CABOT CORP — Director's Dealing 2013

Dec 5, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2013-12-04

Reporting Person: BERUBE BRIAN A (SVP, General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-12-04	Common Stock	M	5000	$23.15	Acquired	42778	Direct
2013-12-04	Common Stock	S	10445	$48.4872	Disposed	32333	Direct
2013-12-04	Common Stock	G	1000	$0.00	Disposed	31333	Direct
2013-12-04	Common Stock	I	6325.533	$48.37	Disposed	7857.4956	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-12-04	Employee Stock Option (Right to Buy)	$23.15	M	5000	Disposed	2019-11-12	Common Stock (5000)	Direct

Footnotes

F1: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $48.29 to $48.69, 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: Reflects retirement plan contributions by the Corporation, including contributions that have occurred since the date of the reporting person's last ownership report.

F3: 25,200 shares are subject to the option. The option vested over a three year period as follows: 30% on November 13, 2010, 30% on November 13, 2011 and 40% on November 13, 2012.