Cabot Corporation Announces Retirement of John S. Clarkeson from the Board of Directors, Effective from March 12, 2015

In accordance with Cabot Corporations retirement policy for non-employee directors, John S. Clarkeson will be retiring from the Board of Directors of Cabot, effective at Cabots Annual Meeting of Stockholders to be held on March 12, 2015. Mr. Clarkeson has served as a Director of Cabot since 1998.