CABOT CORP — Director's Dealing 2007

Jun 20, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2007-06-18

Reporting Person: BURNES KENNETT F (Director, Chairman, CEO and President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-06-18	Common Stock	S	300	$48.04	Disposed	827267	Direct
2007-06-18	Common Stock	S	1200	$48.03	Disposed	826067	Direct
2007-06-18	Common Stock	S	3400	$48.02	Disposed	822667	Direct
2007-06-18	Common Stock	S	2900	$48.01	Disposed	819767	Direct
2007-06-18	Common Stock	S	4500	$48.00	Disposed	815267	Direct
2007-06-18	Common Stock	S	8900	$47.99	Disposed	806367	Direct
2007-06-18	Common Stock	S	9000	$47.98	Disposed	797367	Direct
2007-06-18	Common Stock	S	6000	$47.97	Disposed	791367	Direct
2007-06-18	Common Stock	S	5600	$47.96	Disposed	785767	Direct
2007-06-18	Common Stock	S	1300	$47.95	Disposed	784467	Direct
2007-06-18	Common Stock	S	1900	$47.94	Disposed	782567	Direct
2007-06-18	Common Stock	S	1300	$47.93	Disposed	781267	Direct
2007-06-18	Common Stock	S	4365	$47.92	Disposed	776902	Direct
2007-06-18	Common Stock	S	3500	$47.91	Disposed	773402	Direct
2007-06-18	Common Stock	S	7300	$47.90	Disposed	766102	Direct
2007-06-18	Common Stock	S	6800	$47.89	Disposed	759302	Direct
2007-06-18	Common Stock	S	1100	$47.88	Disposed	758202	Direct
2007-06-18	Common Stock	S	1500	$47.87	Disposed	756702	Direct
2007-06-18	Common Stock	S	1300	$47.86	Disposed	755402	Direct
2007-06-18	Common Stock	S	2400	$47.85	Disposed	753002	Direct
2007-06-18	Common Stock	S	2100	$47.84	Disposed	750902	Direct
2007-06-18	Common Stock	S	2000	$47.83	Disposed	748902	Direct
2007-06-18	Common Stock	S	2500	$47.82	Disposed	746402	Direct
2007-06-18	Common Stock	S	3100	$47.81	Disposed	743302	Direct
2007-06-18	Common Stock	S	3600	$47.80	Disposed	739702	Direct
2007-06-18	Common Stock	S	500	$47.79	Disposed	739202	Direct
2007-06-18	Common Stock	S	400	$47.78	Disposed	738802	Direct
2007-06-18	Common Stock	S	1500	$47.77	Disposed	737302	Direct
2007-06-18	Common Stock	S	1400	$47.76	Disposed	735902	Direct
2007-06-18	Common Stock	S	900	$47.75	Disposed	735002	Direct