CABOT CORP — Director's Dealing 2005

Apr 1, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CABOT CORP (CBT)
CIK: 0000016040
Period of Report: 2005-03-31

Reporting Person: ENRIQUEZ CABOT JUAN (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-03-31	Phantom Stock Units	$0	A	200.42	Acquired	1988-08-08	Common stock (200.42)	Direct

Footnotes

F1: 1 for 1

F2: Immediately exercisable

F3: The shares of phantom stock become payable in monthly cash installments upon the reporting person's termination of service as a director.