Cabot Board Declares Dividend

May 9, 2008

BOSTON, May 9 /PRNewswire-FirstCall/ -- On Thursday, May 8, 2008, the Board of Directors of Cabot Corporation (NYSE: CBT) declared a quarterly dividend of $0.18 per share on all outstanding shares of the Corporation's common stock. The dividend is payable on June 13, 2008 to stockholders of record at the close of business on May 30, 2008.

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About Cabot Corporation

Cabot Corporation is a global specialty chemicals and materials company and is headquartered in Boston, MA. Cabot's major products are carbon black, fumed silica, inkjet colorants, capacitor materials, and cesium formate drilling fluids.

SOURCE Cabot Corporation
CONTACT: Susannah R. Robinson, Director, Investor Relations Cabot Corporation
-617-342-6129

Web site: http://www.cabot-corp.com