| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Prevost Patrick M. | Director | 6070 PARKLAND BLVD, MAYFIELD HTS. | /s/Michelle R. Mekinda, as Attorney-In-Fact | 07 Oct 2025 | 0001422978 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTRN | Common Stock | Award | $20,529 | +165 | +1% | $124.42 | 15,980 | 06 Oct 2025 | Held In Directors Deferred Comp. Plan |