CABOT CORP — Director's Dealing 2011

Nov 15, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2011-11-11

Reporting Person: Keohane Sean D (Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-11-11	Common Stock	A	6828	$0.00	Acquired	17491	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-11-11	Employee Stock Option (Right to Buy)	$32.95	A	22561	Acquired	2021-11-10	Common Stock (22561)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	8475.23	Indirect

Footnotes

F1: Reflects retirement plan contributions by the Corporation, including contributions that have occurred since the date of the reporting person's last ownership report.

F2: The option vests over a three year period as follows: 30% on November 11, 2012, 30% on November 11, 2013 and 40% on November 11, 2014.