20 insiders reported 78 Form 4 transactions for MARTIN MARIETTA MATERIALS INC (MLM) over the past 18 months (most recent 2026-09-02). Recent activity: LYONS MARTIN J (Director) Buy 68 shares, WAJSGRAS DAVID C (Director) Buy 78 shares, Pike Thomas (Director) Buy 66 shares, Petro Michael J (SVP and CFO) Buy 9,331 shares, Niemann Philipp (Director) Buy 337 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-02 | LYONS MARTIN J | Director | Buy | 68 | $35,272 |
| 2026-09-02 | WAJSGRAS DAVID C | Director | Buy | 78 | $40,459 |
| 2026-09-02 | Pike Thomas | Director | Buy | 66 | $34,234 |
| 2026-09-02 | Petro Michael J | SVP and CFO | Buy | 9,331 | $0 |
| 2026-08-25 | Niemann Philipp | Director | Buy | 337 | $0 |
| 2026-08-04 | Petro Michael J | SVP and CFO | Sell | 368 | $199,555 |
| 2026-06-02 | Pike Thomas | Director | Buy | 59 | $34,317 |
| 2026-06-02 | WAJSGRAS DAVID C | Director | Buy | 69 | $40,133 |
| 2026-06-02 | LYONS MARTIN J | Director | Buy | 61 | $35,480 |
| 2026-05-18 | Pike Thomas | Director | Buy | 313 | $0 |
| 2026-05-18 | SLAGER DONALD W | Director | Buy | 313 | $0 |
| 2026-05-18 | WAJSGRAS DAVID C | Director | Buy | 313 | $0 |
| 2026-05-18 | Ables Dorothy M | Director | Buy | 313 | $0 |
| 2026-05-18 | Foxx Anthony R | Director | Buy | 313 | $0 |
| 2026-05-18 | LYONS MARTIN J | Director | Buy | 313 | $0 |
| 2026-05-18 | PEREZ LAREE E | Director | Buy | 313 | $0 |
| 2026-05-18 | Mack Mary T | Director | Buy | 313 | $0 |
| 2026-05-18 | DELLY GAYLA J | Director | Buy | 313 | $0 |
| 2026-05-05 | Samborski Christopher William | EVP, COO | Buy | 8,101 | $0 |
| 2026-03-03 | McCunniff Donald A. | EVP and CHRO | Buy | 2,960 | $0 |
| 2026-03-03 | Nye C Howard | Chairman, Pres & CEO | Buy | 5,919 | $0 |
| 2026-03-03 | Petro Michael J | SVP and CFO | Buy | 2,960 | $0 |
| 2026-03-03 | Schoen George Frederick | EVP, GC and Corp. Secretary | Buy | 23,673 | $0 |
| 2026-03-02 | Pike Thomas | Director | Buy | 47 | $31,799 |
| 2026-03-02 | WAJSGRAS DAVID C | Director | Buy | 56 | $37,888 |
Source: SEC Form 4 filings · as of 2026-09-02