US ECOLOGY INC

CUSIP: 91732J10 Class: COM

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

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

Q1 2014
Shares 13,621 Value ($000) $506 Avg Close — Range —
Q4 2013
Shares 15,748 Value ($000) $586 Avg Close — Range —