Douglas T. Dietrich
Chairman and CEO at Minerals Technologies Inc.
Sits on 2 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 6 years
- Director since
- 2023
6 years of board service in total across 2 boards, counting each seat separately. Longest: Minerals Technologies Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Kennametal Inc. October 27, 202698.0%
-
Kennametal Inc. October 28, 202599.1%
-
Minerals Technologies Inc. May 13, 202597.8%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| May 14, 2026 | Minerals Technologies Inc. | Option exercise | +21,568 | $78.03 | $1,682,951 |
| May 14, 2026 | Minerals Technologies Inc. | Open-market sale | −21,568 | $81.53 | $1,758,439 |
| Jan 30, 2026 | Kennametal Inc. | Option exercise | +841 | $34.39 | $28,922 |
| Jan 30, 2026 | Kennametal Inc. | Shares withheld for tax | −25 | $34.39 | $860 |
| Jan 26, 2026 | Minerals Technologies Inc. | Option exercise | +11,123 | — | — |
| Jan 26, 2026 | Minerals Technologies Inc. | Shares withheld for tax | −6,152 | $68.89 | $423,811 |
| Jan 23, 2026 | Minerals Technologies Inc. | Option exercise | +11,016 | — | — |
| Jan 23, 2026 | Minerals Technologies Inc. | Shares withheld for tax | −6,092 | $68.77 | $418,947 |
| Jan 21, 2026 | Minerals Technologies Inc. | Option exercise | +10,033 | — | — |
| Jan 21, 2026 | Minerals Technologies Inc. | Shares withheld for tax | −5,630 | $66.92 | $376,760 |
| Apr 30, 2025 | Minerals Technologies Inc. | Open-market purchase | +2,000 | $51.56 | $103,120 |
| Jan 27, 2025 | Minerals Technologies Inc. | Option exercise | +9,549 | — | — |
| Jan 27, 2025 | Minerals Technologies Inc. | Shares withheld for tax | −5,281 | $76.19 | $402,359 |
| Jan 24, 2025 | Minerals Technologies Inc. | Option exercise | +11,124 | — | — |
| Jan 24, 2025 | Minerals Technologies Inc. | Shares withheld for tax | −6,152 | $75.68 | $465,583 |
Questions about Douglas T. Dietrich
What boards is Douglas T. Dietrich on?
Douglas T. Dietrich sits on the boards of Kennametal Inc. and Minerals Technologies Inc.
What company is Douglas T. Dietrich the CEO of?
Douglas T. Dietrich is Chairman and CEO of Minerals Technologies Inc.
How long has Douglas T. Dietrich served on boards?
Our records show at least 6 years of board service across 2 boards, the earliest from 2023.
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