🕵️ Martin Marietta Materials Inc ($MLM)
SEC insider & ownership activity, last 12 months · CIK 916076 · every row links its SEC filing
Over the last 12 months insiders sold $637K with no open-market buying against it. Laree E. Perez sold $637K in discretionary trades (Aug). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 1 seller, $637K (1 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Laree E. Perez | 0 | – | 1 | $637K | Aug 8, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Capital Management | 7.5% | 13G | Apr 30, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.2% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Laree E. Perez | $623K | Aug 8, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Jul 10, 2026 | filing ↗ |
| New financial obligation (2.03) | Jul 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 10, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 29, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 27, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jun 27, 2026 | filing ↗ |
| Other events (8.01) | Jun 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 27, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 14, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 14, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 14, 2026 | filing ↗ |
| Earnings (2.02) | Apr 30, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 30, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 27, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | Feb 23, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 23, 2026 | filing ↗ |
| Mine Safety - Reporting of Shutdowns and Patterns of Violations (1.04) | Feb 11, 2026 | filing ↗ |
| Earnings (2.02) | Feb 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 31, 2025 | filing ↗ |
| Material agreement (1.01) | Dec 19, 2025 | filing ↗ |
| New financial obligation (2.03) | Dec 19, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 19, 2025 | filing ↗ |
| Earnings (2.02) | Nov 4, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 4, 2025 | filing ↗ |