Insider · CIK 0001408736
Douglas T Dietrich
ceochairofficerdirector
Files at KMT (KENNAMETAL INC), MTX (MINERALS TECHNOLOGIES INC). First filing May 1, 2025, latest May 1, 2025.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
1 / 0
$103k bought, $0 sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MTX: MINERALS TECHNOLOGIES INC
MTXOct 9, 2026 · close 63.60
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 68Notable | MINERALS TECHNOLOGIES INC | $103k 2,000 shares | +1% | +1% from low-39% from high |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Feb 24, 2026 | KMT KENNAMETAL INC | AGrant or award Stock Creditsderivative | +642 | $40.10 | $26k | 10,603 | Feb 26, 2026 |
| Jan 30, 2026 | KMT KENNAMETAL INC | MOption exercise Common Stock | +841 | $34.39 | $29k | 841 | Feb 3, 2026 |
| Jan 30, 2026 | KMT KENNAMETAL INC | FTax withholding Common Stock | -25 | $34.39 | $860 | 816 | Feb 3, 2026 |
| Jan 30, 2026 | KMT KENNAMETAL INC | MOption exercise Restricted Stock Unitsderivative | -841 | $0.00 | $0 | 1,682 | Feb 3, 2026 |
| Jan 23, 2026 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Common Stock | +11,016 | $0.00 | $0 | 177,094 | Jan 27, 2026 |
| Jan 23, 2026 | MTX MINERALS TECHNOLOGIES INC | FTax withholding Common Stock | -6,092 | $68.77 | $419k | 171,002 | Jan 27, 2026 |
| Jan 26, 2026 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Common Stock | +11,123 | $0.00 | $0 | 182,125 | Jan 27, 2026 |
| Jan 26, 2026 | MTX MINERALS TECHNOLOGIES INC | FTax withholding Common Stock | -6,152 | $68.89 | $424k | 175,973 | Jan 27, 2026 |
| Jan 23, 2026 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Deferred Restricted Stock Units (DRSUs)derivative | -11,016 | $0.00 | $0 | 81,204 | Jan 27, 2026 |
| Jan 26, 2026 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Deferred Restricted Stock Units (DRSUs)derivative | -11,123 | $0.00 | $0 | 70,081 | Jan 27, 2026 |
| Jan 21, 2026 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Common Stock | +10,033 | $0.00 | $0 | 171,708 | Jan 23, 2026 |
| Jan 21, 2026 | MTX MINERALS TECHNOLOGIES INC | FTax withholding Common Stock | -5,630 | $66.92 | $377k | 166,078 | Jan 23, 2026 |
| Jan 21, 2026 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Deferred Restricted Stock Units (DRSUs)derivative | -10,033 | $0.00 | $0 | 92,220 | Jan 23, 2026 |
| Jan 20, 2026 | MTX MINERALS TECHNOLOGIES INC | AGrant or award Deferred Restricted Stock Units (DRSUs)derivative | +39,000 | $0.00 | $0 | 102,253 | Jan 22, 2026 |
| Jan 20, 2026 | MTX MINERALS TECHNOLOGIES INC | AGrant or award Employee Stock Option (Right to Buy)derivative | +33,494 | $0.00 | $0 | 33,494 | Jan 22, 2026 |
| Nov 24, 2025 | KMT KENNAMETAL INC | AGrant or award Stock Creditsderivative | +893 | $27.12 | $24k | 9,658 | Nov 25, 2025 |
| Aug 26, 2025 | KMT KENNAMETAL INC | AGrant or award Stock Creditsderivative | +991 | $21.44 | $21k | 8,596 | Aug 27, 2025 |
| Aug 15, 2025 | KMT KENNAMETAL INC | AGrant or award Stock Creditsderivative | +6,898 | $0.00 | $0 | 6,898 | Aug 18, 2025 |
| May 27, 2025 | KMT KENNAMETAL INC | AGrant or award Stock Creditsderivative | +977 | $21.74 | $21k | 1,619 | May 29, 2025 |
| Apr 30, 2025 | MTX MINERALS TECHNOLOGIES INC | POpen-market purchase COMMON STOCK | +2,000 | $51.56 | $103k | 161,675 | May 1, 2025 |
| Feb 25, 2025 | KMT KENNAMETAL INC | AGrant or award Stock Creditsderivative | +635 | $22.30 | $14k | 635 | Feb 27, 2025 |
| Feb 1, 2025 | KMT KENNAMETAL INC | AGrant or award Restricted Stock Unitsderivative | +2,523 | $0.00 | $0 | 2,523 | Feb 3, 2025 |
| Jan 27, 2025 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Common Stock | +9,549 | $0.00 | $0 | 164,956 | Jan 29, 2025 |
| Jan 27, 2025 | MTX MINERALS TECHNOLOGIES INC | FTax withholding Common Stock | -5,281 | $76.19 | $402k | 159,675 | Jan 29, 2025 |
| Jan 27, 2025 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Deferred Restricted Stock Units (DRSUs)derivative | -9,549 | $0.00 | $0 | 63,253 | Jan 29, 2025 |
| Jan 24, 2025 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Common Stock | +11,124 | $0.00 | $0 | 161,559 | Jan 28, 2025 |
| Jan 24, 2025 | MTX MINERALS TECHNOLOGIES INC | FTax withholding Common Stock | -6,152 | $75.68 | $466k | 155,407 | Jan 28, 2025 |
| Jan 24, 2025 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Deferred Restricted Stock Units (DRSUs)derivative | -11,124 | $0.00 | $0 | 72,802 | Jan 28, 2025 |
| Jan 23, 2025 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Common Stock | +11,017 | $0.00 | $0 | 156,564 | Jan 27, 2025 |
| Jan 23, 2025 | MTX MINERALS TECHNOLOGIES INC | FTax withholding Common Stock | -6,129 | $75.65 | $464k | 150,435 | Jan 27, 2025 |
| Jan 23, 2025 | MTX MINERALS TECHNOLOGIES INC | MOption exercise Deferred Restricted Stock Units (DRSUs)derivative | -11,017 | $0.00 | $0 | 83,926 | Jan 27, 2025 |
| Jan 21, 2025 | MTX MINERALS TECHNOLOGIES INC | AGrant or award Deferred Restricted Stock Units (DRSUs)derivative | +30,098 | $0.00 | $0 | 94,943 | Jan 23, 2025 |
| Jan 21, 2025 | MTX MINERALS TECHNOLOGIES INC | AGrant or award Employee Stock Option (Right to Buy)derivative | +25,848 | $0.00 | $0 | 25,848 | Jan 23, 2025 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.