Petro Michael J (CIK 1878191) reported 9 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-04). Recent activity: Sell MLM (368 shares), Buy MLM (2,960 shares), Sell MLM (211 shares), Sell MLM (94 shares), Buy MLM (931 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-04 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP and CFO | Sell | 368 | $199,555 |
| 2026-03-03 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP and CFO | Buy | 2,960 | $0 |
| 2026-02-25 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP and CFO | Sell | 211 | $144,240 |
| 2026-02-25 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP and CFO | Sell | 94 | $65,504 |
| 2026-02-24 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP and CFO | Buy | 931 | $0 |
| 2026-02-19 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP and CFO | Buy | 1,724 | $0 |
| 2026-02-19 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP and CFO | Sell | 758 | $505,230 |
| 2025-07-09 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP and CFO | Buy | 1,822 | $0 |
| 2025-03-05 | MARTIN MARIETTA MATERIALS INC (MLM) | SVP - Strategy and Development | Buy | 550 | $249,904 |
Source: SEC Form 4 filings · as of 2026-08-04