Douglas T Dietrich insider trades: Minerals Technologies (MTX) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Douglas reports to the SEC
Open-market buys and sales
9 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Apr 30, 2025 | MTX | ↑ Buy | 2,000 | $51.56 | $103K | Direct | May 1, 2025 (1d) |
| May 29, 2024 | MTX | ↓ Sell | 36,988 | $84.40 | $3.1M | Direct | May 30, 2024 (1d) |
| Dec 7, 2023 | MTX | ↓ Sell | 13,662 | $63.40 | $866K | Direct | Dec 8, 2023 (1d) |
| Sep 8, 2022 | MTX | ↓ Sell | 16,299 | $60.06 | $979K | Direct | Sep 12, 2022 (4d) |
| Feb 25, 2021 | MTX | ↓ Sell | 13,615 | $72.48 | $987K | Direct | Feb 26, 2021 (1d) |
| Nov 9, 2020 | MTX | ↓ Sell | 11,856 | $61.46 | $729K | Direct | Nov 10, 2020 (1d) |
| Mar 27, 2020 | MTX | ↑ Buy | 1,500 | $32.75 | $49K | Direct | Mar 30, 2020 (3d) |
| Aug 29, 2019 | MTX | ↑ Buy | 1,500 | $47.99 | $72K | Direct | Sep 3, 2019 (5d) |
| Aug 9, 2016 | MTX | ↓ Sell | 11,080 | $69.21 | $767K | Direct | Aug 10, 2016 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MTX insiders
Open-market trades in the last 12 months
About Douglas T Dietrich's insider trades
Douglas T Dietrich is Chairman and CEO at Minerals Technologies (MTX). Since Aug 9, 2016, Douglas has reported 3 open-market purchases worth $224K and 6 sales worth $7.4M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include option exercises (57 filings), shares withheld for taxes (50 filings), grants and awards (30 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MTX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.