MTX (Minerals Technologies Inc)
Insider Trading Activity
Every open-market purchase and sale reported by MTX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-09 | JOHN J CARMOLA | Director | A | — | — |
| 2026-09-09 | CAROLYN K PITTMAN | Director | A | — | — |
| 2026-09-09 | ROBERT L CLARK | Director | A | — | — |
| 2026-09-09 | KRISTINA M JOHNSON | Director | A | — | — |
| 2026-09-09 | Joseph C. Breunig | Director | A | — | — |
| 2026-09-09 | MARC E ROBINSON | Director | A | — | — |
| 2026-09-09 | Rocky Motwani | Director | A | — | — |
| 2026-07-02 | CAROLYN K PITTMAN | Director | A | — | — |
| 2026-06-22 | JOHN J CARMOLA | Director | A | — | — |
| 2026-06-22 | Joseph C. Breunig | Director | A | — | — |
| 2026-06-22 | KRISTINA M JOHNSON | Director | A | — | — |
| 2026-06-22 | MARC E ROBINSON | Director | A | — | — |
| 2026-06-22 | ROBERT L CLARK | Director | A | — | — |
| 2026-06-22 | CAROLYN K PITTMAN | Director | A | — | — |
| 2026-06-22 | Rocky Motwani | Director | A | — | — |
| 2026-05-21 | MARC E ROBINSON | Director | A | — | — |
| 2026-05-21 | CAROLYN K PITTMAN | Director | A | — | — |
| 2026-05-21 | KRISTINA M JOHNSON | Director | A | — | — |
| 2026-05-21 | Joseph C. Breunig | Director | A | — | — |
| 2026-05-21 | JOHN J CARMOLA | Director | A | — | — |
| 2026-05-21 | Rocky Motwani | Director | A | — | — |
| 2026-05-21 | ROBERT L CLARK | Director | A | — | — |
| 2026-05-18 | DOUGLAS T DIETRICH | CHAIRMAN AND CEO | MIXED | — | — |
| 2026-05-13 | TIMOTHY JORDAN | Vice President | Sell | — | — |
| 2026-04-03 | FRANKLIN FEDER | Director | A | — | — |
| 2026-04-02 | CAROLYN K PITTMAN | Director | A | — | — |
| 2026-03-10 | Rocky Motwani | Director | A | — | — |
| 2026-03-10 | JOHN J CARMOLA | Director | A | — | — |
| 2026-03-10 | MARC E ROBINSON | Director | A | — | — |
| 2026-03-10 | FRANKLIN FEDER | Director | A | — | — |
| 2026-03-10 | Alison Ann Deans | Director | A | — | — |
| 2026-03-10 | ROBERT L CLARK | Director | A | — | — |
| 2026-03-10 | KRISTINA M JOHNSON | Director | A | — | — |
| 2026-03-10 | Joseph C. Breunig | Director | A | — | — |
| 2026-03-10 | CAROLYN K PITTMAN | Director | A | — | — |
| 2026-01-27 | TIMOTHY JORDAN | Vice President | MIXED | — | — |
| 2026-01-27 | MICHAEL CIPOLLA | VICE PRESIDENT | MIXED | — | — |
| 2026-01-27 | DOUGLAS T DIETRICH | CHAIRMAN AND CEO | MIXED | — | — |
| 2026-01-27 | ERIK ALDAG | SVP FINANCE AND TREASURY, CFO | MIXED | — | — |
| 2026-01-27 | BRETT ARGIRAKIS | Group President | MIXED | — | — |
| 2026-01-27 | Jonathan J Hastings | Senior Vice President | MIXED | — | — |
| 2026-01-27 | ERIN CUTLER | VP, Human Resources | MIXED | — | — |
| 2026-01-27 | DJ MONAGLE III | Group President | MIXED | — | — |
| 2026-01-23 | ERIN CUTLER | VP, Human Resources | MIXED | — | — |
| 2026-01-23 | TIMOTHY JORDAN | Vice President | MIXED | — | — |
| 2026-01-23 | DJ MONAGLE III | Group President | MIXED | — | — |
| 2026-01-23 | DOUGLAS T DIETRICH | CHAIRMAN AND CEO | MIXED | — | — |
| 2026-01-23 | BRETT ARGIRAKIS | Group President | MIXED | — | — |
| 2026-01-23 | MICHAEL CIPOLLA | VICE PRESIDENT | MIXED | — | — |
| 2026-01-23 | Jonathan J Hastings | Senior Vice President | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | CEO and Chairman | 308,536 | — |
| — | CHAIRMAN AND CEO | 202,276 | — |
| — | Group President | 88,308 | — |
| — | Senior Vice President | 87,714 | — |
| — | CHAIRMAN, PRESIDENT AND CEO | 71,644 | — |
| — | Senior Vice President | 66,373 | — |
| — | SENIOR VICE PRESIDENT | 66,198 | — |
| — | SENIOR VICE PRESIDENT | 54,344 | — |
| — | VICE PRESIDENT | 49,331 | — |
| — | Senior Vice President | 47,124 | — |
| — | Senior Vice President | 38,314 | — |
| — | Group President | 36,613 | — |
| — | Senior Vice President | 26,866 | — |
| — | Vice President | 23,132 | — |
| — | Vice President | 18,310 | — |
| — | SVP, Finance & Treasury, & CFO | 14,607 | — |
| — | Former Senior Vice President | 14,244 | — |
| — | — | 13,874 | — |
| — | Vice President | 11,990 | — |
| — | Vice President | 11,592 | — |
| — | VP, Human Resources | 8,756 | — |
| — | SVP FINANCE AND TREASURY, CFO | 7,856 | — |
| — | VICE PRESIDENT | 5,165 | — |
| — | Vice President | 4,121 | — |
| — | Director | 3,600 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MTX quote page; the site-wide leaderboard is on the insider transactions hub.