US ECOLOGY INC

CUSIP: 91732J102 Class: CMN

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q3 2017
Shares 471 Value ($000) $25 Avg Close — Range —
Q4 2015
Shares 197 Value ($000) $7 Avg Close — Range —
Q3 2015
Shares 90 Value ($000) $3 Avg Close — Range —
Q2 2015
Shares 4 Value ($000) $0 Avg Close — Range —
Q4 2014
Shares 447 Value ($000) $18 Avg Close — Range —