CENTURY ALUM CO

Ticker: CENX CUSIP: 156431108 Class: EQTY

CAISSE DE DEPOT ET PLACEMENT DU QUEBEC's Holding History (CIK: 0000898286)

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

Q3 2018

Shares 300,000 Value ($000) $3,591 Avg Close $12.86 Range $11.04 - $15.58

Q2 2018

Shares 300,000 Value ($000) $4,725 Avg Close $16.93 Range $14.14 - $20.19

Q3 2013

Shares 2,000,000 Value ($000) $16,100 Avg Close $8.84 Range $7.65 - $10.53

Q2 2013

Shares 2,000,000 Value ($000) $18,560 Avg Close $8.61 Range $6.26 - $10.60

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	300,000	$3,591	$12.86	$11.04 - $15.58
Q2 2018	300,000	$4,725	$16.93	$14.14 - $20.19
Q3 2013	2,000,000	$16,100	$8.84	$7.65 - $10.53
Q2 2013	2,000,000	$18,560	$8.61	$6.26 - $10.60