Douglas T. Dietrich, CHAIRMAN AND CEO at MINERALS TECHNOLOGIES INC (MTX), sold 21,568 shares at $81.53 ($1.8M) on 2026-05-14, disclosed to the SEC on 2026-05-18.
Open-market sale of $1.8M MTX by CHAIRMAN AND CEO. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| Filing → |
| MTX | SELL | 2023-12-08 | $1.7M | — | Filing → |
| MTX | SELL | 2022-09-12 | $2.0M | — | Filing → |
| MTX | SELL | 2021-02-26 | $2.0M | — | Filing → |