| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Vijayvargiya Jugal K. | President and CEO, Director | 6070 PARKLAND BLVD., MAYFIELD HEIGHTS | /s/Michelle R. Mekinda, as Attorney-In-Fact | 19 Feb 2026 | 0001541300 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTRN | Common Stock | Options Exercise | $1,872,713 | +32,122 | +25% | $58.30 | 162,375 | 17 Feb 2026 | Direct | |
| transaction | MTRN | Common Stock | Tax liability | $2,908,049 | -19,159 | -12% | $151.78 | 143,216 | 17 Feb 2026 | Direct | |
| transaction | MTRN | Common Stock | Sale | $230,978 | -1,575 | -1.1% | $146.65 | 141,641 | 17 Feb 2026 | Direct | F1, F2 |
| transaction | MTRN | Common Stock | Sale | $403,939 | -2,740 | -1.9% | $147.42 | 138,901 | 17 Feb 2026 | Direct | F2, F3 |
| transaction | MTRN | Common Stock | Sale | $779,652 | -5,254 | -3.8% | $148.39 | 133,647 | 17 Feb 2026 | Direct | F2, F4 |
| transaction | MTRN | Common Stock | Sale | $132,091 | -883 | -0.66% | $149.59 | 132,764 | 17 Feb 2026 | Direct | F2, F5 |
| transaction | MTRN | Common Stock | Sale | $180,168 | -1,200 | -0.9% | $150.14 | 131,564 | 17 Feb 2026 | Direct | F2, F6 |
| transaction | MTRN | Common Stock | Sale | $198,898 | -1,311 | -1% | $151.72 | 130,253 | 17 Feb 2026 | Direct | F2, F7 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTRN | Stock Appreciation Rights | Options Exercise | $0 | -32,122 | -100% | $0.000000 | 0 | 17 Feb 2026 | Common Stock | 32,122 | $58.30 | Direct | F8 |
| 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 $145.990 to $146.975, 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), (3), (4), (5), (6), and (7) 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 $147.040 to $147.950, inclusive. |
| F4 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $148.065 to $148.875, inclusive. |
| F5 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $149.235 to $149.740, inclusive. |
| F6 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $150.025 to $150.465, inclusive. |
| F7 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $151.455 to $151.840, inclusive. |
| F8 | The Stock Appreciation Rights vested in three equal annual installments beginning February 22, 2020. |