ALLEGHENY TECHNOLOGI

CUSIP: 01741R10 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2015
Shares 76,195 Value ($000) $857 Avg Close — Range —
Q3 2015
Shares 68,362 Value ($000) $2,065 Avg Close — Range —
Q2 2015
Shares 68,362 Value ($000) $2,065 Avg Close — Range —