T. Rowe Price Investment Management, Inc.

Position in KNF — Knife River Corp

CIK 1897612 BALTIMORE, MD

Position in KNF

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$91,996,116

+$10,543,831 QoQ

Shares Held

1,126,713

-2.7% QoQ

Ownership

1.99%

of shares outstanding

% of Portfolio

0.06%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2024

6 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Basic Materials · as of Mar 31, 2026

T. Rowe Price Investment Management, Inc. holds $750,350,057 across 4 Building Materials names. KNF ranks #2 (12.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MLM	Martin Marietta Materials Inc	952,401	$560,659,420
2	KNF	Knife River Corp This page	1,126,713	$91,996,116
3	VMC	Vulcan Materials CO	201,945	$54,989,623
4	USLM	United States Lime & Minerals Inc	326,965	$42,704,898

6 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$91,996,116	1,126,713	-2.7%	Shares	Sole	2026-05-15
2025-12-31	$81,452,285	1,157,815	-1.2%	Shares	Sole	2026-02-19
2025-09-30	$90,057,817	1,171,560	-24.4%	Shares	Sole	2025-11-14
2025-06-30	$126,580,289	1,550,469	+47.2%	Shares	Sole	2025-08-14
2025-03-31	$95,025,951	1,053,386	+129.0%	Shares	Sole	2025-05-14
2024-12-31	$46,749,826	459,955	—	Shares	Sole	2025-02-14
No filing history on record for this holder in this stock.