Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionCIBC Private Wealth Group, LLC
Latest Disclosed Ownership475,138 shares
Latest Disclosed Value $ 295,849,544
CIBC Private Wealth Group, LLC reports 1.41% decrease in ownership of MLM / Martin Marietta Materials, Inc.

On February 12, 2026 - CIBC Private Wealth Group, LLC filed a 13F-HR form disclosing ownership of 475,138 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $295,849,544 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 24, 2025 disclosing 481,937 shares of Martin Marietta Materials, Inc.. This represents a change in shares of -1.41% 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)
2026-02-12 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 475,138 -6,799 -1.41 295,850 -2.60
2025-11-24 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 481,937 -214,951 -30.84 303,755 -20.60 0.5200
2025-08-12 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 696,888 6,076 0.88 382,564 22.38 0.6834
2025-05-14 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 690,812 217,200 45.86 312,600 27.60 0.6602
2025-02-12 2024-12-31 13F MARTIN MARIETTA M. COM 573284106 473,612 -12,542 -2.58 244,976 -6.38 0.4441
2024-11-13 2024-09-30 13F MARTIN MARIETTA M. COM 573284106 486,154 -275,834 -36.20 261,672 -35.20 0.4689
2024-08-09 2024-06-30 13F MARTIN MARIETTA M. COM 573284106 761,988 -88,826 -10.44 403,839 -21.47 0.7574
2024-05-10 2024-03-31 13F MARTIN MARIETTA M. COM 573284106 850,814 -12,451 -1.44 514,249 19.40 1.0073
2024-02-13 2023-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 863,265 -15,824 -1.80 430,691 19.36 0.9122
2023-11-13 2023-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 879,089 -167,913 -16.04 360,848 -25.35 0.8539
2023-11-21 2023-06-30 13F/A-1 MARTIN MARIETTA MATLS INC COM COM 573284106 1,047,002 1,243 0.12 483,390 52.03 1.0569
2023-08-10 2023-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 1,047,002 1,243 483,390 1.0571
2023-11-21 2023-03-31 13F/A-1 MARTIN MARIETTA MATERIALS COM COM 573284106 1,045,759 -89,479 -7.88 317,959 33.89 0.7039
2023-05-12 2023-03-31 13F MARTIN MARIETTA MATERIALS COM COM 573284106 1,045,759 -89,479 317,959 0.6911
2023-06-01 2022-12-31 13F/A-2 MARTIN MARIETTA MATERIALS COM COM 573284106 1,135,238 43,619 4.00 237,481 -32.46 0.7977
2023-02-14 2022-12-31 13F/A-1 MARTIN MARIETTA MATLS INC COM COM 573284106 1,135,238 43,619 383,676 0.8033
2023-02-13 2022-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 2,262,083 1,170,464 764,516 0.0008
2022-11-15 2022-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 1,091,619 123,508 12.76 351,601 21.37 0.9470
2022-08-03 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 968,111 49,684 5.41 289,698 -18.05 0.7524
2022-05-16 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 918,427 21,364 2.38 353,494 -10.55 0.7716
2022-04-04 2021-12-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 897,063 8,098 0.91 395,174 30.10 0.8195
2022-02-08 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 897,063 8,098 395,174 0.8195
2021-11-12 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 888,965 12,863 1.47 303,741 -1.45 0.7067
2021-08-16 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 876,102 531,722 154.40 308,223 166.51 0.7080
2021-05-12 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 344,380 665 0.19 115,650 18.49 0.2912
2021-02-12 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 343,715 239 0.07 97,605 20.74 0.2580
2020-11-03 2020-09-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 343,476 343,476 80,841 0.2476
2020-08-13 2020-06-30 13F MARTIN MARIETTA MATLS COM 573284106 0 -254,721 -100.00 0 -100.00
2020-05-15 2020-03-31 13F MARTIN MARIETTA MATLS COM 573284106 254,721 -137,113 -34.99 48,201 -56.01 0.2067
2020-01-30 2019-12-31 13F MARTIN MARIETTA MATLS COM 573284106 391,834 148 0.04 109,573 2.06 0.3574
2019-10-16 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 391,686 213,292 119.56 107,361 161.54 0.3776
2019-07-31 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 178,394 178,394 41,050 0.1440
2019-05-10 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -12,242 -100.00 0 -100.00
2019-02-05 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 12,242 -878 -6.69 2,104 -11.86 0.0094
2018-11-14 2018-09-30 13F MARTIN MARIETTA MATLS COM 573284106 13,120 288 2.24 2,387 -16.71 0.0090
2018-08-02 2018-06-30 13F MARTIN MARIETTA MATLS COM 573284106 12,832 117 0.92 2,866 8.77 0.0117
2018-05-17 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 12,715 -565 -4.25 2,635 -10.22 0.0115
2018-02-12 2017-12-31 13F MARTIN MARIETTA MATLS COM 573284106 13,280 0 0.00 2,935 7.16 0.0124
2017-12-21 2017-09-30 13F/A-1 MARTIN MARIETTA MATERIALS COM COM 573284106 13,280 13,280 2,739 0.0125
2017-11-14 2017-09-30 13F MARTIN MARIETTA MATERIALS COM COM 573284106 13,280 2,739 0.0122
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.