GRINDSTAFF NICHOLAS M (CIK 1134710) reported 5 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-07-14). Recent activity: Sell STRL (556 shares), Sell STRL (61 shares), Buy STRL (1,029 shares), Buy STRL (5,000 shares), Buy STRL (560 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-14 | STERLING INFRASTRUCTURE, INC. (STRL) | Chief Financial Officer (CFO) | Sell | 556 | $379,353 |
| 2026-01-05 | STERLING INFRASTRUCTURE, INC. (STRL) | Chief Financial Officer (CFO) | Sell | 61 | $18,680 |
| 2026-01-05 | STERLING INFRASTRUCTURE, INC. (STRL) | Chief Financial Officer (CFO) | Buy | 1,029 | $0 |
| 2025-07-10 | STERLING INFRASTRUCTURE, INC. (STRL) | Chief Financial Officer (CFO) | Buy | 5,000 | $0 |
| 2025-07-10 | STERLING INFRASTRUCTURE, INC. (STRL) | Chief Financial Officer (CFO) | Buy | 560 | $0 |
Source: SEC Form 4 filings · as of 2026-07-14