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
- 5 years
- Director since
- 2023
5 years of board service in total across 2 boards, counting each seat separately. Longest: Minerals Technologies Inc., 3 years.
Minerals Technologies Inc.
Director · Chairman and CEO
Kennametal Inc.
Director
Chief executive roles
Minerals Technologies Inc.
· Chairman and CEO
Dates unknown
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 |
|---|---|---|---|---|---|
| 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 |
| Jan 23, 2025 | Minerals Technologies Inc. | Option exercise | +11,017 | — | — |
| Jan 23, 2025 | Minerals Technologies Inc. | Shares withheld for tax | −6,129 | $75.65 | $463,659 |
| May 29, 2024 | Minerals Technologies Inc. | Option exercise | +2,010 | $60.19 | $120,982 |
| May 29, 2024 | Minerals Technologies Inc. | Option exercise | +22,968 | $38.29 | $879,445 |
| May 29, 2024 | Minerals Technologies Inc. | Open-market sale | −24,978 | $84.18 | $2,102,648 |
| May 28, 2024 | Minerals Technologies Inc. | Option exercise | +12,010 | $60.19 | $722,882 |
| May 28, 2024 | Minerals Technologies Inc. | Open-market sale | −12,010 | $84.85 | $1,019,049 |
| Jan 26, 2024 | Minerals Technologies Inc. | Option exercise | +9,697 | — | — |
| Jan 26, 2024 | Minerals Technologies Inc. | Shares withheld for tax | −5,363 | $66.51 | $356,693 |
| Jan 25, 2024 | Minerals Technologies Inc. | Option exercise | +9,550 | — | — |
| Jan 25, 2024 | Minerals Technologies Inc. | Shares withheld for tax | −5,282 | $66.09 | $349,087 |
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