GILDER GAGNON HOWE & CO LLC

Position in MLM — Martin Marietta Materials Inc

CIK 902464 New York, NY

Position in MLM

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

Position Value

$40,720,761

-$8,191,049 QoQ

Shares Held

69,173

-11.9% QoQ

Ownership

0.115%

of shares outstanding

% of Portfolio

0.50%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

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

Basic Materials · as of Mar 31, 2026

GILDER GAGNON HOWE & CO LLC holds $52,217,099 across 4 Building Materials names. MLM ranks #1 (78.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MLM	Martin Marietta Materials Inc This page	69,173	$40,720,761
2	VMC	Vulcan Materials CO	21,503	$5,855,266
3	JHX	James Hardie Industries plc	208,757	$3,953,857
4	KNF	Knife River Corp	20,664	$1,687,215

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$40,720,761	69,173	-11.9%	Shares	Sole	2026-05-15
2025-12-31	$48,911,810	78,553	+0.1%	Shares	Sole	2026-02-17
2025-09-30	$49,442,944	78,446	-1.4%	Shares	Sole	2025-11-14
2025-06-30	$43,683,492	79,575	+5.1%	Shares	Sole	2025-08-14
2025-03-31	$36,195,875	75,703	+13.7%	Shares	Sole	2025-05-15
2024-12-31	$34,384,438	66,572	+5.2%	Shares	Sole	2025-02-14
2024-09-30	$34,076,069	63,309	+16.5%	Shares	Sole	2024-11-14
2024-06-30	$29,434,910	54,328	-5.5%	Shares	Sole	2024-08-14
2024-03-31	$35,290,499	57,482	-5.8%	Shares	Sole	2024-05-15
2023-12-31	$30,458,455	61,050	-7.1%	Shares	Sole	2024-02-14
2023-09-30	$26,965,662	65,693	-1.1%	Shares	Sole	2023-11-14
2023-06-30	$30,672,375	66,435	-14.6%	Shares	Defined	2023-08-14
2023-03-31	$27,607,690	77,755	-0.1%	Shares	Defined	2023-05-15
2022-12-31	$26,307,922	77,841	-0.5%	Shares	Defined	2023-02-14
2022-09-30	$25,208,695	78,266	-1.1%	Shares	Defined	2022-11-14
2022-06-30	$23,691,429	79,172	-6.5%	Shares	Defined	2022-08-15
2022-03-31	$32,578,629	84,644	-2.5%	Shares	Defined	2022-05-16
2021-12-31	$38,250,792	86,831	-0.6%	Shares	Defined	2022-02-14
2021-09-30	$29,848,823	87,359	-1.1%	Shares	Defined	2021-11-15
2021-06-30	$31,065,526	88,302	-3.3%	Shares	Defined	2021-08-16
2021-03-31	$30,661,373	91,303	-4.2%	Shares	Defined	2021-05-17
2020-12-31	$27,059,217	95,289	-12.8%	Shares	Defined	2021-02-16
2020-09-30	$25,733,791	109,338	-4.2%	Shares	Defined	2020-11-16
2020-06-30	$23,567,777	114,091	-69.8%	Shares	Defined	2020-08-14
2020-03-31	$71,395,343	377,294	—	Shares	Defined	2020-05-15
No filing history on record for this holder in this stock.