| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| McLaughlin Erica | Executive Vice President, CFO | C/O CABOT CORPORATION, TWO SEAPORT LANE, SUITE 1400, BOSTON | By: Mazda Cintron, pursuant to a power of attorney from Erica McLaughlin | 2025-10-02 | 0001740348 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBT | Phantom Stock Units | Award | $11.2K | +147 | +1.64% | $76.05 | 9.09K | Sep 30, 2025 | Common Stock | 147 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | 1 for 1 |
| F2 | The reported phantom stock units were acquired under the Corporation's supplemental 401(k) plan and are to be settled upon the reporting person's retirement or other termination of service. |