| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| ARGIRAKIS BRETT | Group President | 622 THIRD AVENUE, NEW YORK | /s/ Timothy J. Jordan for Brett Argirakis | 23 Jan 2026 | 0001695302 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTX | Common Stock | Options Exercise | $0 | +3,112 | +11% | $0.000000 | 30,714 | 21 Jan 2026 | Direct | |
| transaction | MTX | Common Stock | Tax liability | $97,502 | -1,457 | -4.7% | $66.92 | 29,257 | 21 Jan 2026 | Direct | F1 |
| holding | MTX | Common Stock | 2,851 | 21 Jan 2026 | By 401(k) | F2 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTX | Deferred Restricted Stock Units (DRSUs) | Options Exercise | $0 | -3,112 | -10% | $0.000000 | 27,491 | 21 Jan 2026 | Common Stock | 3,112 | Direct | F3, F4 |
| Id | Content |
|---|---|
| F1 | These shares were withheld by Minerals Technologies Inc. to satisfy tax withholding obligations. |
| F2 | The information contained in this report is based on a Plan Statement dated as of January 21, 2026. |
| F3 | Each DRSU is the economic equivalent of one share of Minerals Technologies Inc. Common Stock. |
| F4 | The DRSUs were granted on January 21, 2025, and vest in three equal annual installments beginning on January 21, 2026. |