CENTURY ALUM CO

Ticker: CENX CUSIP: 156431108 Class: EQTY

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

Note: Option positions (PUT/CALL) are excluded.

Q2 2015

Shares 29,391 Value ($000) $306,548 Avg Close $12.74 Range $10.13 - $14.98

Q1 2015

Shares 29,917 Value ($000) $412,855 Avg Close $20.13 Range $12.87 - $26.97

Q4 2014

Shares 29,044 Value ($000) $708,674 Avg Close $25.81 Range $20.79 - $31.75

Q3 2014

Shares 1,045,162 Value ($000) $27,143 Avg Close $22.02 Range $15.77 - $29.54

Q2 2014

Shares 2,522,611 Value ($000) $39,555 Avg Close $14.18 Range $12.63 - $15.94

Q1 2014

Shares 2,636,050 Value ($000) $34,822,221 Avg Close $11.63 Range $9.67 - $13.37

Q4 2013

Shares 2,792,050 Value ($000) $29,204,843 Avg Close $8.91 Range $7.80 - $10.49

Q3 2013

Shares 2,809,900 Value ($000) $22,563,497 Avg Close $8.84 Range $7.65 - $10.53

Q2 2013

Shares 2,630,340 Value ($000) $24,409,555 Avg Close $8.61 Range $6.26 - $10.60

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	29,391	$306,548	$12.74	$10.13 - $14.98
Q1 2015	29,917	$412,855	$20.13	$12.87 - $26.97
Q4 2014	29,044	$708,674	$25.81	$20.79 - $31.75
Q3 2014	1,045,162	$27,143	$22.02	$15.77 - $29.54
Q2 2014	2,522,611	$39,555	$14.18	$12.63 - $15.94
Q1 2014	2,636,050	$34,822,221	$11.63	$9.67 - $13.37
Q4 2013	2,792,050	$29,204,843	$8.91	$7.80 - $10.49
Q3 2013	2,809,900	$22,563,497	$8.84	$7.65 - $10.53
Q2 2013	2,630,340	$24,409,555	$8.61	$6.26 - $10.60