| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Chemnitz Gregory R. | VP General Counsel & Secretary | 6070 PARKLAND BLVD., MAYFIELD HEIGHTS | /s/Michelle R. Mekinda, as Attorney-In-Fact | 06 Aug 2025 | 0001519910 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTRN | Common Stock | Sale | $96,067 | -918 | -6.9% | $104.65 | 12,458 | 04 Aug 2025 | Direct | F1, F2 |
| transaction | MTRN | Common Stock | Sale | $219,444 | -2,082 | -17% | $105.40 | 10,376 | 04 Aug 2025 | Direct | F3 |
| holding | MTRN | Common Stock | 5,331 | 04 Aug 2025 | Held in 401(k) Plan |
| Id | Content |
|---|---|
| F1 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $104.2300 to $105.1750, inclusive. |
| F2 | The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (3) of this Form 4. |
| F3 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.2300 to $105.5500, inclusive. |