| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| DELGROSSO DOUGLAS G | Director | C/O CABOT CORPORATION, TWO SEAPORT LANE, SUITE 1400, BOSTON | By: Jennifer Lombardi, pursuant to a power of attorney from Doug G. Del Grosso | 12 Jan 2026 | 0001193775 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBT | Common Stock | Award | $0 | +2,298 | +18% | $0.000000 | 15,079 | 08 Jan 2026 | Direct |