Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionUs Bancorp \de\
Latest Disclosed Ownership10,582 shares
Latest Disclosed Value $ 6,229,413
Us Bancorp \de\ reports 0.91% increase in ownership of MLM / Martin Marietta Materials, Inc.

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 10,582 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $6,229,413 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 10,487 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 0.91% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 10,582 95 0.91 6,229 -4.59 0.0023
2026-01-30 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 10,487 -176 -1.65 6,530 -2.84 0.0077
2025-11-12 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 10,663 14 0.13 6,721 14.97 0.0080
2025-07-24 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 10,649 697 7.00 5,846 22.85 0.0074
2025-05-08 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 9,952 360 3.75 4,758 -3.96 0.0064
2025-02-05 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 9,592 13 0.14 4,954 -3.92 0.0065
2024-10-28 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 9,579 -243 -2.47 5,156 -3.10 0.0066
2024-08-07 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 9,822 -252 -2.50 5,322 -13.97 0.0073
2024-05-08 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 10,074 53 0.53 6,185 23.72 0.0086
2024-02-09 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 10,021 84 0.85 5,000 22.55 0.0074
2023-11-03 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 9,937 207 2.13 4,079 -9.19 0.0067
2023-08-10 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 9,730 -610 -5.90 4,492 22.36 0.0072
2023-05-09 2023-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 10,340 188 1.85 3,671 7.00 0.0062
2023-02-13 2022-12-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 10,152 -513 -4.81 3,431 -0.09 0.0061
2022-10-27 2022-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 10,665 59 0.56 3,434 8.19 0.0071
2022-08-01 2022-06-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 10,606 -21 -0.20 3,174 -22.40 0.0062
2022-05-11 2022-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 10,627 167 1.60 4,090 -11.24 0.0068
2022-02-11 2021-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 10,460 -299 -2.78 4,608 25.39 0.0073
2021-11-10 2021-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 10,759 -889 -7.63 3,675 -10.34 0.0069
2021-08-05 2021-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 11,648 662 6.03 4,099 11.14 0.0077
2021-04-28 2021-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 10,986 13 0.12 3,688 18.36 0.0075
2021-02-04 2020-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 10,973 -87 -0.79 3,116 19.75 0.0067
2020-11-10 2020-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 11,060 -2,109 -16.01 2,602 -4.34 0.0063
2020-08-07 2020-06-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 13,169 287 2.23 2,720 11.57 0.0071
2020-05-13 2020-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 12,882 2,102 19.50 2,438 -19.14 0.0076
2020-02-04 2019-12-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 10,780 58 0.54 3,015 2.55 0.0077
2019-11-08 2019-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 10,722 -5,920 -35.57 2,940 -23.22 0.0080
2019-08-13 2019-06-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 16,642 -152 -0.91 3,829 13.35 0.0107
2019-05-08 2019-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 16,794 -1,199 -6.66 3,378 9.25 0.0097
2019-02-13 2018-12-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 17,993 2,731 17.89 3,092 11.34 0.0100
2018-10-31 2018-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 15,262 237 1.58 2,777 -17.25 0.0080
2018-08-08 2018-06-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 15,025 -638 -4.07 3,356 3.36 0.0103
2018-05-08 2018-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 15,663 -75 -0.48 3,247 -6.67 0.0100
2018-02-02 2017-12-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 15,738 983 6.66 3,479 14.33 0.0106
2017-11-13 2017-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 14,755 249 1.72 3,043 -5.76 0.0097
2017-07-19 2017-06-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 14,506 -582 -3.86 3,229 -1.94 0.0108
2017-05-03 2017-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 15,088 7 0.05 3,293 -1.44 0.0113
2017-02-08 2016-12-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 15,081 -882 -5.53 3,341 16.86 0.0120
2016-11-04 2016-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 15,963 877 5.81 2,859 -1.31 0.0106
2016-08-10 2016-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 15,086 1,280 9.27 2,897 31.56 0.0110
2016-05-13 2016-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 13,806 -576 -4.01 2,202 12.12 0.0087
2016-02-10 2015-12-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 14,382 -436 -2.94 1,964 -12.79 0.0079
2015-11-16 2015-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 14,818 -11,729 -44.18 2,252 -40.04 0.0094
2015-08-10 2015-06-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 26,547 715 2.77 3,756 4.02 0.0146
2015-05-08 2015-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 25,832 -1,091 -4.05 3,611 21.58 0.0139
2015-02-13 2014-12-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 26,923 627 2.38 2,970 -12.39 0.0115
2014-11-14 2014-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 26,296 -240 -0.90 3,390 -3.25 0.0137
2014-08-14 2014-06-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 26,536 -166 -0.62 3,504 2.25 0.0140
2014-05-14 2014-03-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 26,702 8 0.03 3,427 28.45 0.0140
2014-02-13 2013-12-31 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 26,694 -654 -2.39 2,668 -0.63 0.0108
2013-11-07 2013-09-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 27,348 -127 -0.46 2,685 -0.70 0.0119
2013-08-09 2013-06-30 13F MARTIN MARIETTA MATLS COMMON STOCK 573284106 27,475 27,475 2,704 0.0123
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.