| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTX | Common Stock | Options Exercise | $766,260 | +18,558 | +16% | $41.29 | 134,564 | 08 Sep 2022 | Direct | |
| transaction | MTX | Common Stock | Sale | $978,874 | -16,299 | -12% | $60.06 | 118,265 | 08 Sep 2022 | Direct | F1, F2 |
| holding | MTX | Common Stock | 3,899 | 08 Sep 2022 | By 401(k) | F3 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTX | Employee Stock Option (Right to Buy) | Options Exercise | $0 | -18,558 | -100% | $0.000000* | 0 | 08 Sep 2022 | Common Stock | 18,558 | $41.29 | Direct | F4 |
| Id | Content |
|---|---|
| F1 | Reflects shares sold to pay withholding taxes and costs of options; balance of shares retained by the officer. |
| F2 | Weighted average price representing high of $60.31 and low of $60.00. |
| F3 | The information contained in this report is based on a Plan Statement dated as of September 8, 2022. |
| F4 | The options vested in three equal annual installments beginning on January 22, 2014. |