CENTURY ALUMINUM (CENX)

Sector: Materials

Name	Position	Age	Qualifications and Experience	Committee Memberships	Filing Year
Andrew Michelmore	Director	73	["Executive Director and Chief Executive Officer of MMG Limited from December 2010 to February 2017","Chairman of the International Council on Mining and Metals from April 2016 to June 2017","Chairman of the Minerals Council of Australia since January 2023","Chairman of the Council of Ormond College at the University of Melbourne from 2003 to 2020","Chairman of the Jean Hailes Foundation from 1996 to 2024","Experience as Chief Executive Officer of Zinifex, OZ Minerals, EN+ Group and WMC Resources","Fellow of the Institution of Chemical Engineers","Fellow of the Australian Academy of Technological Sciences and Engineering","Member of the Australian Institute of Company Directors","International diversity and perspective in metals and mining companies"]	["Audit","Compensation","Governance & Nominating","Health, Safety & Sustainability"]	2026
Errol Glasser	Director	72	["Regency Affiliates, Inc.","Partner and Co-Founder of Triangle Capital LLC since March 2005","Director of Regency Affiliates, Inc. since 2002","Trustee of the Darrow School from September 2008 to February 2020","Extensive expertise in corporate development activities","Experience in the financial sector for over 40 years","Substantial financial, accounting and investment knowledge","Experience serving on other boards and audit committees","Chartered Accountant (SA)","Audit committee financial expert"]	["Audit","Compensation","Governance & Nominating","Health, Safety & Sustainability"]	2026
Jarl Berntzen	Director; Chief Corporate Development Officer	59	["extensive experience in mergers and acquisitions","financial restructurings","corporate development activities","senior M&A advisory positions at international investment banks","more than 10 years with Goldman, Sachs & Co.","audit committee financial expert","international perspective and diversity"]	["Audit","Compensation","Governance & Nominating","Health, Safety & Sustainability"]	2026
Jennifer Bush	Director	52	["Cummins India, Ltd.","25 years of experience in global P&L","commercial and operational leadership in industrial businesses","Chair of the Board of Directors of Cummins India, Ltd.","expertise in manufacturing","operational excellence","health and safety","sustainability"]	["Audit","Compensation","Governance & Nominating","Health, Safety & Sustainability"]	2026
Jesse Gary	Director; President and Chief Executive Officer	46	["Served as Chief Operating Officer from April 2019 through July 2021","Served as Executive Vice President and General Counsel from February 2013 through July 2021","Practiced law at Wachtell, Lipton, Rosen & Katz in New York","Valuable leadership, risk-management, and strategy-development experience","Extensive knowledge of the aluminum industry and global market conditions","President and Chief Executive Officer","Executive Vice President","General Counsel","Chief Operating Officer"]	["AC","CC","G&NC","HSSC","Health, Safety & Sustainability"]	2026
Tamla A. Olivier	Director	53	["President and CEO of Baltimore Gas & Electric Company","Senior Vice President and Chief Operating Officer of Pepco Holdings, Inc.","Senior Vice President and Chief Customer Officer of Baltimore Gas & Electric Company","Senior Vice President of Constellation","President and CEO of BGE Home and Constellation Home","Leadership roles with T. Rowe Price, United Defense and Wells Fargo"]	["Audit","Compensation","Governance & Nominating (Chair)","Health, Safety & Sustainability"]	2026
Wilhelm van Jaarsveld	Director	41	["Asset and Investment Manager of the Aluminum and Alumina Department of Glencore plc since July 2017","Asset Controller/Financial Analyst for Glencore plc from July 2012 to June 2017","Experience managing aluminum, alumina and bauxite operations and investments around the world","International diversity and perspective as a Swiss resident and South African native"]	[]	2026

Name

Position

Age

Qualifications and Experience

Committee Memberships

Filing Year

Andrew Michelmore

Director

["Executive Director and Chief Executive Officer of MMG Limited from December 2010 to February 2017","Chairman of the International Council on Mining and Metals from April 2016 to June 2017","Chairman of the Minerals Council of Australia since January 2023","Chairman of the Council of Ormond College at the University of Melbourne from 2003 to 2020","Chairman of the Jean Hailes Foundation from 1996 to 2024","Experience as Chief Executive Officer of Zinifex, OZ Minerals, EN+ Group and WMC Resources","Fellow of the Institution of Chemical Engineers","Fellow of the Australian Academy of Technological Sciences and Engineering","Member of the Australian Institute of Company Directors","International diversity and perspective in metals and mining companies"]

["Audit","Compensation","Governance & Nominating","Health, Safety & Sustainability"]

2026

Errol Glasser

Director

["Regency Affiliates, Inc.","Partner and Co-Founder of Triangle Capital LLC since March 2005","Director of Regency Affiliates, Inc. since 2002","Trustee of the Darrow School from September 2008 to February 2020","Extensive expertise in corporate development activities","Experience in the financial sector for over 40 years","Substantial financial, accounting and investment knowledge","Experience serving on other boards and audit committees","Chartered Accountant (SA)","Audit committee financial expert"]

["Audit","Compensation","Governance & Nominating","Health, Safety & Sustainability"]

2026

Jarl Berntzen

Director; Chief Corporate Development Officer

["extensive experience in mergers and acquisitions","financial restructurings","corporate development activities","senior M&A advisory positions at international investment banks","more than 10 years with Goldman, Sachs & Co.","audit committee financial expert","international perspective and diversity"]

["Audit","Compensation","Governance & Nominating","Health, Safety & Sustainability"]

2026

Jennifer Bush

Director

["Cummins India, Ltd.","25 years of experience in global P&L","commercial and operational leadership in industrial businesses","Chair of the Board of Directors of Cummins India, Ltd.","expertise in manufacturing","operational excellence","health and safety","sustainability"]

["Audit","Compensation","Governance & Nominating","Health, Safety & Sustainability"]

2026

Jesse Gary

Director; President and Chief Executive Officer

["Served as Chief Operating Officer from April 2019 through July 2021","Served as Executive Vice President and General Counsel from February 2013 through July 2021","Practiced law at Wachtell, Lipton, Rosen & Katz in New York","Valuable leadership, risk-management, and strategy-development experience","Extensive knowledge of the aluminum industry and global market conditions","President and Chief Executive Officer","Executive Vice President","General Counsel","Chief Operating Officer"]

["AC","CC","G&NC","HSSC","Health, Safety & Sustainability"]

2026

Tamla A. Olivier

Director

["President and CEO of Baltimore Gas & Electric Company","Senior Vice President and Chief Operating Officer of Pepco Holdings, Inc.","Senior Vice President and Chief Customer Officer of Baltimore Gas & Electric Company","Senior Vice President of Constellation","President and CEO of BGE Home and Constellation Home","Leadership roles with T. Rowe Price, United Defense and Wells Fargo"]

["Audit","Compensation","Governance & Nominating (Chair)","Health, Safety & Sustainability"]

2026

Wilhelm van Jaarsveld

Director

["Asset and Investment Manager of the Aluminum and Alumina Department of Glencore plc since July 2017","Asset Controller/Financial Analyst for Glencore plc from July 2012 to June 2017","Experience managing aluminum, alumina and bauxite operations and investments around the world","International diversity and perspective as a Swiss resident and South African native"]

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2026