Martin Marietta Materials, Inc.
US ˙ NYSE ˙ US5732841060

SecurityMLM / Martin Marietta Materials, Inc.
InstitutionSilvercrest Asset Management Group Llc
Latest Disclosed Ownership115,525 shares
Latest Disclosed Value $ 68,007,257
Silvercrest Asset Management Group Llc reports 6.28% decrease in ownership of MLM / Martin Marietta Materials, Inc.

On May 15, 2026 - Silvercrest Asset Management Group Llc filed a 13F-HR form disclosing ownership of 115,525 shares of Martin Marietta Materials, Inc. (US:MLM) valued at $68,007,257 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 123,268 shares of Martin Marietta Materials, Inc.. This represents a change in shares of -6.28% during the quarter. The current value of the position is $67,368,404 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.

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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 INC COM COM 573284106 115,525 -7,743 -6.28 68,007 -11.40 0.4914
2026-02-17 2025-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 123,268 -6,979 -5.36 76,754 -6.50 0.5275
2025-11-14 2025-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 130,247 -5,837 -4.29 82,092 9.89 0.5432
2025-08-14 2025-06-30 13F MARTIN MARIETTA MATLS COM 573284106 136,084 -3,040 -2.19 74,705 12.30 0.5018
2025-05-15 2025-03-31 13F MARTIN MARIETTA MATLS COM 573284106 139,124 11,878 9.33 66,519 1.21 0.4762
2025-02-14 2024-12-31 13F MARTIN MARIETTA MATLS COM 573284106 127,246 4,555 3.71 65,723 -0.48 0.4390
2024-11-14 2024-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 122,691 -2,270 -1.82 66,038 -2.46 0.4493
2024-08-15 2024-06-30 13F/A-1 MARTIN MARIETTA MATLS INC COM COM 573284106 124,961 -1,719 -1.36 67,704 -12.95 0.4644
2024-08-14 2024-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 249,922 123,242 135,408 0.4644
2024-05-15 2024-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 126,680 -2,241 -1.74 77,774 20.92 0.5262
2024-02-14 2023-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 128,921 -6,183 -4.58 64,320 15.98 0.4549
2023-11-14 2023-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 135,104 -4,393 -3.15 55,457 -13.89 0.4210
2023-08-14 2023-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 139,497 4,076 3.01 64,404 33.95 0.4594
2023-05-15 2023-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 135,421 -41,257 -23.35 48,083 -19.48 0.3651
2023-02-14 2022-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 176,678 1,483 0.85 59,712 5.82 0.4590
2022-11-14 2022-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 175,195 -3,746 -2.09 56,429 5.38 0.4641
2022-08-15 2022-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 178,941 -26,746 -13.00 53,546 -32.36 0.4070
2022-05-16 2022-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 205,687 166 0.08 79,167 -12.56 0.5142
2022-02-14 2021-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 205,521 -18,028 -8.06 90,536 18.53 0.5735
2021-11-15 2021-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 223,549 -748 -0.33 76,383 -3.20 0.5149
2021-08-16 2021-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 224,297 -2,849 -1.25 78,910 3.45 0.5175
2021-05-17 2021-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 227,146 12,608 5.88 76,280 25.21 0.5150
2021-02-16 2020-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 214,538 3,646 1.73 60,922 22.74 0.4446
2020-11-16 2020-09-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 210,892 4,735 2.30 49,636 16.55 0.4259
2020-08-14 2020-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 206,157 101,127 96.28 42,586 114.27 0.3777
2020-05-15 2020-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 105,030 50,662 93.18 19,875 30.72 0.2131
2020-02-14 2019-12-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 54,368 54,368 15,204 0.1180
2017-08-14 2017-06-30 13F MARTIN MARIETTA MATLS INC COM COM 573284106 0 -1,600 -100.00 0 -100.00
2017-05-15 2017-03-31 13F MARTIN MARIETTA MATLS INC COM COM 573284106 1,600 1,600 349 0.0037
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.