WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in MLI — Mueller Industries Inc

CIK 1644956 CHICAGO, IL

Position in MLI

as of Mar 31, 2026 · filed May 8, 2026 Compact

Position Value

$116,878,986

+$14,712,382 QoQ

Shares Held

2,109,729

+18.5% QoQ

Ownership

1.91%

of shares outstanding

% of Portfolio

0.39%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2024

6 quarters on record

Voting authority Sole 94.913849124698.ToString("F0")% Shared 0.ToString("F0")% None 5.0861508753019935.ToString("F0")%

Industrials · as of Mar 31, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $296,537,868 across 4 Metal Fabrication names. MLI ranks #2 (39.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CRS	Carpenter Technology Corp	350,896	$138,305,658
2	MLI	Mueller Industries Inc This page	2,109,729	$116,878,986
3	ESAB	ESAB Corp	301,883	$29,180,010
4	CMC	COMMERCIAL METALS Co	198,164	$12,173,214

6 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$116,878,986	2,109,729	+18.5%	Shares	Sole	2026-05-08
2025-12-31	$102,166,604	1,779,906	-10.8%	Shares	Sole	2026-02-09
2025-09-30	$100,850,905	1,994,875	-14.0%	Shares	Sole	2025-11-12
2025-06-30	$92,168,074	2,319,569	-1.5%	Shares	Sole	2025-07-29
2025-03-31	$89,691,815	2,355,971	-7.2%	Shares	Sole	2025-05-09
2024-12-31	$100,687,920	2,537,498	—	Shares	Sole	2025-02-10
No filing history on record for this holder in this stock.