According to recent filings covering the 90 days ending January 13, 2026, the three most significant insider holders at Minerals Technologies are Chairman And Ceo Douglas T Dietrich (161.68K shares), Group President Dj Iii Monagle (84.35K shares), Senior Vice President Thomas J Meek (83.85K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Douglas T Dietrich | Chairman And Ceo | 161,675 | 01 May, 2025 |
| Dj Iii Monagle | Group President | 84,349 | 31 Dec, 2025 |
| Thomas J Meek | Senior Vice President | 83,852 | 05 Dec, 2022 |
| Jonathan J Hastings | Senior Vice President | 58,858 | 29 Jan, 2025 |
| Douglas W Mayger | Senior Vice President | 45,744 | 27 Jan, 2023 |
| Michael Cipolla | Vice President | 37,685 | 29 Jan, 2025 |
| Brett Argirakis | Group President | 27,602 | 25 Nov, 2025 |
| Matthew E Garth | Svp And Finance & Treasury And & Cfo | 13,591 | 08 Mar, 2022 |
| Erin Cutler | Vp And Human Resources | 5,781 | 29 Jan, 2025 |
| Timothy Jordan | Vice President | 4,529 | 29 Jan, 2025 |
| Erik Aldag | Svp Finance And Treasury And Cfo | 4,245 | 01 May, 2025 |
| Kristina M Johnson | 1,400 | 05 May, 2025 | |
| Rocky Motwani | 1,192 | 17 Jun, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 29 Dec, 2025 | Dj Iii Monagle | Common Stock | A | 23,093 | $38.28 | 107,442 | D | M |
| 29 Dec, 2025 | Dj Iii Monagle | Common Stock | D | 23,093 | $61.90 | 84,349 | D | S |
| 21 Nov, 2025 | Brett Argirakis | Common Stock | D | 6,501 | $58.68 | 27,602 | D | S |
| 21 Nov, 2025 | Brett Argirakis | Common Stock | A | 6,501 | $38.28 | 34,103 | D | M |
| 16 Jun, 2025 | Rocky Motwani | COMMON STOCK | A | 370 | $54.31 | 1,192 | D | P |
| 16 Jun, 2025 | Rocky Motwani | - | - | 1,192 | D | |||
| 02 May, 2025 | Kristina M Johnson | COMMON STOCK | A | 1,000 | $53.79 | 1,400 | D | P |
| 02 May, 2025 | Kristina M Johnson | - | - | 1,400 | D | |||
| 30 Apr, 2025 | Douglas T Dietrich | COMMON STOCK | A | 2,000 | $51.56 | 161,675 | D | P |
| 30 Apr, 2025 | Erik Aldag | COMMON STOCK | A | 1,000 | $50.37 | 4,245 | D | P |
| 30 Apr, 2025 | Erik Aldag | - | - | 4,245 | D | |||
| 27 Jan, 2025 | Michael Cipolla | Common Stock | D | 601 | $76.19 | 37,685 | D | F |
| 27 Jan, 2025 | Michael Cipolla | Common Stock | A | 1,176 | $0.00 | 38,286 | D | M |
| 27 Jan, 2025 | Douglas T Dietrich | Common Stock | A | 9,549 | $0.00 | 164,956 | D | M |
| 27 Jan, 2025 | Douglas T Dietrich | Common Stock | D | 5,281 | $76.19 | 159,675 | D | F |
| 27 Jan, 2025 | Dj Iii Monagle | Common Stock | A | 3,172 | $0.00 | 86,104 | D | M |
| 27 Jan, 2025 | Dj Iii Monagle | Common Stock | D | 1,755 | $76.19 | 84,349 | D | F |
| 27 Jan, 2025 | Jonathan J Hastings | Common Stock | A | 2,804 | $0.00 | 60,078 | D | M |
| 27 Jan, 2025 | Jonathan J Hastings | Common Stock | D | 1,220 | $76.19 | 58,858 | D | F |
| 27 Jan, 2025 | Brett Argirakis | Common Stock | A | 2,169 | $0.00 | 28,546 | D | M |