CABOT CORP — Director's Dealing 2021

May 7, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2021-05-05

Reporting Person: Kalkstein Hobart (Senior Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-05	Common Stock	S	5888	$60.65	Disposed	38168	Direct
2021-05-05	Common Stock	M	5763	$39.54	Acquired	43931	Direct
2021-05-06	Common Stock	S	8242	$62.02	Disposed	35689	Direct
2021-05-06	Common Stock	M	4017	$46.03	Acquired	39706	Direct
2021-05-06	Common Stock	M	4251	$47.23	Acquired	43957	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-05	Stock Options	$39.54	M	5763	Acquired	2025-11-11	Cabot Corp (5763)	Direct
2021-05-06	Stock Options	$46.03	M	4017	Acquired	2024-11-13	Cabot Corp (4017)	Direct
2021-05-06	Stock Options	$47.23	M	4251	Acquired	2026-04-06	Cabot Corp (4251)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	6620.24	Indirect

Footnotes

F1: Grant had a graded vesting schedule. Date Exercisable will vary for each vesting tranche.