WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in CTRI — Centuri Holdings, Inc.

CIK 1644956 CHICAGO, IL

Position in CTRI

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

Position Value

$24,169,785

+$3,936,405 QoQ

Shares Held

827,449

+3.3% QoQ

Ownership

0.820%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2025

2 quarters on record

Voting authority Sole 69.30239809341724.ToString("F0")% Shared 0.ToString("F0")% None 30.69760190658276.ToString("F0")%

Utilities · as of Mar 31, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $87,981,677 across 4 Utilities - Regulated Gas names. CTRI ranks #3 (27.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	SR	Spire Inc	350,033	$31,691,987
2	NWN	Northwest Natural Holding Co	594,204	$31,623,536
3	CTRI	Centuri Holdings, Inc. This page	827,449	$24,169,785
4	NI	Nisource Inc.	10,638	$496,369

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$24,169,785	827,449	+3.3%	Shares	Sole	2026-05-08
2025-12-31	$20,233,380	801,322	—	Shares	Sole	2026-02-09
No filing history on record for this holder in this stock.