Century Aluminum Company (CENX) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum

Century Aluminum Company Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum

Century Aluminum Company (CENX) reported Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum of 0.77% for the 12-month period ending 2012-12-31, per its 10-K filed 2013-03-18.

Discontinued › Notes › Compensation Related Costs › Share-Based Payment Arrangement, Disclosure › Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum · last filed 2013-03-18

• Century Aluminum Company share-based compensation arrangement by share-based payment award, fair value assumptions, expected volatility rate, maximum for fiscal 2012 was 0.77%, a 99.43% decline from fiscal 2011.
• Century Aluminum Company share-based compensation arrangement by share-based payment award, fair value assumptions, expected volatility rate, maximum for fiscal 2011 was 134.00%, a 24.07% increase from fiscal 2010.
• Century Aluminum Company share-based compensation arrangement by share-based payment award, fair value assumptions, expected volatility rate, maximum for fiscal 2010 was 108.00%, a 14.29% decline from fiscal 2009.
• Century Aluminum Company share-based compensation arrangement by share-based payment award, fair value assumptions, expected volatility rate, maximum for fiscal 2009 was 126.00%.