Ex-dividend in 3d · $0.84
Martin Marietta
Supplies aggregates, asphalt, concrete and specialty minerals for construction and industrial markets.
$530.45
After-hours close−0.46 (−0.09%)
At close$530.92(+0.44%)
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Breakdown13F · Form 4
Institutions 184.50%Insiders 0.60%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 60.07M · Float 59.61M · 99.3% free float
Institutions13F, as of Jun 30, 2026
1,088 holders · 110.82M shares · 112 new positions · 470 increased · 396 reduced · 114 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 4.69M | 7.81% | +6.7K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 3.93M | 6.54% | +12.3K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 3.20M | 5.32% | +37.0K | Aug 13, 2026 |
| State Street Corp | 3.16M | 5.26% | +282.1K | Aug 7, 2026 |
| Bank of America Corp /DE/ | 2.45M | 4.07% | +47.0K | Aug 14, 2026 |
| FMR LLC | 2.19M | 3.65% | −415.4K | Aug 13, 2026 |
| Principal Financial Group Inc | 2.12M | 3.52% | +22.4K | Aug 4, 2026 |
| Aristotle Capital Management, LLC | 1.83M | 3.05% | −123.5K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Gpi SAincl. LNA Holding SRL, Financiere de Gestions Internationales SCA +1 more | 15.40% | 10.95M | 13D | Aug 24, 2026 ↗ |
| Vanguard Capital Management | 7.47% | 4.51M | 13G | Apr 30, 2026 ↗ |
| Vanguard Portfolio Management | 5.25% | 3.17M | 13G | Apr 29, 2026 ↗ |
| State Street Corporation | 5.20% | 3.16M | 13G | Aug 7, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| LNA Holding SRL | 10 percent owner | 10.95M | 18.24% | Aug 24, 2026 |
| C. Howard Nye | director, officer: Chairman, Pres & CEO | 176.0K | 0.29% | Mar 3, 2026 |
| Roselyn R. Bar | officer: Executive Vice President | 62.6K | 0.10% | Dec 17, 2025 |
| Sue W. Cole | director | 20.4K | 0.03% | May 16, 2025 |
| Laree E. Perez | director | 15.7K | 0.03% | May 18, 2026 |
| Michael J. Petro | officer: SVP and CFO | 15.0K | 0.02% | Aug 4, 2026 |
| Christopher William Samborski | officer: EVP, COO | 13.7K | 0.02% | May 5, 2026 |
| Robert J. Cardin | officer: SVP, Controller & CAO | 12.5K | 0.02% | Feb 25, 2026 |
| John J. Koraleski | director | 8.8K | 0.01% | Mar 2, 2026 |
| Donald A. McCunniff | officer: EVP and CHRO | 7.5K | 0.01% | Mar 3, 2026 |
3 ten-percent owners hold 19.36M shares by Form 4, outside the officers-and-directors figure above · 28 people have not refiled in the last 18 months (552.2K shares), so they are not in the figure above
Latest trades
No open-market trades in the last 12 months.
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. April Delaney · MD06 | Purchase | $15,001 – $50,000 | Jul 24, 2026 | Aug 4, 2026 ↗ | |
| Rep. April Delaney · MD06 | Purchase | $1,001 – $15,000 | Jul 20, 2026 | Aug 4, 2026 ↗ | |
| Rep. April Delaney · MD06 | Purchase | $1,001 – $15,000 | Jul 17, 2026 | Aug 4, 2026 ↗ | |
| Rep. Ro Khanna · CA17 | Purchase | $15,001 – $50,000 | Jun 5, 2026 | Jul 8, 2026 ↗ | |
| Rep. April Delaney · MD06 | Purchase | $1,001 – $15,000 | May 28, 2026 | Jun 8, 2026 ↗ |