McCunniff Donald A. (CIK 1355849) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-03). Recent activity: Buy MLM (2,960 shares), Sell MLM (192 shares), Buy MLM (1,277 shares), Sell MLM (50 shares), Buy MLM (1,332 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-03 | MARTIN MARIETTA MATERIALS INC (MLM) | EVP and CHRO | Buy | 2,960 | $0 |
| 2026-02-25 | MARTIN MARIETTA MATERIALS INC (MLM) | EVP and CHRO | Sell | 192 | $131,251 |
| 2026-02-24 | MARTIN MARIETTA MATERIALS INC (MLM) | EVP and CHRO | Buy | 1,277 | $0 |
| 2025-12-17 | MARTIN MARIETTA MATERIALS INC (MLM) | EVP and CHRO | Sell | 50 | $31,474 |
| 2025-03-06 | MARTIN MARIETTA MATERIALS INC (MLM) | EVP and CHRO | Buy | 1,332 | $205,901 |
| 2025-03-06 | MARTIN MARIETTA MATERIALS INC (MLM) | EVP and CHRO | Sell | 1,332 | $632,700 |
Source: SEC Form 4 filings · as of 2026-03-03