T. Rowe Price Investment Management, Inc.

Position in MLM — Martin Marietta Materials Inc

CIK 1897612 BALTIMORE, MD

Position in MLM

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

Position Value

$369,849,820

-$190,809,600 QoQ

Shares Held

641,321

-32.7% QoQ

Ownership

1.07%

of shares outstanding

% of Portfolio

0.24%

of 13F equity value

Holder Rank

#21

of 1,072 holders

Holding Since

Sep 2022

16 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

T. Rowe Price Investment Management, Inc. holds $477,103,407 across 3 Building Materials names. MLM ranks #1 (77.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MLM	Martin Marietta Materials Inc This page	641,321	$369,849,820
2	KNF	Knife River Corp	1,083,278	$90,616,204
3	VMC	Vulcan Materials CO	56,396	$16,637,383

16 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$369,849,820	641,321	-32.7%	Shares	Sole	2026-08-14
2026-03-31	$560,659,420	952,401	+59.2%	Shares	Sole	2026-05-15
2025-12-31	$372,543,704	598,310	-43.2%	Shares	Sole	2026-02-17
2025-09-30	$664,102,085	1,053,662	-7.7%	Shares	Sole	2025-11-14
2025-06-30	$626,607,098	1,141,444	-6.0%	Shares	Sole	2025-08-14
2025-03-31	$580,661,631	1,214,443	-24.4%	Shares	Sole	2025-05-14
2024-12-31	$829,861,583	1,606,702	-53.6%	Shares	Sole	2025-02-14
2024-09-30	$1,864,472,702	3,463,953	+22.4%	Shares	Sole	2024-11-14
2024-06-30	$1,532,926,117	2,829,321	+11.1%	Shares	Sole	2024-08-14
2024-03-31	$1,563,328,220	2,546,386	+55.4%	Shares	Sole	2024-05-15
2023-12-31	$817,275,447	1,638,122	+0.8%	Shares	Sole	2024-02-14
2023-09-30	$667,231,545	1,625,491	-8.0%	Shares	Sole	2023-11-14
2023-06-30	$816,094,324	1,767,624	+0.3%	Shares	Sole	2023-08-14
2023-03-31	$626,010,901	1,763,113	-0.2%	Shares	Sole	2023-05-15
2022-12-31	$597,064,899	1,766,621	+0.2%	Shares	Sole	2023-02-14
2022-09-30	$567,833,718	1,762,966	—	Shares	Sole	2022-11-14
No filing history on record for this holder in this stock.