마틴 마리에타 머티리얼즈, Inc.
MX ˙ BMV ˙ US5732841060
SecurityMX:MLM / Martin Marietta Materials, Inc.
InstitutionFayez Sarofim & Co
Latest Disclosed Ownership1,550 shares
Latest Disclosed Value $ 912,454
Fayez Sarofim & Co reports 5.59% increase in ownership of MLM / Martin Marietta Materials, Inc.

On May 15, 2026 - Fayez Sarofim & Co filed a 13F-HR form disclosing ownership of 1,550 shares of Martin Marietta Materials, Inc. (MX:MLM) valued at $912,454 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,468 shares of Martin Marietta Materials, Inc.. This represents a change in shares of 5.59% 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 MATERIALS Common Stock 573284106 1,550 82 5.59 912 -0.22 0.0007
2026-02-13 2025-12-31 13F MARTIN MARIETTA MATERIALS Common Stock 573284106 1,468 0 0.00 914 -1.19 0.0022
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 1,468 14 0.96 925 15.91 0.0021
2025-08-14 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,454 14 0.97 798 15.99 0.0019
2025-05-12 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,440 -450 -23.81 689 -29.51 0.0017
2025-02-14 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 1,890 213 12.70 976 8.20 0.0024
2024-11-14 2024-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,677 -658 -28.18 903 -28.70 0.0023
2024-08-14 2024-06-30 13F MARTIN MARIETTA MATLS COM 573284106 2,335 0 0.00 1,265 -11.72 0.0034
2024-05-14 2024-03-31 13F MARTIN MARIETTA MATLS COM 573284106 2,335 0 0.00 1,434 16.50 0.0043
2024-02-15 2023-12-31 13F MARTINMARIETTAMATLSINC COM 573284106 2,335 21 0.91 1,231 29.61 0.0038
2023-11-15 2023-09-30 13F MARTIN MARIETTA MATLS COM 573284106 2,314 1,086 88.44 950 67.67 0.0032
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,228 -210 -14.60 567 10.98 0.0020
2023-05-11 2023-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,438 -18 -1.24 511 3.66 0.0018
2023-02-13 2022-12-31 13F MARTIN MARIETTA MATLS COM 573284106 1,456 0 0.00 492 4.90 0.0018
2022-11-15 2022-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,456 0 0.00 469 7.57 0.0019
2022-08-12 2022-06-30 13F MARTIN MARIETTA MATLS COM 573284106 1,456 36 2.54 436 -20.29 0.0016
2022-05-16 2022-03-31 13F MARTIN MARIETTA MATLS COM 573284106 1,420 200 16.39 547 1.86 0.0017
2022-02-11 2021-12-31 13F MARTIN MARIETTA MATLS COM 573284106 1,220 0 0.00 537 28.78 0.0016
2021-11-15 2021-09-30 13F MARTIN MARIETTA MATLS COM 573284106 1,220 0 0.00 417 -2.80 0.0014
2021-08-13 2021-06-30 13F MartinMariettaMtlsInc COMMON 573284106 1,220 0 0.00 429 4.63 0.0014
2021-05-13 2021-03-31 13F MartinMariettaMtlsInc COMMON 573284106 1,220 14 1.16 410 19.88 0.0015
2021-02-11 2020-12-31 13F MartinMariettaMtlsInc COMMON 573284106 1,206 1,206 342 0.0013
2020-05-12 2020-03-31 13F MartinMariettaMtlsInc COMMON 573284106 0 -1,612 -100.00 0 -100.00
2020-02-14 2019-12-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 451 2.04 0.0022
2019-11-13 2019-09-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 442 19.14 0.0023
2019-08-09 2019-06-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 371 14.51 0.0019
2019-05-14 2019-03-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 324 16.97 0.0017
2019-02-13 2018-12-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 277 -5.46 0.0017
2018-11-14 2018-09-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 293 -18.61 0.0015
2018-08-14 2018-06-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 360 7.78 0.0019
2018-05-10 2018-03-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 334 -6.18 0.0018
2018-02-13 2017-12-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 356 7.23 0.0018
2017-11-08 2017-09-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 332 -7.52 0.0017
2017-08-11 2017-06-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 359 1.99 0.0019
2017-05-12 2017-03-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 352 -1.40 0.0019
2017-02-14 2016-12-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 357 23.53 0.0020
2016-11-21 2016-09-30 13F/A-1 MartinMariettaMtlsInc COMMON 573284106 1,612 60 3.87 289 -3.02 0.0016
2016-11-14 2016-09-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 289
2016-08-10 2016-06-30 13F MartinMariettaMtlsInc COMMON 573284106 1,552 -60 -3.72 298 15.95 0.0016
2016-05-13 2016-03-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 257 16.82 0.0015
2016-02-12 2015-12-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 220 -10.20 0.0013
2015-11-12 2015-09-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 245 7.46 0.0014
2015-08-13 2015-06-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 0 0.00 228 1.33 0.0012
2015-05-12 2015-03-31 13F MartinMariettaMtlsInc COMMON 573284106 1,612 1,612 0.00 225 0.0011
2015-02-13 2014-12-31 13F MartinMariettaMtlsInc COMMON 573284106 0 -1,612 -100.00 0 -100.00
2014-11-14 2014-09-30 13F MartinMariettaMtlsInc COMMON 573284106 1,612 1,612 208 0.0010
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.