Hudbay Minerals Inc. This page	4,215,842	$99,536,029
2	SCCO	Southern Copper Corp/	344,780	$59,368,996
3	ERO	Ero Copper Corp.	439,640	$11,760,370
4	TGB	Trekor Metals Ltd	1,199,189	$8,250,420

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$99,536,029	4,215,842	—	Shares	Sole	2026-08-12
No filing history on record for this holder in this stock.