Cabot Corporation Elects James P. Kelly Vice President

November 27, 2007

BOSTON, Nov. 27 /PRNewswire-FirstCall/ -- Cabot Corporation (NYSE: CBT) recently announced the election of a new Vice President, James P. Kelly.

(Logo: http://www.newscom.com/cgi-bin/prnh/20000323/CABOTLOGO )

Mr. Kelly has served as Controller since 2005. He joined Cabot in 1998 and has held several senior positions in the area of Finance including Director of Internal Audit, Director of Investor Relations and Finance Director for the Rubber Blacks business unit. Prior to joining Cabot, Mr. Kelly held the position of Division Controller for the Norton Company in the Worcester, Massachusetts location, and with Norton's parent company, Compagnie de Saint Gobain in Paris, France.

He earned his BS in Accounting from Georgetown University in Washington, DC and an MBA from Harvard University.

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. The website address is http://www.cabot-corp.com.

Contact: Ethel Shepard
Manager, Corporate Affairs
617-342-6254
ethel_shepard@cabot-corp.com

Susannah Robinson
Director, Investor Relations
617-342-6244

SOURCE Cabot Corporation