Douglas T. Dietrich

Companies

• KennametalBoard member Feb 3, 2025 to now¹
• MINERALS TECHNOLOGIES INCChair Jan 25, 2022 to now²
• MINERALS TECHNOLOGIES INCChief executive officer Jan 18, 2018 to now³
• MINERALS TECHNOLOGIES INCBoard member Sep 3, 2019 to Mar 17, 2021⁴
• MINERALS TECHNOLOGIES INCChief financial officer Jan 29, 2013 to Jan 25, 2017⁵
• MINERALS TECHNOLOGIES INCVice President Aug 7, 2007 to Jan 24, 2013⁶

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• MTMINERALS TECHNOLOGIES INC MTX180,708 shares⁷$11.3M at $62.38May 18, 2026
• Kennametal KMT816 shares⁸$25.2K at $30.83Jan 30, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• May 14, 2026Sold 21,568 shares at $81.53 of MINERALS TECHNOLOGIES INC⁷
• May 14, 2026Exercised options 21,568 shares at $78.03 of MINERALS TECHNOLOGIES INC⁷
• Jan 30, 2026Shares withheld for tax 25 shares at $34.39 of Kennametal⁸
• Jan 30, 2026Exercised options 841 shares at $34.39 of Kennametal⁸
• Jan 26, 2026Shares withheld for tax 6,152 shares at $68.89 of MINERALS TECHNOLOGIES INC⁹
• Jan 26, 2026Exercised options 11,123 shares of MINERALS TECHNOLOGIES INC⁹
• Jan 23, 2026Shares withheld for tax 6,092 shares at $68.77 of MINERALS TECHNOLOGIES INC⁹
• Jan 23, 2026Exercised options 11,016 shares of MINERALS TECHNOLOGIES INC⁹
• Jan 21, 2026Shares withheld for tax 5,630 shares at $66.92 of MINERALS TECHNOLOGIES INC¹⁰
• Jan 21, 2026Exercised options 10,033 shares of MINERALS TECHNOLOGIES INC¹⁰
• Apr 30, 2025Bought 2,000 shares at $51.56 of MINERALS TECHNOLOGIES INC¹¹
• Jan 27, 2025Shares withheld for tax 5,281 shares at $76.19 of MINERALS TECHNOLOGIES INC¹²
• Jan 27, 2025Exercised options 9,549 shares of MINERALS TECHNOLOGIES INC¹²
• Jan 24, 2025Shares withheld for tax 6,152 shares at $75.68 of MINERALS TECHNOLOGIES INC¹³
• Jan 24, 2025Exercised options 11,124 shares of MINERALS TECHNOLOGIES INC¹³
• Jan 23, 2025Shares withheld for tax 6,129 shares at $75.65 of MINERALS TECHNOLOGIES INC¹⁴
• Jan 23, 2025Exercised options 11,017 shares of MINERALS TECHNOLOGIES INC¹⁴
• May 29, 2024Sold 24,978 shares at $84.18 of MINERALS TECHNOLOGIES INC¹⁵
• May 29, 2024Exercised options 22,968 shares at $38.29 of MINERALS TECHNOLOGIES INC¹⁵
• May 29, 2024Exercised options 2,010 shares at $60.19 of MINERALS TECHNOLOGIES INC¹⁵
• May 28, 2024Sold 12,010 shares at $84.85 of MINERALS TECHNOLOGIES INC¹⁵
• May 28, 2024Exercised options 12,010 shares at $60.19 of MINERALS TECHNOLOGIES INC¹⁵
• Jan 26, 2024Shares withheld for tax 5,363 shares at $66.51 of MINERALS TECHNOLOGIES INC¹⁶
• Jan 26, 2024Exercised options 9,697 shares of MINERALS TECHNOLOGIES INC¹⁶
• Jan 25, 2024Shares withheld for tax 5,282 shares at $66.09 of MINERALS TECHNOLOGIES INC¹⁶