| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Keohane Sean D | President and CEO, Director | C/O CABOT CORPORATION, TWO SEAPORT LANE, SUITE 1400, BOSTON | By: Jennifer Lombardi, pursuant to a power of attorney from Sean D. Keohane | 15 Sep 2025 | 0001435737 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBT | Phantom Stock Units | Award | $19.7K | +242 | +0.55% | $81.47 | 44K | 11 Sep 2025 | Common Stock | 242 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | 1 for 1 |
| F2 | Represents dividends paid on phantom stock units acquired under the Corporation's Supplemental 401(k) Plan and are to be settled upon the reporting person's retirement or other termination of employment. |