Martin Marietta Materials Inc

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC MLM

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/9/2026

Shares

270,203

Value ($000)

168,245

Weight

0.5%

2019 Q4 - 2025 Q4 (25 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/9/2026	168,245	0.5%	270,203	12/31/2025
2025 Q3	11/12/2025	174,812	0.5%	277,356	9/30/2025
2025 Q2	7/29/2025	157,395	0.4%	286,715	6/30/2025
2025 Q1	5/9/2025	139,974	0.4%	292,752	3/31/2025
2024 Q4	2/10/2025	226,331	0.6%	438,202	12/31/2024
2024 Q3	11/8/2024	223,629	0.6%	415,475	9/30/2024
2024 Q2	8/8/2024	203,073	0.5%	374,811	6/30/2024
2024 Q1	5/8/2024	227,903	0.6%	371,213	3/31/2024
2023 Q4	2/9/2024	165,832	0.5%	332,389	12/31/2023
2023 Q3	11/9/2023	82,848	0.3%	201,832	9/30/2023
2023 Q2	8/11/2023	240,109	0.8%	520,066	6/30/2023
2023 Q1	5/12/2023	149,416	0.5%	420,818	3/31/2023
2022 Q4	2/9/2023	169,813	0.6%	502,449	12/31/2022
2022 Q3	11/9/2022	171,510	0.7%	532,490	9/30/2022
2022 Q2	8/10/2022	92,286	0.3%	308,401	6/30/2022
2022 Q1	5/11/2022	121,386	0.4%	315,379	3/31/2022
2021 Q4	2/14/2022	297,621	0.8%	675,613	12/31/2021
2021 Q3	11/10/2021	290,022	0.8%	848,812	9/30/2021
2021 Q2	8/12/2021	340,556	1.1%	968,012	6/30/2021
2021 Q1	5/13/2021	329,887	1.1%	982,332	3/31/2021
2020 Q4	2/9/2021	329,735	1.1%	1,161,160	12/31/2020
2020 Q3	11/6/2020	276,881	1.1%	1,176,415	9/30/2020
2020 Q2	8/12/2020	246,605	1.0%	1,193,809	6/30/2020
2020 Q1	5/8/2020	215,677	1.0%	1,139,759	3/31/2020
2019 Q4	2/12/2020	290,391	1.2%	1,038,447	12/31/2019