| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Vahaviolos Aspasia Felice | 10%+ Owner | C/O MISTRAS GROUP, 195 CLARKSVILLE ROAD, PRINCETON JUNCTION | /s/ Michael C. Keefe, attorney-in-fact for Aspasia Vahaviolos | 10 Sep 2025 | 0002082296 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MG | Common Stock | Will/Inheritance | $0 | +2,217,087 | +57% | $0.000000 | 6,105,650 | 02 Jul 2025 | Direct |