| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Group President | Senior Vice President
1 company
Dj Monagle III is Group President at MTX. Dj Monagle III's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $5.7M at current prices.
Historically, Dj Monagle III's trades have earned a middling insider score of 65/100 across 7 rated trades. Over a 12-month horizon, 83.3% of those trades were profitable, with an average 12-month return of +15.5%.
The MTX filings lean toward selling, a net 137,023 shares.
Dj Monagle III has 40 Form 4 filings on record from January 2018 to January 2026, all as Group President at Minerals Technologies (MTX), 2018–2026.
The 94 reported transactions were 34 option exercises, 24 tax withholdings, 19 option or other derivative awards and 14 open-market sales, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 10 sales worth about $8.8M.
The largest open-market sale was 23,093 shares of MTX at an average $61.90 on December 29, 2025, about $1.4M.
None of the 4 sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 29, 2025 | MTX Minerals Technologies Inc | Group President | Sale+OE | 23,093 | $61.90 | $1,429,523.67 | -21.5% | +12.9% | - | |
| Jun 24, 2024 | MTX Minerals Technologies Inc | Group President | Sale+OE | 14,229 | $83.63 | $1,189,910.09 | -15.1% | -11.2% | -34.2% | |
| Mar 22, 2024 | MTX Minerals Technologies Inc | Group President | Sale+OE | 1,180 | $74.12 | $87,458.89 | -1.4% | +12.1% | -12.9% | |
| Dec 20, 2023 | MTX Minerals Technologies Inc | Group President | Sale+OE | 14,598 | $68.08 | $993,803.23 | -16.0% | +7.4% | +12.2% | |
| Sep 12, 2022 | MTX Minerals Technologies Inc | Group President | Sale+OE | 19,673 | $63.36 | $1,246,438.00 | -21.4% | -5.0% | -14.2% | |
| Dec 16, 2021 | MTX Minerals Technologies Inc | Group President | Sale+OE | 9,340 | $72.48 | $676,960.73 | -12.1% | -7.5% | -18.8% | |
| Nov 17, 2021 | MTX Minerals Technologies Inc | Group President | Sale+OE | 8,600 | $74.29 | $638,894.86 | -11.3% | -2.9% | -25.3% | |
| Nov 11, 2020 | MTX Minerals Technologies Inc | Group President | Sale+OE | 14,662 | $60.04 | $880,306.48 | -19.4% | - | - | |
| Dec 11, 2019 | MTX Minerals Technologies Inc | Senior Vice President | Sale+OE | 14,194 | $54.82 | $778,065.40 | -21.0% | - | - | |
| Dec 19, 2018 | MTX Minerals Technologies Inc | Senior Vice President | Sale+OE | 17,454 | $49.85 | $870,090.35 | -27.7% | - | - |