On May 26, 2021, Century Aluminum Company appointed Robert Hoffman as Chief Accounting Officer, effective May 26, 2021. Mr. Hoffman will serve as the principal accounting officer of the company. Mr. Hoffman has served as the Company's Chief Information Officer since June 2017, and prior to that, served as Director of Financial Planning and Analysis with the Company from May 2015 through May 2017, Chief Accounting Officer and Controller from October 2013 through April 2015, Corporate Controller from January 2013 through September 2013 and Assistant Controller from July 2011 through December 2012.