| 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 M. Lombardi, pursuant to a power of attorney from Sean D. Keohane | 15 Aug 2025 | 0001435737 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBT | Common Stock | Options Exercise | $4.44M | +88K | +24.34% | $50.46 | 449K | 14 Aug 2025 | Direct | |
| transaction | CBT | Common Stock | Sale | -$6.36M | -80.3K | -17.87% | $79.24 | 369K | 14 Aug 2025 | Direct | F1 |
| transaction | CBT | Common Stock | Sale | -$611K | -7.68K | -2.08% | $79.62 | 362K | 14 Aug 2025 | Direct | F2 |
| transaction | CBT | Common Stock | Options Exercise | $1.3M | +26.5K | +7.32% | $49.26 | 388K | 14 Aug 2025 | Direct | |
| transaction | CBT | Common Stock | Sale | -$1.91M | -24.1K | -6.21% | $79.25 | 364K | 14 Aug 2025 | Direct | F3 |
| transaction | CBT | Common Stock | Sale | -$189K | -2.37K | -0.65% | $79.63 | 362K | 14 Aug 2025 | Direct | F4 |
| holding | CBT | Common Stock | 13.8K | 14 Aug 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) | Options Exercise | $0 | +26.5K | $0.00 | 0 | 14 Aug 2025 | Common Stock | 26.5K | $49.26 | Direct | F5 | |
| transaction | CBT | Employee Stock Option (Right to Buy) | Options Exercise | $0 | +88K | $0.00 | 0 | 14 Aug 2025 | Common Stock | 88K | $50.46 | Direct | F6 |
| Id | Content |
|---|---|
| F1 | The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $78.570 to $79.565, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price. |
| F2 | The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $79.570 to $79.690, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price. |
| F3 | The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $78.580 to $79.570, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price. |
| F4 | The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $79.580 to $79.740, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price. |
| F5 | 26,455 shares were subject to the option. The option vested over a three year period as follows: 30% on March 21, 2017, 30% on March 21, 2018 and 40% on March 21, 2019. |
| F6 | 87,981 shares were subject to the option. The option vested over a three year period as follows: 30% on November 11, 2017, 30% on November 11, 2018 and 40% on November 11, 2019. |