CABOT CORP — Director's Dealing 2016

Mar 2, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2016-03-01

Reporting Person: Prevost Patrick M. (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-03-01	Common Stock	M	60000	$16.90	Acquired	351458	Direct
2016-03-01	Common Stock	S	60000	$44.9774	Disposed	291458	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-03-01	Employee Stock Option (Right to Buy)	$16.90	M	60000	Disposed	2019-05-06	Common Stock (60000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7789.4	Indirect

Footnotes

F1: The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $44.73 to $45.17, 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: 300,000 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.