| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Kalita Karen A | SVP and General Counsel | C/O CABOT CORPORATION, TWO SEAPORT LANE, SUITE 1400, BOSTON | By: Jennifer Lombardi, pursuant to a power of attorney from Karen A. Kalita | 21 Nov 2025 | 0001778734 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBT | Common Stock | Award | $0 | +4,518 | +12% | $0.000000 | 42,030 | 19 Nov 2025 | Direct | |
| transaction | CBT | Common Stock | Award | $0 | +4,084 | +9.7% | $0.000000 | 46,114 | 19 Nov 2025 | Direct | F1 |
| transaction | CBT | Common Stock | Tax liability | $52,111 | -872 | -1.9% | $59.76 | 45,242 | 19 Nov 2025 | Direct | |
| holding | CBT | Common Stock | 577 | 19 Nov 2025 | Through the Trustee for the Corporation's 401(k) Plan |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBT | Employee Stock Option (Right to Buy) | Award | $0 | +16,908 | $0.000000 | 16,908 | 19 Nov 2025 | Common Stock | 16,908 | $59.76 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | Consists of performance based units earned on the basis of the Corporation's performance in fiscal year 2025, of which 2,931 remain subject to time-based vesting. |
| F2 | The option vests over a three year period as follows: 30% on November 19, 2026, 30% on November 19, 2027 and 40% on November 19, 2028. |