TRANSALTA CORP

Ticker: TAC CUSIP: 89346D107 Class: COM

VIRGINIA RETIREMENT SYSTEMS ET AL's Holding History (CIK: 0001005354)

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

Q3 2014

Shares 12,500 Value ($000) $131 Avg Close $11.42 Range $10.32 - $12.38

Q2 2014

Shares 13,000 Value ($000) $160 Avg Close $11.95 Range $11.47 - $12.41

Q1 2014

Shares 12,900 Value ($000) $150 Avg Close $12.36 Range $11.20 - $13.67

Q4 2013

Shares 12,600 Value ($000) $160 Avg Close $13.25 Range $12.43 - $14.12

Q3 2013

Shares 14,700 Value ($000) $191 Avg Close $13.51 Range $12.57 - $14.75

Q2 2013

Shares 14,400 Value ($000) $197 Avg Close $14.11 Range $12.15 - $15.37

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2014	12,500	$131	$11.42	$10.32 - $12.38
Q2 2014	13,000	$160	$11.95	$11.47 - $12.41
Q1 2014	12,900	$150	$12.36	$11.20 - $13.67
Q4 2013	12,600	$160	$13.25	$12.43 - $14.12
Q3 2013	14,700	$191	$13.51	$12.57 - $14.75
Q2 2013	14,400	$197	$14.11	$12.15 - $15.37