Cabot Corporation Elects New Officers

March 17, 2006

BOSTON, March 17 /PRNewswire-FirstCall/ -- Cabot Corporation (NYSE: CBT) announced today the election of the following individuals as vice presidents of the Company:

Irene S. Sudac, Treasurer, joined Cabot in March, 2005, responsible for global treasury operations. Prior to working at Cabot, Ms. Sudac worked at Philips Electronics North America, in Atlanta, GA and New York City for nine years, where she held several senior finance positions including Director of Banking and Finance for the North American operations. Before joining Philips Electronics, she was employed at JP Morgan and Credit Suisse First Boston, managing relationships with global corporations. Ms. Sudac has a B.A. in Economics from Brown University and an MBA from Harvard Business School.

Yakov Kutsovsky, who was named Global Director of Research & Development in November, 2005, joined Cabot as an Engineering Associate in 1996. While at Cabot, Mr. Kutsovsky has held several key R&D positions including R&D Manager for Cabot's fumed metal oxides (FMO) product line and Senior Engineering Associate for Cabot's rubber blacks product line. He has played a significant role in the development of several Cabot product and manufacturing innovations. Mr. Kutsovsky has a Ph.D. in Chemical Engineering from the University of Minnesota and an M.S. in Chemical Physics from Novosibirsk State University, Russia.

Cabot Chairman and CEO, Kennett F. Burnes, said, "I am pleased to announce the election of these new officers, whose experience and proven leadership will continue to strengthen our organization."

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
617-342-6129

SOURCE Cabot Corporation