CABOT CORP — Director's Dealing 2015

Feb 19, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2015-02-17

Reporting Person: Kelly James Patrick (Vice President and Controller)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-02-17	Common Stock	M	34	$16.90	Acquired	27917	Direct
2015-02-17	Common Stock	S	34	$47.95	Disposed	27883	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-02-17	Employee Stock Option (Right to Buy)	$16.90	M	34	Disposed	2019-05-06	Common Stock (34)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	8169.4786	Indirect

Footnotes

F1: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 5, 2014.

F2: Reflects retirement plan contributions by the Corporation, including contributions that have occurred since the date of the reporting person's last ownership report.

F3: 16,300 shares were subject to the option. The option vested over a three year period as follows: 30% May 7, 2010, 30% May 7, 2011 and 40% on May 7, 2012.