X0306 4 2022-05-31 0 0000016040 CABOT CORP CBT 0001740348 McLaughlin Erica C/O CABOT CORPORATION TWO SEAPORT LANE, SUITE 1400 BOSTON MA 02210 0 1 0 0 Senior Vice President, CFO COMMON STOCK 2022-05-31 4 M 0 2295 46.03 A 47031 D COMMON STOCK 2022-05-31 4 M 0 3293 39.54 A 50324 D COMMON STOCK 2022-05-31 4 M 0 3534 50.46 A 53858 D COMMON STOCK 2022-05-31 4 S 0 3007 76.054 D 50851 D COMMON STOCK 2022-05-31 4 S 0 4335 77.131 D 46516 D COMMON STOCK 2022-05-31 4 S 0 1780 77.822 D 44736 D COMMON STOCK 1.535 I Through the Trustees for the Corporation's Retirement Savings Plan STOCK OPTIONS 46.03 2022-05-31 4 M 0 2295 46.03 A 2024-11-13 CABOT CORP 2295 0 D STOCK OPTIONS 39.54 2022-05-31 4 M 0 3293 39.54 A 2025-11-11 CABOT CORP 3293 0 D STOCK OPTIONS 50.46 2022-05-31 4 M 0 3534 50.46 A 2026-11-10 CABOT CORP 3534 0 D The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $75.590 to $76.570, 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. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $76.600 to $77.600, 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. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $77.630 to $78.180, 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. Reflects retirement plan contributions by the Corporation. 2,295.000 shares were subject to the option. The option vested over a three year period as follows: 30% on November 14, 2015, 30% on November 14, 2016 and 40% on November 14, 2017. 3,293.000 shares were subject to the option. The option vested over a three year period as follows: 30% on November 12, 2016, 30% on November 12, 2017 and 40% on November 12, 2018. 3,534.000 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. By: Jennifer Lombardi, pursuant to a power of attorney from Erica McLaughlin 2022-06-01