CABOT CORP — Director's Dealing 2021

May 12, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2021-05-10

Reporting Person: Kalita Karen A (SVP and General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-10	Common Stock	M	6862	$40.91	Acquired	21687	Direct
2021-05-10	Common Stock	S	5533	$62.717	Disposed	16154	Direct
2021-05-10	Common Stock	M	5898	$50.23	Acquired	22052	Direct
2021-05-10	Common Stock	S	5224	$62.97	Disposed	16828	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-10	Stock Options	$40.91	M	6862	Acquired	2029-06-02	Common Stock (6862)	Direct
2021-05-10	Stock Options	$50.23	M	5898	Acquired	2029-11-07	Common Stock (5898)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	540.216	Indirect

Footnotes

F1: Consists of shares sold to cover stock option exercise price and taxes due upon exercise of such stock options; balance of shares issued upon exercise of stock options were held. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $62.67 to $62.74, 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: Consists of shares sold to cover stock option exercise price and taxes due upon exercise of such stock options; balance of shares issued upon exercise of stock options were held. The price reported is a weighted average sale price. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $62.92 to $62.99, 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: 11,437 shares were subject to the option. The option vests over a three year period as follows: 30% on November 9, 2019, 30% on November 9, 2020 and 40% on November 9, 2021.

F4: 19,662 shares were subject to the option. The option vests over a three year period as follows: 30% on November 8, 2020, 30% on November 8, 2021 and 40% on November 8, 2022.