| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| King David Lee | INTERIM PRESIDENT & CEO, Director | C/O PRIMORIS SERVICES CORPORATION, 2300 N. FIELD STREET, SUITE 1900, DALLAS | /s/ Kenneth M. Dodgen, Attorney-in-Fact | 12 Nov 2025 | 0001620715 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | PRIM | Common Stock | Sale | $455,000 | -3,500 | -14% | $130.00 | 21,302 | 10 Nov 2025 | Direct |