| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| BEYKO ELENI | SVP - Offshore Energy | C/O GREAT LAKES DREDGE & DOCK CORP., 9811 KATY FREEWAY, SUITE 1200, HOUSTON | /s/Vivienne R. Schiffer, by Power of Attorney | 12 May 2025 | 0001929993 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | GLDD | Common Stock | Award | +25,000 | +50% | 75,138 | 08 May 2025 | Direct | F1 | ||
| transaction | GLDD | Common Stock | Award | +15,000 | +20% | 90,138 | 08 May 2025 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | Represents restricted stock units that vest on December 31, 2025. |
| F2 | Represents restricted stock units that vest on December 31, 2026. |