CENTURY ALUM CO

Ticker: CENX CUSIP: 156431108 Class: EQTY

LOOMIS SAYLES & CO L P's Holding History (CIK: 0000312348)

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

Q4 2015

Shares 2,820 Value ($000) $12 Avg Close $4.29 Range $3.19 - $7.21

Q3 2015

Shares 3,464 Value ($000) $16 Avg Close $6.98 Range $4.07 - $10.59

Q2 2015

Shares 4,456 Value ($000) $46 Avg Close $12.74 Range $10.13 - $14.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	2,820	$12	$4.29	$3.19 - $7.21
Q3 2015	3,464	$16	$6.98	$4.07 - $10.59
Q2 2015	4,456	$46	$12.74	$10.13 - $14.98