Cabot Corporation to Host Analyst Day

May 16, 2005

BOSTON, May 16 /PRNewswire-FirstCall/ -- Cabot Corporation (NYSE: CBT) announced today that Kennett F. Burnes, Chairman and CEO, and senior management will host an analyst day on Tuesday, June 14, 2005.

Cabot's presentations and remarks will be webcast beginning at approximately 8:30am (ET) and can be accessed at Cabot's website at http://investor.cabot-corp.com.

If you are unable to participate during the live webcast, the event will be archived on the Company's website at http://investor.cabot-corp.com. A replay will be available for 30 days.

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

Contact:
Susannah Robinson
Director, Investor Relations
(617) 342-6244

SOURCE Cabot Corporation