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| Date | Name | Title | Action | No Shares | Price Per Share |
|---|---|---|---|---|---|
Insider Transactions For MTX | |||||
| 2026-07-01 | Pittman, Carolyn K | Director | Purchased | 99.11 | $0.00 |
| 2026-06-18 | Breunig, Joseph C. | Director | Purchased | 32.84 | $0.00 |
| 2026-06-18 | Carmola, John J | Director | Purchased | 42.58 | $0.00 |
| 2026-06-18 | Clark, Robert L | Director | Purchased | 51.33 | $0.00 |
| 2026-06-18 | Johnson, Kristina M | Director | Purchased | 9.14 | $0.00 |
| 2026-06-18 | Motwani, Rocky | Director | Purchased | 12.35 | $0.00 |
| 2026-06-18 | Pittman, Carolyn K | Director | Purchased | 31.45 | $0.00 |
| 2026-06-18 | Robinson, Marc E | Director | Purchased | 40.99 | $0.00 |
| 2026-05-20 | Breunig, Joseph C. | Director | Purchased | 1908.15 | $0.00 |
| 2026-05-20 | Carmola, John J | Director | Purchased | 1908.15 | $0.00 |
| 2026-05-20 | Clark, Robert L | Director | Purchased | 1908.15 | $0.00 |
| 2026-05-20 | Johnson, Kristina M | Director | Purchased | 1908.15 | $0.00 |
| 2026-05-20 | Motwani, Rocky | Director | Purchased | 1908.15 | $0.00 |
| 2026-05-20 | Pittman, Carolyn K | Director | Purchased | 1908.15 | $0.00 |
| 2026-05-20 | Robinson, Marc E | Director | Purchased | 1908.15 | $0.00 |
| 2026-05-14 | Dietrich, Douglas T | Director, CHAIRMAN AND CEO | Sold | 21568 | $81.53 |
| 2026-05-14 | Dietrich, Douglas T | Director, CHAIRMAN AND CEO | Sold | 21568 | $0.00 |
| 2026-05-14 | Dietrich, Douglas T | Director, CHAIRMAN AND CEO | Purchased | 21568 | $78.03 |
| 2026-05-11 | Jordan, Timothy | Vice President | Sold | 6000 | $80.27 |
| 2026-04-01 | Feder, Franklin | Director | Purchased | 238.87 | $0.00 |
