Document
EXHIBIT 24.1
POWER OF ATTORNEY
I hereby constitute and appoint John DeZee and Paul Sharobeem as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2025, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.
IN WITNESS WHEREOF, I have hereunto set my hand this 25th day of December 2025.
| /s/ Andrew Michelmore | ||
| Name: Andrew Michelmore | ||
| Director | ||
| Century Aluminum Company | ||
POWER OF ATTORNEY
I hereby constitute and appoint John DeZee and Paul Sharobeem as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2025, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.
IN WITNESS WHEREOF, I have hereunto set my hand this 23rd day of December 2025.
| /s/ Jarl Berntzen | ||
| Name: Jarl Berntzen | ||
| Director | ||
| Century Aluminum Company | ||
POWER OF ATTORNEY
I hereby constitute and appoint John DeZee and Paul Sharobeem as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2025, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.
IN WITNESS WHEREOF, I have hereunto set my hand this 23rd day of December 2025.
| /s/ Jennifer Bush | ||
| Name: Jennifer Bush | ||
| Director | ||
| Century Aluminum Company | ||
POWER OF ATTORNEY
I hereby constitute and appoint John DeZee and Paul Sharobeem as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2025, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.
IN WITNESS WHEREOF, I have hereunto set my hand this 23rd day of December 2025.
| /s/ Errol Glasser | ||
| Name: Errol Glasser | ||
| Director | ||
| Century Aluminum Company | ||
POWER OF ATTORNEY
I hereby constitute and appoint John DeZee and Paul Sharobeem as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2025, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.
IN WITNESS WHEREOF, I have hereunto set my hand this 5th day of January 2026.
| /s/ Wilhelm van Jaarsveld | ||
| Name: Wilhelm van Jaarsveld | ||
| Director | ||
| Century Aluminum Company | ||
POWER OF ATTORNEY
I hereby constitute and appoint John DeZee and Paul Sharobeem as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2025, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.
IN WITNESS WHEREOF, I have hereunto set my hand this 23rd day of December 2025.
| /s/ Tamla Olivier | ||
| Name: Tamla Olivier | ||
| Director | ||
| Century Aluminum Company | ||