X0303 4 2011-03-22 0 0000949157 CENTURY ALUMINUM CO CENX 0001200090 SCHNEIDER STEVE CENTURY ALUMINUM COMPANY 2511 GARDEN ROAD, BLDG A, SUITE 200 MONTEREY CA 93940 0 1 0 0 Sr. VP & Chief Acct. Officer Common Stock 2011-03-22 4 A 0 5158 A 30502 D Represents shares of common stock acquired by the Reporting Person upon the vesting of performance share units granted pursuant to the Issuer's 2011-2013 Performance Share Program ("Plan Period") under a Rule 16b-3(d) plan, all of which vest in the ordinary course on the last day of the Plan Period, December 31, 2013. Includes unvested shares of performance share units granted to the Reporting Person in connection with the Issuer's 2010-2012 and 2011-2013 Performance Share Programs under a Rule 16b-3(d) plan, all of which vest in the ordinary course on December 31, 2012 and December 31, 2013, respectively. Jesse E. Gary, Attorney-in-Fact for Steve Schneider 2011-03-24