| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MONAGLE DJ III | Group President | 622 THIRD AVENUE, NEW YORK | /s/ Timothy Jordan for DJ Monagle III | 22 Jan 2026 | 0001422965 |
| 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) | Award | $0 | +12,504 | +58% | $0.000000 | 34,088 | 20 Jan 2026 | Common Stock | 12,504 | Direct | F1, F2 | |
| transaction | MTX | Employee Stock Option (Right to Buy) | Award | $0 | +10,739 | $0.000000 | 10,739 | 20 Jan 2026 | Common Stock | 10,739 | $66.23 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Each DRSU is the economic equivalent of one share of Minerals Technologies Inc. Common Stock. |
| F2 | The DRSUs were granted on January 20, 2026 and vest in three equal annual installments beginning on January 20, 2027. |
| F3 | These options were granted on January 20, 2026 and vest in three equal annual installments beginning on January 20, 2027. |