Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionLeavell Investment Management, Inc.
Latest Disclosed Ownership2,921 shares
Latest Disclosed Value $ 1,719,534
Leavell Investment Management, Inc. ownership in MLM / Martin Marietta Materials, Inc.

On May 12, 2026 - Leavell Investment Management, Inc. filed a 13F-HR form disclosing ownership of 2,921 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $1,719,534 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 2,921 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 0.00% 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)
2026-05-12 2026-03-31 13F Martin Mrta.Mats. COM 573284106 2,921 0 0.00 1,720 -5.45 0.0704
2026-02-09 2025-12-31 13F Martin Mrta.Mats. COM 573284106 2,921 6 0.21 1,819 -1.03 0.0757
2025-10-28 2025-09-30 13F Martin Mrta.Mats. COM 573284106 2,915 -1,490 -33.83 1,837 -24.03 0.0775
2025-07-31 2025-06-30 13F Martin Mrta.Mats. COM 573284106 4,405 11 0.25 2,418 15.14 0.1084
2025-04-30 2025-03-31 13F Martin Mrta.Mats. COM 573284106 4,394 -267 -5.73 2,101 -12.75 0.1039
2025-01-29 2024-12-31 13F Martin Mrta.Mats. COM 573284106 4,661 613 15.14 2,407 10.51 0.1180
2024-11-01 2024-09-30 13F Martin Mrta.Mats. COM 573284106 4,048 67 1.68 2,179 108,800.00 0.1086
2024-07-17 2024-06-30 13F Martin Mrta.Mats. COM 573284106 3,981 131 3.40 2 0.00 0.1191
2024-04-24 2024-03-31 13F Martin Mrta.Mats. COM 573284106 3,850 0 0.00 2 100.00 0.1364
2024-01-23 2023-12-31 13F Martin Mrta.Mats. COM 573284106 3,850 0 0.00 2 0.00 0.1221
2023-10-16 2023-09-30 13F Martin Mrta.Mats. COM 573284106 3,850 150 4.05 2 0.00 0.1105
2023-07-19 2023-06-30 13F Martin Mrta.Mats. COM 573284106 3,700 0 0.00 2 0.00 0.1160
2023-04-13 2023-03-31 13F Martin Mrta.Mats. COM 573284106 3,700 129 3.61 1 0.00 0.0937
2023-01-17 2022-12-31 13F Martin Mrta.Mats. COM 573284106 3,571 0 0.00 1 -99.91 0.0906
2022-10-17 2022-09-30 13F Martin Mrta.Mats. COM 573284106 3,571 0 0.00 1,150 7.58 0.0912
2022-07-28 2022-06-30 13F Martin Mrta.Mats. COM 573284106 3,571 0 0.00 1,069 -22.20 0.0818
2022-04-21 2022-03-31 13F Martin Mrta.Mats. COM 573284106 3,571 0 0.00 1,374 -12.65 0.0944
2022-01-20 2021-12-31 13F Martin Mrta.Mats. COM 573284106 3,571 0 0.00 1,573 28.93 0.1046
2021-10-26 2021-09-30 13F Martin Mrta.Mats. COM 573284106 3,571 0 0.00 1,220 1.75 0.0909
2021-07-21 2021-06-30 13F Martin Mrta.Mats. COM 573284106 3,571 0 0.00 1,199 0.00 0.0977
2021-04-15 2021-03-31 13F Martin Mrta.Mats. COM 573284106 3,571 50 1.42 1,199 19.90 0.0977
2021-01-26 2020-12-31 13F Martin Mrta.Mats. COM 573284106 3,521 0 0.00 1,000 20.63 0.0864
2020-10-27 2020-09-30 13F Martin Mrta.Mats. COM 573284106 3,521 0 0.00 829 14.03 0.0720
2020-07-23 2020-06-30 13F Martin Mrta.Mats. COM 573284106 3,521 0 0.00 727 9.16 0.0707
2020-04-16 2020-03-31 13F Martin Mrta.Mats. COM 573284106 3,521 0 0.00 666 -32.39 0.0772
2020-01-22 2019-12-31 13F Martin Mrta.Mats. COM 573284106 3,521 0 0.00 985 2.07 0.0922
2019-10-28 2019-09-30 13F Martin Mrta.Mats. COM 573284106 3,521 0 0.00 965 19.14 0.0990
2019-07-18 2019-06-30 13F Martin Mrta.Mats. COM 573284106 3,521 0 0.00 810 14.41 0.0853
2019-04-16 2019-03-31 13F Martin Mrta.Mats. COM 573284106 3,521 0 0.00 708 17.02 0.0791
2019-01-24 2018-12-31 13F Martin Mrta.Mats. COM 573284106 3,521 21 0.60 605 -5.02 0.0760
2018-10-22 2018-09-30 13F Martin Mrta.Mats. COM 573284106 3,500 0 0.00 637 -18.54 0.0686
2018-07-23 2018-06-30 13F Martin Mrta.Mats. COM 573284106 3,500 0 0.00 782 7.71 0.0888
2018-04-25 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,500 0 0.00 726 -6.20 0.0845
2018-01-11 2017-12-31 13F MARTIN MARIETTA MATLS COM COM 573284106 3,500 0 0.00 774 7.20 0.0912
2017-10-25 2017-09-30 13F MARTIN MARIETTA MATLS COM COM 573284106 3,500 0 0.00 722 -7.32 0.0891
2017-07-13 2017-06-30 13F MARTIN MARIETTA MATLS COM COM 573284106 3,500 0 0.00 779 1.96 0.0987
2017-04-26 2017-03-31 13F MARTIN MARIETTA MATLS COM COM 573284106 3,500 0 0.00 764 -1.42 0.0981
2017-02-22 2016-12-31 13F/A-1 MARTIN MARIETTA MATLS COM COM 573284106 3,500 0 0.00 775 23.60 0.1067
2017-01-30 2016-12-31 13F MARTIN MARIETTA MATLS COM COM 573284106 3,500 775
2016-10-21 2016-09-30 13F MARTIN MARIETTA MATLS COM COM 573284106 3,500 1,000 40.00 627 30.63 0.0924
2016-07-18 2016-06-30 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 480 20.30 0.0708
2016-04-19 2016-03-31 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 399 17.01 0.0598
2016-01-22 2015-12-31 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 341 -10.26 0.0500
2015-10-22 2015-09-30 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 380 7.34 0.0601
2015-07-17 2015-06-30 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 354 1.43 0.0549
2015-04-17 2015-03-31 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 2,500 0.00 349 0.0528
2015-02-03 2014-12-31 13F MARTIN MARIETTA MATLS COM COM 573284106 0 -2,500 -100.00 0 -100.00
2014-10-20 2014-09-30 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 322 -2.42 0.0512
2014-07-17 2014-06-30 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 330 2.80 0.0522
2014-04-25 2014-03-31 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 321 28.40 0.0535
2014-01-15 2013-12-31 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 250 2.04 0.0422
2013-10-15 2013-09-30 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 245 -0.41 0.0441
2013-07-25 2013-06-30 13F MARTIN MARIETTA MATLS COM COM 573284106 2,500 0 0.00 246 16.04 0.0505
2013-08-05 2010-06-30 13F/A-1 MARTIN MARIETTA MATLS COM COM 573284106 2,500 2,500 212 0.0634
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.