Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionFirst American Bank
Latest Disclosed Ownership1,946 shares
Latest Disclosed Value $ 1,145,571
First American Bank reports 0.46% increase in ownership of MLM / Martin Marietta Materials, Inc.

On April 20, 2026 - First American Bank filed a 13F-HR form disclosing ownership of 1,946 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $1,145,571 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 1,937 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 0.46% 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)
2026-04-20 2026-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,946 9 0.46 1,146 -5.06 0.0353
2026-01-20 2025-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,937 0 0.00 1,206 -1.15 0.0731
2025-10-20 2025-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,937 1 0.05 1,221 14.88 0.0767
2025-07-16 2025-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,936 -30 -1.53 1,063 12.98 0.0729
2025-04-22 2025-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,966 25 1.29 940 -6.19 0.0695
2025-02-05 2024-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,941 318 19.59 1,003 14.78 0.0706
2024-10-24 2024-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,623 0 0.00 874 -0.68 0.0628
2024-07-30 2024-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,623 0 0.00 879 -11.75 0.0658
2024-07-31 2024-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,623 0 0.00 996 23.11 0.0753
2024-07-31 2023-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,623 0 0.00 810 21.47 0.0677
2024-07-31 2023-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,623 35 2.20 666 -9.14 0.0602
2024-07-31 2023-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,588 0 0.00 733 30.20 0.0635
2024-07-31 2023-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,588 0 0.00 564 5.04 0.0517
2024-07-31 2022-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,588 0 0.00 537 4.89 0.0515
2024-07-31 2022-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,588 0 0.00 511 7.58 0.0534
2024-07-31 2022-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,588 -35 -2.16 475 -23.88 0.0484
2024-07-31 2022-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,623 -22 -1.34 625 -13.93 0.0529
2022-02-07 2021-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,645 0 0.00 725 29.00 0.0383
2021-10-28 2021-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,645 -40 -2.37 562 -5.23 0.0325
2021-07-13 2021-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,685 -75 -4.26 593 0.34 0.0345
2021-04-08 2021-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,760 0 0.00 591 18.20 0.0371
2021-01-06 2020-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,760 0 0.00 500 20.77 0.0334
2020-10-09 2020-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,760 0 0.00 414 13.74 0.0245
2020-07-13 2020-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,760 0 0.00 364 9.31 0.0229
2020-04-07 2020-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,760 0 0.00 333 -32.32 0.0248
2020-01-24 2019-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,760 -80 -4.35 492 16.31 0.0308
2019-07-19 2019-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,840 0 0.00 423 14.32 0.0290
2019-04-02 2019-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,840 -5 -0.27 370 16.72 0.0267
2019-01-18 2018-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 1,845 -615 -25.00 317 -29.24 0.0248
2018-10-16 2018-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 2,460 5 0.20 448 -11.98 0.0308
2018-04-18 2018-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 2,455 -540 -18.03 509 -23.11 0.0385
2018-01-23 2017-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 2,995 -425 -12.43 662 -6.10 0.0503
2017-10-06 2017-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 3,420 -450 -11.63 705 -18.12 0.0536
2017-07-10 2017-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 3,870 0 0.00 861 1.89 0.0684
2017-04-11 2017-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 3,870 -6,610 -63.07 845 -63.61 0.0687
2017-01-20 2016-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 10,480 -175 -1.64 2,322 21.70 0.1954
2016-10-06 2016-09-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 10,655 50 0.47 1,908 -6.29 0.1749
2016-07-20 2016-06-30 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 10,605 -5,200 -32.90 2,036 -19.24 0.1958
2016-04-06 2016-03-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 15,805 -21,795 -57.97 2,521 -50.91 0.2499
2016-01-14 2015-12-31 13F MARTIN MARIETTA MATERIALS COMMON STOCK 573284106 37,600 37,600 5,135 0.5210
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.