Historical shareholding details of Mountaineer Partners Management LLC holdings in Century Aluminum Co. (CENX)

Monthly changes of Mountaineer Partners Management LLC shareholding in Century Aluminum Co. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Dec 31, 2024	Mountaineer Partners Management Llc	647,845	0.70%

Sep 30, 2024	Mountaineer Partners Management Llc	1,407,831	1.52%

Jun 30, 2024	Mountaineer Partners Management Llc	1,338,458	1.44%

Mar 31, 2024	Mountaineer Partners Management Llc	2,142,103	2.31%

Dec 31, 2023	Mountaineer Partners Management Llc	2,270,805	2.45%

Sep 30, 2023	Mountaineer Partners Management Llc	2,035,868	2.20%

Jun 30, 2023	Mountaineer Partners Management Llc	1,997,343	2.16%

Mar 31, 2023	Mountaineer Partners Management Llc	1,103,201	1.19%