Martin Marietta Materials, Inc.
US ˙ NYSE ˙ US5732841060

SecurityMLM / Martin Marietta Materials, Inc.
InstitutionOssiam
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Ossiam closes position in MLM / Martin Marietta Materials, Inc.

On February 13, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 0 shares of Martin Marietta Materials, Inc. (US:MLM) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 2,755 shares of Martin Marietta Materials, Inc.. The current value of the position is $0 USD.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-02-13 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -100.00 0
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 2,755 -2,425 -46.81 1,736 -38.94 0.0223
2025-08-13 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 5,180 5,113 7,631.34 2,844 8,784.38 0.0320
2025-05-14 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 67 -19,176 -99.65 32 -99.68 0.0004
2025-02-13 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 19,243 19,015 8,339.91 9,939 8,046.72 0.1716
2024-11-13 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 228 47 25.97 123 24.49 0.0024
2024-08-13 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 181 37 25.69 98 11.36 0.0019
2024-05-13 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 144 -627 -81.32 88 -77.08 0.0015
2024-02-13 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 771 526 214.69 385 284.00 0.0062
2023-11-14 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 245 -686 -73.68 101 -76.69 0.0018
2023-08-11 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 931 371 66.25 430 116.67 0.0077
2023-05-12 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 560 -303 -35.11 199 -31.96 0.0041
2023-02-13 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 863 279 47.77 292 54.79 0.0076
2022-11-14 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 584 569 3,793.33 188 4,600.00 0.0054
2022-08-12 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 15 -1,886 -99.21 4 -99.45 0.0001
2022-05-13 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,901 1,834 2,737.31 732 2,340.00 0.0192
2022-02-14 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 67 41 157.69 30 233.33 0.0008
2021-11-12 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 26 0 0.00 9 0.00 0.0003
2021-08-13 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 26 -2,623 -99.02 9 -98.99 0.0002
2021-05-17 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 2,649 586 28.41 890 51.88 0.0277
2021-02-12 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 2,063 -8,595 -80.64 586 -76.63 0.0204
2020-11-12 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 10,658 9,707 1,020.72 2,508 1,179.59 0.1050
2020-08-13 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 951 -7,300 -88.47 196 -87.44 0.0125
2020-05-14 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 8,251 -5,475 -39.89 1,561 -59.33 0.1062
2020-02-14 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 13,726 2,762 25.19 3,838 27.72 0.2926
2019-11-13 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 10,964 -13,377 -54.96 3,005 -46.35 0.2096
2019-08-13 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 24,341 17,041 233.44 5,601 281.28 0.4360
2019-05-15 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 7,300 7,300 1,469 0.1212
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.