MARTIN MARIETTA MATERIALS INC (MLM) has 5 SEC Form 4 insider filings on record in the last 90 days. Most recent filing: Sept. 2, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
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| Sept. 2, 2026 filed Sept. 1, 2026 | Petro Michael J SVP and CFO | $0 | 9,331 | +62% | No | |
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| Sept. 2, 2026 filed Aug. 31, 2026 | WAJSGRAS DAVID C Director | $40,459 | 78 | +2% | No | |
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| Sept. 2, 2026 filed Aug. 31, 2026 | Pike Thomas Director | $34,234 | 66 | +1% | No | |
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| Aug. 25, 2026 filed Aug. 21, 2026 | Niemann Philipp Director | $0 | 337 | New | No | |
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| Aug. 4, 2026 filed Aug. 3, 2026 | Petro Michael J SVP and CFO | $199,555 | 368 | −2% | No | |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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