On January 9, 2020, John F. O'Brien and Patrick M. Prevost submitted their resignations from the Board of Directors of Cabot Corporation (Cabot"). Both of their retirements from the Board are effective at Cabot's Annual Meeting of Stockholders to be held on March 12, 2020. Mr. O'Brien, who has served as a director of Cabot since 1990, currently serves as Chair of the Compensation Committee and on the Governance and Nominating Committee and the Executive Committee. Mr. Prevost, who has served as a director since 2008, currently serves on the Safety, Health, Environment and Sustainability Committee.