CABOT CORP — Director's Dealing 2013

Sep 24, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2013-09-23

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-09-23	Common Stock	M	18000	$16.90	Acquired	55687	Direct
2013-09-23	Common Stock	S	18000	$42.0476	Disposed	37687	Direct
2013-09-23	Common Stock	S	5000	$42.1416	Disposed	32687	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-09-23	Employee Stock Option (Right to Buy)	$16.90	M	18000	Disposed	2013-05-06	Common Stock (18000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	13854.7015	Indirect

Footnotes

F1: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $41.90 to $42.40, 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: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $42.00 to $42.35, 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: Reflects retirement plan contributions by the Corporation, including contributions that have occurred since the date of the reporting person's last ownership report.

F4: 45,000 shares are subject to the option. 13,500 shares vested on May 7, 2010, 13,500 shares vested on May 7, 2011 and 18,000 shares vested on May 7, 2012.