| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust | 10%+ Owner | C/O MISTRAS GROUP, 195 CLARKSVILLE ROAD, PRINCETON JUNCTION | /s/ Michael C. Keefe, attorney-in-fact for Stephanie Foglia, Trustee | 10 Sep 2025 | 0001963130 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MG | Common Stock | Gift | $0 | -4,685,578 | -100% | $0.000000 | 0 | 02 Jul 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | This represents the final distribution of the shares in the trust and after which the trust was terminated. |