Insider Trades78 trades
| Date↓ | Side | Ticker↕ | Insider↕ | Role↕ | Shares↕ | Price↕ | Mkt Cap↕ | 52W High↕ | 52W Low↕ | Value↕ | % Chg↕ | Rule↕ | AI View↕ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 14, 2026 | Sell | MTX | Douglas T Dietrich | CHAIRMAN AND CEO | 43,136 | $79.78 | $2.1B | -18.41% | +27.57% | $3.4M | +0.00% | — | Buy Now |
| May 11, 2026 | Sell | MTX | Timothy Jordan | Vice President | 6,000 | $80.27 | $2.1B | -18.41% | +27.57% | $481.6K | -82.43% | — | Buy Now |
| Jan 23, 2026 | Sell | MTX | Erin Cutler | VP, Human Resources | 1,128 | $68.83 | $2.1B | -18.41% | +27.57% | $77.6K | -3.38% | — | Buy Now |
| Jan 23, 2026 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 1,434 | $68.83 | $2.1B | -18.41% | +27.57% | $98.7K | -1.46% | — | Buy Now |
| Jan 23, 2026 | Sell | MTX | Timothy Jordan | Vice President | 2,039 | $68.83 | $2.1B | -18.41% | +27.57% | $140.3K | -4.71% | — | Buy Now |
| Jan 23, 2026 | Sell | MTX | Erik Aldag | SVP FINANCE AND TREASURY, CFO | 2,259 | $68.82 | $2.1B | -18.41% | +27.57% | $155.5K | -4.73% | — | Buy Now |
| Jan 23, 2026 | Sell | MTX | Brett Argirakis | Group President | 2,576 | $68.82 | $2.1B | -18.41% | +27.57% | $177.3K | -2.30% | — | Buy Now |
| Jan 23, 2026 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 2,681 | $68.83 | $2.1B | -18.41% | +27.57% | $184.5K | -1.80% | — | Buy Now |
| Jan 23, 2026 | Sell | MTX | Dj Iii Monagle | Group President | 4,046 | $68.83 | $2.1B | -18.41% | +27.57% | $278.5K | -1.75% | — | Buy Now |
| Jan 23, 2026 | Sell | MTX | Douglas T Dietrich | CHAIRMAN AND CEO | 12,244 | $68.83 | $2.1B | -18.41% | +27.57% | $842.8K | -2.40% | — | Buy Now |
| Jan 21, 2026 | Sell | MTX | Erin Cutler | VP, Human Resources | 583 | $66.92 | $2.1B | -18.41% | +27.57% | $39.0K | -3.32% | — | Buy Now |
| Jan 21, 2026 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 731 | $66.92 | $2.1B | -18.41% | +27.57% | $48.9K | -1.45% | — | Buy Now |
| Jan 21, 2026 | Sell | MTX | Timothy Jordan | Vice President | 1,071 | $66.92 | $2.1B | -18.41% | +27.57% | $71.7K | -4.60% | — | Buy Now |
| Jan 21, 2026 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 1,318 | $66.92 | $2.1B | -18.41% | +27.57% | $88.2K | -1.72% | — | Buy Now |
| Jan 21, 2026 | Sell | MTX | Erik Aldag | SVP FINANCE AND TREASURY, CFO | 1,356 | $66.92 | $2.1B | -18.41% | +27.57% | $90.7K | -5.24% | — | Buy Now |
| Jan 21, 2026 | Sell | MTX | Brett Argirakis | Group President | 1,457 | $66.92 | $2.1B | -18.41% | +27.57% | $97.5K | -2.50% | — | Buy Now |
| Jan 21, 2026 | Sell | MTX | Dj Iii Monagle | Group President | 2,036 | $66.92 | $2.1B | -18.41% | +27.57% | $136.2K | -1.72% | — | Buy Now |
| Jan 21, 2026 | Sell | MTX | Douglas T Dietrich | CHAIRMAN AND CEO | 5,630 | $66.92 | $2.1B | -18.41% | +27.57% | $376.8K | -2.13% | — | Buy Now |
| Dec 29, 2025 | Sell | MTX | Dj Iii Monagle | Group President | 46,186 | $50.09 | $2.1B | -18.41% | +27.57% | $2.3M | +0.00% | — | Buy Now |
| Nov 21, 2025 | Sell | MTX | Brett Argirakis | Group President | 13,002 | $48.48 | $2.1B | -18.41% | +27.57% | $630.3K | +0.00% | — | Buy Now |
| Apr 30, 2025 | Buy | MTX | Erik Aldag | SVP FINANCE AND TREASURY, CFO | 1,000 | $50.37 | $2.1B | -18.41% | +27.57% | $50.4K | +30.82% | — | Buy Now |
| Apr 30, 2025 | Buy | MTX | Douglas T Dietrich | CHAIRMAN AND CEO | 2,000 | $51.56 | $2.1B | -18.41% | +27.57% | $103.1K | +1.25% | — | Buy Now |
| Jan 27, 2025 | Sell | MTX | Timothy Jordan | Vice President | 127 | $76.19 | $2.1B | -18.41% | +27.57% | $9.7K | -0.78% | — | Buy Now |
| Jan 27, 2025 | Sell | MTX | Erik Aldag | Senior Vice President | 159 | $76.19 | $2.1B | -18.41% | +27.57% | $12.1K | -0.97% | — | Buy Now |
| Jan 27, 2025 | Sell | MTX | Erin Cutler | VP, Human Resources | 395 | $76.19 | $2.1B | -18.41% | +27.57% | $30.1K | -2.93% | — | Buy Now |
| Jan 27, 2025 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 601 | $76.19 | $2.1B | -18.41% | +27.57% | $45.8K | -1.30% | — | Buy Now |
| Jan 27, 2025 | Sell | MTX | Brett Argirakis | Group President | 944 | $76.19 | $2.1B | -18.41% | +27.57% | $71.9K | -2.01% | — | Buy Now |
| Jan 27, 2025 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 1,220 | $76.19 | $2.1B | -18.41% | +27.57% | $93.0K | -1.57% | — | Buy Now |
| Jan 27, 2025 | Sell | MTX | Dj Iii Monagle | Group President | 1,755 | $76.19 | $2.1B | -18.41% | +27.57% | $133.7K | -1.63% | — | Buy Now |
| Jan 27, 2025 | Sell | MTX | Douglas T Dietrich | Chairman and CEO | 5,281 | $76.19 | $2.1B | -18.41% | +27.57% | $402.4K | -2.31% | — | Buy Now |
| Jan 24, 2025 | Sell | MTX | Erin Cutler | VP, Human Resources | 539 | $75.68 | $2.1B | -18.41% | +27.57% | $40.8K | -3.84% | — | Buy Now |
| Jan 24, 2025 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 668 | $75.68 | $2.1B | -18.41% | +27.57% | $50.6K | -1.42% | — | Buy Now |
| Jan 24, 2025 | Sell | MTX | Timothy Jordan | Vice President | 979 | $75.68 | $2.1B | -18.41% | +27.57% | $74.1K | -5.65% | — | Buy Now |
| Jan 24, 2025 | Sell | MTX | Erik Aldag | Senior Vice President | 1,019 | $75.68 | $2.1B | -18.41% | +27.57% | $77.1K | -5.83% | — | Buy Now |
| Jan 24, 2025 | Sell | MTX | Brett Argirakis | Group President | 1,163 | $75.68 | $2.1B | -18.41% | +27.57% | $88.0K | -2.41% | — | Buy Now |
| Jan 24, 2025 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 1,328 | $75.68 | $2.1B | -18.41% | +27.57% | $100.5K | -1.68% | — | Buy Now |
| Jan 24, 2025 | Sell | MTX | Dj Iii Monagle | Group President | 1,947 | $75.68 | $2.1B | -18.41% | +27.57% | $147.3K | -1.78% | — | Buy Now |
| Jan 24, 2025 | Sell | MTX | Douglas T Dietrich | Chairman and CEO | 6,152 | $75.68 | $2.1B | -18.41% | +27.57% | $465.6K | -2.63% | — | Buy Now |
| Jan 23, 2025 | Sell | MTX | Erin Cutler | VP, Human Resources | 432 | $75.65 | $2.1B | -18.41% | +27.57% | $32.7K | -2.99% | — | Buy Now |
| Jan 23, 2025 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 806 | $75.65 | $2.1B | -18.41% | +27.57% | $61.0K | -1.69% | — | Buy Now |
| Jan 23, 2025 | Sell | MTX | Timothy Jordan | Vice President | 819 | $75.65 | $2.1B | -18.41% | +27.57% | $62.0K | -4.51% | — | Buy Now |
| Jan 23, 2025 | Sell | MTX | Erik Aldag | Senior Vice President | 1,322 | $75.65 | $2.1B | -18.41% | +27.57% | $100.0K | -7.03% | — | Buy Now |
| Jan 23, 2025 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 1,425 | $75.65 | $2.1B | -18.41% | +27.57% | $107.8K | -1.77% | — | Buy Now |
| Jan 23, 2025 | Sell | MTX | Brett Argirakis | Group President | 1,482 | $75.65 | $2.1B | -18.41% | +27.57% | $112.1K | -2.98% | — | Buy Now |
| Jan 23, 2025 | Sell | MTX | Dj Iii Monagle | Group President | 2,166 | $75.65 | $2.1B | -18.41% | +27.57% | $163.9K | -1.94% | — | Buy Now |
| Jan 23, 2025 | Sell | MTX | Douglas T Dietrich | Chairman and CEO | 6,129 | $75.65 | $2.1B | -18.41% | +27.57% | $463.7K | -2.55% | — | Buy Now |
| Jun 24, 2024 | Sell | MTX | Dj Iii Monagle | Group President | 28,458 | $71.91 | $2.1B | -18.41% | +27.57% | $2.0M | +0.00% | — | Buy Now |
| Jun 18, 2024 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 43,086 | $70.20 | $2.1B | -18.41% | +27.57% | $3.0M | +0.00% | — | Buy Now |
| Jun 17, 2024 | Buy | MTX | Brett Argirakis | Group President | 4,889 | $71.17 | $2.1B | -18.41% | +27.57% | $347.9K | +0.77% | — | Buy Now |
| Jun 12, 2024 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 17,928 | $70.76 | $2.1B | -18.41% | +27.57% | $1.3M | +0.00% | — | Buy Now |
| Jun 3, 2024 | Buy | MTX | Erin Cutler | VP, Human Resources | 484 | $76.39 | $2.1B | -18.41% | +27.57% | $37.0K | +0.44% | — | Buy Now |
| May 28, 2024 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 23,916 | $65.49 | $2.1B | -18.41% | +27.57% | $1.6M | +0.00% | — | Buy Now |
| May 28, 2024 | Sell | MTX | Douglas T Dietrich | Chairman and CEO | 73,976 | $65.49 | $2.1B | -18.41% | +27.57% | $4.8M | +0.00% | — | Buy Now |
| May 21, 2024 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 15,628 | $71.66 | $2.1B | -18.41% | +27.57% | $1.1M | +0.00% | — | Buy Now |
| May 10, 2024 | Sell | MTX | Dj Iii Monagle | Group President | 1,300 | $79.90 | $2.1B | -18.41% | +27.57% | $103.9K | -1.60% | — | Buy Now |
| Mar 22, 2024 | Sell | MTX | Dj Iii Monagle | Group President | 2,360 | $69.64 | $2.1B | -18.41% | +27.57% | $164.3K | +0.00% | — | Buy Now |
| Feb 20, 2024 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 25,844 | $54.88 | $2.1B | -18.41% | +27.57% | $1.4M | +0.00% | — | Buy Now |
| Jan 25, 2024 | Sell | MTX | Timothy Jordan | Vice President | 174 | $66.29 | $2.1B | -18.41% | +27.57% | $11.5K | -0.69% | — | Buy Now |
| Jan 25, 2024 | Sell | MTX | Erik Aldag | Senior Vice President | 306 | $66.28 | $2.1B | -18.41% | +27.57% | $20.3K | -1.24% | — | Buy Now |
| Jan 25, 2024 | Sell | MTX | Erin Cutler | VP, Human Resources | 523 | $66.26 | $2.1B | -18.41% | +27.57% | $34.7K | -2.33% | — | Buy Now |
| Jan 25, 2024 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 1,392 | $66.32 | $2.1B | -18.41% | +27.57% | $92.3K | -1.04% | — | Buy Now |
| Jan 25, 2024 | Sell | MTX | Brett Argirakis | Group President | 1,818 | $66.29 | $2.1B | -18.41% | +27.57% | $120.5K | -2.20% | — | Buy Now |
| Jan 25, 2024 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 2,388 | $66.29 | $2.1B | -18.41% | +27.57% | $158.3K | -1.62% | — | Buy Now |
| Jan 25, 2024 | Sell | MTX | Dj Iii Monagle | Group President | 3,506 | $66.30 | $2.1B | -18.41% | +27.57% | $232.4K | -1.67% | — | Buy Now |
| Jan 25, 2024 | Sell | MTX | Douglas T Dietrich | Chairman and CEO | 10,645 | $66.30 | $2.1B | -18.41% | +27.57% | $705.8K | -2.44% | — | Buy Now |
| Jan 24, 2024 | Sell | MTX | Erin Cutler | VP, Human Resources | 405 | $66.10 | $2.1B | -18.41% | +27.57% | $26.8K | -3.44% | — | Buy Now |
| Jan 24, 2024 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 732 | $66.10 | $2.1B | -18.41% | +27.57% | $48.4K | -1.59% | — | Buy Now |
| Jan 24, 2024 | Sell | MTX | Timothy Jordan | Vice President | 796 | $66.10 | $2.1B | -18.41% | +27.57% | $52.6K | -5.93% | — | Buy Now |
| Jan 24, 2024 | Sell | MTX | Erik Aldag | Senior Vice President | 1,120 | $66.10 | $2.1B | -18.41% | +27.57% | $74.0K | -8.30% | — | Buy Now |
| Jan 24, 2024 | Sell | MTX | Brett Argirakis | Group President | 1,269 | $66.10 | $2.1B | -18.41% | +27.57% | $83.9K | -2.95% | — | Buy Now |
| Jan 24, 2024 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 1,421 | $66.10 | $2.1B | -18.41% | +27.57% | $93.9K | -1.87% | — | Buy Now |
| Jan 24, 2024 | Sell | MTX | Dj Iii Monagle | Group President | 2,040 | $66.10 | $2.1B | -18.41% | +27.57% | $134.8K | -1.89% | — | Buy Now |
| Jan 24, 2024 | Sell | MTX | Douglas T Dietrich | Chairman and CEO | 6,219 | $66.10 | $2.1B | -18.41% | +27.57% | $411.1K | -2.74% | — | Buy Now |
| Dec 20, 2023 | Sell | MTX | Dj Iii Monagle | Group President | 29,196 | $63.02 | $2.1B | -18.41% | +27.57% | $1.8M | +0.00% | — | Buy Now |
| Dec 14, 2023 | Sell | MTX | Brett Argirakis | Group President | 5,310 | $62.40 | $2.1B | -18.41% | +27.57% | $331.4K | +0.00% | — | Buy Now |
| Dec 7, 2023 | Sell | MTX | Michael Cipolla | VICE PRESIDENT | 9,636 | $60.66 | $2.1B | -18.41% | +27.57% | $584.6K | +0.00% | — | Buy Now |
| Dec 7, 2023 | Buy | MTX | Douglas T Dietrich | Chairman and CEO | 27,598 | $60.66 | $2.1B | -18.41% | +27.57% | $1.7M | +0.10% | — | Buy Now |
| Nov 30, 2023 | Sell | MTX | Jonathan J Hastings | Senior Vice President | 17,920 | $60.20 | $2.1B | -18.41% | +27.57% | $1.1M | +0.00% | — | Buy Now |