| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Zhu Jeff Ji | Executive Vice President | C/O CABOT CORPORATION, TWO SEAPORT LANE, SUITE 1400, BOSTON | By: Jennifer Lombardi, pursuant to a power of attorney from Jeff Ji Zhu | 21 Nov 2025 | 0001791135 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBT | Common Stock | Award | $0 | +6,024 | +8% | $0.000000 | 80,890 | 19 Nov 2025 | Direct | |
| transaction | CBT | Common Stock | Award | $0 | +5,445 | +6.7% | $0.000000 | 86,335 | 19 Nov 2025 | Direct | F1 |
| transaction | CBT | Common Stock | Tax liability | $59,640 | -998 | -1.2% | $59.76 | 85,337 | 19 Nov 2025 | Direct |
| 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 | +22,544 | $0.000000 | 22,544 | 19 Nov 2025 | Common Stock | 22,544 | $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 3,831 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. |