| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Chadwick Shelly Marie | Vice President, Finance & CFO | 6070 PARKLAND BLVD., MAYFIELD HTS. | /s/Michelle R. Mekinda, as Attorney-In-Fact | 13 Feb 2026 | 0001688289 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTRN | Common Stock | Award | $0 | +3,554 | +20% | $0.000000 | 21,364 | 12 Feb 2026 | Direct |