Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionPerigon Wealth Management, LLC
Latest Disclosed Ownership7,069 shares
Latest Disclosed Value $ 4,161,503
Perigon Wealth Management, LLC reports 42.49% increase in ownership of MLM / Martin Marietta Materials, Inc.

On April 10, 2026 - Perigon Wealth Management, LLC filed a 13F-HR form disclosing ownership of 7,069 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $4,161,503 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 4,961 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 42.49% 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)
2026-04-10 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 7,069 2,108 42.49 4,162 34.75 0.0755
2026-01-16 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 4,961 266 5.67 3,089 4.36 0.0553
2025-10-17 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 4,695 1,201 34.37 2,959 54.28 0.0603
2025-07-16 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 3,494 117 3.46 1,918 18.84 0.0448
2025-04-23 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,377 -120 -3.43 1,615 -13.09 0.0415
2025-01-22 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 3,497 -198 -5.36 1,858 -6.59 0.0456
2024-10-16 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 3,695 4 0.11 1,989 -0.55 0.0525
2024-08-02 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 3,691 -144 -3.75 2,000 -15.08 0.0579
2024-04-29 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,835 -12 -0.31 2,354 22.67 0.0714
2024-01-29 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 3,847 123 3.30 1,919 25.59 0.0628
2023-10-30 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 3,724 -693 -15.69 1,529 -25.06 0.0619
2023-08-02 2023-06-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 4,417 236 5.64 2,039 37.40 0.0801
2023-08-02 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 4,417 236 2,039 0.0801
2023-05-03 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 4,181 -10 -0.24 1,485 4.80 0.0844
2023-05-01 2022-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 4,191 -977 -18.90 1,417 -14.90 0.0878
2023-02-14 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 4,191 1,417
2022-12-13 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 5,168 -1,347 -20.68 1,664 -14.67 0.1438
2022-08-11 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 6,515 225 3.58 1,950 -19.45 0.1629
2022-05-16 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 6,290 1,908 43.54 2,421 25.44 0.1710
2022-02-11 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 4,382 223 5.36 1,930 35.82 0.1380
2021-11-01 2021-09-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 4,159 542 14.98 1,421 11.71 0.1233
2021-07-19 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 3,617 944 35.32 1,272 41.65 0.1131
2021-05-17 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 2,673 2,574 2,600.00 898 3,107.14 0.0916
2021-01-28 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 99 99 -98.08 28 -98.32 0.0033
2014-02-18 2013-12-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -5,168 -100.00 0 -100.00
2022-11-14 2011-09-30 13F MARTIN MARIETTA MATLS COM 573284106 5,168 5,168 1,664 0.1438
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.