Martin Marietta Materials, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionRehmann Capital Advisory Group
Latest Disclosed Ownership373 shares
Latest Disclosed Value $ 219,924
Rehmann Capital Advisory Group reports 1.36% increase in ownership of MLM / Martin Marietta Materials, Inc.

On May 15, 2026 - Rehmann Capital Advisory Group filed a 13F-HR form disclosing ownership of 373 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $219,924 USD as of March 31, 2026. The entity filed a previous 13F-HR on March 4, 2026 disclosing 368 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 1.36% 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)
2026-05-15 2026-03-31 13F MARTIN MARIETTA MATLS COM 573284106 373 5 1.36 220 -4.37 0.0115
2026-03-04 2025-12-31 13F MARTIN MARIETTA MATLS COM 573284106 368 0 0.00 229 -1.29 0.0120
2025-11-13 2025-09-30 13F MARTIN MARIETTA MATLS COM 573284106 368 -30 -7.54 232 6.42 0.0127
2025-07-30 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 398 398 219 0.0132
2025-04-30 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 0 -396 -100.00 0 -100.00
2025-02-14 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 396 0 0.00 205 -4.23 0.0130
2024-11-18 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 396 -2 -0.50 213 -0.93 0.0139
2024-08-12 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 398 -82 -17.08 216 -26.87 0.0155
2024-05-03 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 480 0 0.00 295 23.01 0.0220
2024-02-13 2023-12-31 13F MARTIN MARIETTA MATLS COM 573284106 480 480 240 0.0199
2023-11-14 2023-09-30 13F MARTINMARIETTAMATLSINC COM 573284106 0 -930 -100.00 0 -100.00
2023-08-23 2023-06-30 13F/A-1 MARTINMARIETTAMATLSINC COM 573284106 930 0 0.00 430 30.00 0.0385
2023-08-15 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 930 0 330 0.0311
2023-05-12 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 930 0 0.00 330 5.10 0.0311
2023-02-10 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 930 -2 -0.21 315 4.67 0.0322
2022-11-14 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 932 -57 -5.76 300 1.35 0.0333
2022-08-12 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 989 11 1.12 296 -21.28 0.0326
2022-06-03 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 978 -282 -22.38 377 -32.25 0.0358
2022-03-02 2021-12-31 13F MARTIN MARIETTA MATLS MLM 573284106 1,260 -55 -4.18 555 18.09 0.0516
2021-11-16 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,315 -2,528 -65.78 471 -65.54 0.0446
2021-08-13 2021-06-30 13F MARTIN MARIETTA MATLS COM 573284106 3,843 11 0.29 1,364 5.98 0.1319
2021-05-26 2021-03-31 13F MARTIN MARIETTA MATLS COM 573284106 3,832 19 0.50 1,287 18.95 0.1316
2021-02-19 2020-12-31 13F MARTIN MARIETTA MATLS COM 573284106 3,813 2,842 292.69 1,083 374.56 0.1222
2020-11-19 2020-09-30 13F MARTIN MARIETTA MATLS COM 573284106 971 0 0.00 229 14.00 0.0290
2020-11-20 2020-06-30 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 971 971 201 0.0274
2020-11-20 2020-03-31 13F/A-1 MARTIN MARIETTA MATLS COM 573284106 0 -263 -100.00 0 -100.00
2020-01-02 2019-09-30 13F MARTIN MARIETTA MATLS COM 573284106 263 1 0.38 72 20.00 0.0087
2019-08-27 2019-06-30 13F MARTIN MARIETTA MATLS COM 573284106 262 0 0.00 61 15.38 0.0075
2019-05-22 2019-03-31 13F MARTIN MARIETTA MATLS COM 573284106 262 0 0.00 53 15.56 0.0072
2019-02-12 2018-12-31 13F MARTIN MARIETTA MATLS COM 573284106 262 0 0.00 45 -4.26 0.0068
2018-12-07 2018-09-30 13F/A-1 MARTINMARIETTAMATLSINC COM 573284106 262 -6 -2.24 48 -20.34 0.0066
2018-09-20 2018-06-30 13F MARTIN MARIETTA MATLS COM 573284106 268 -1 -0.37 60 5.36 0.0087
2018-04-24 2018-03-31 13F MARTIN MARIETTA MATLS COM 573284106 269 269 56 0.0087
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.