Minerals Technologies Insider Trades
NYSE: MTXBasic MaterialsMajor ChemicalsUSD
Market open · Delayed 15 min · as of Oct 9, 3:50 PM ET
Last 12 months
- Purchases
- 0 · $0
- Sales
- 2 · $2.24M
- Shares bought / sold
- 0 / 27.57K
- Net activity
- Net selling $2.2 million
Minerals Technologies insider activity
Over the last 12 months, Minerals Technologies insiders reported 19 transactions on SEC Form 4: 0 open-market purchases and 2 sales. Insiders bought $0 and sold $2.2 million worth of stock, for net insider selling of $2.2 million. The largest seller was DIETRICH DOUGLAS T, with $1.8 million in reported sales.
The most recent filing shows DIETRICH DOUGLAS T (CHAIRMAN AND CEO) reporting a transaction in 21,568 shares at $78.03 on May 14, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put MTX's ownership changes in context.
Summary generated from market data by MetaCap's automated system. Methodology
MTX insider transactions
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 14, 2026 | DIETRICH DOUGLAS TCHAIRMAN AND CEO | Sale | 21,568 | $1.76M | Form 4 |
| May 14, 2026 | DIETRICH DOUGLAS TCHAIRMAN AND CEO | Option exercise | 21,568 | $1.68M | Form 4 |
| May 11, 2026 | JORDAN TIMOTHYVice President | Sale | 6,000 | $481.65K | Form 4 |
| Jan 26, 2026 | CUTLER ERINVP, Human Resources | Tax withholding | 520 | $35.82K | Form 4 |
| Jan 26, 2026 | CUTLER ERINVP, Human Resources | Option exercise | 1,195 | — | Form 4 |
| Jan 26, 2026 | CIPOLLA MICHAELVICE PRESIDENT | Tax withholding | 660 | $45.47K | Form 4 |
| Jan 26, 2026 | CIPOLLA MICHAELVICE PRESIDENT | Option exercise | 1,292 | — | Form 4 |
| Jan 26, 2026 | ARGIRAKIS BRETTGroup President | Tax withholding | 1,163 | $80.12K | Form 4 |
| Jan 26, 2026 | ARGIRAKIS BRETTGroup President | Option exercise | 2,672 | — | Form 4 |
| Jan 26, 2026 | DIETRICH DOUGLAS TCHAIRMAN AND CEO | Tax withholding | 6,152 | $423.81K | Form 4 |
| Jan 26, 2026 | DIETRICH DOUGLAS TCHAIRMAN AND CEO | Option exercise | 11,123 | — | Form 4 |
| Jan 23, 2026 | CUTLER ERINVP, Human Resources | Tax withholding | 608 | $41.81K | Form 4 |
| Jan 23, 2026 | CUTLER ERINVP, Human Resources | Option exercise | 1,276 | — | Form 4 |
| Jan 23, 2026 | CIPOLLA MICHAELVICE PRESIDENT | Tax withholding | 774 | $53.23K | Form 4 |
| Jan 23, 2026 | CIPOLLA MICHAELVICE PRESIDENT | Option exercise | 1,427 | — | Form 4 |
| Jan 23, 2026 | ARGIRAKIS BRETTGroup President | Tax withholding | 1,413 | $97.17K | Form 4 |
| Jan 23, 2026 | ARGIRAKIS BRETTGroup President | Option exercise | 3,247 | — | Form 4 |
| Jan 23, 2026 | DIETRICH DOUGLAS TCHAIRMAN AND CEO | Tax withholding | 6,092 | $418.95K | Form 4 |
| Jan 23, 2026 | DIETRICH DOUGLAS TCHAIRMAN AND CEO | Option exercise | 11,016 | — | Form 4 |
Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4