US ECOLOGY INC

CUSIP: 91732J102 Class: CMN

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q2 2018
Shares 50 Value ($000) $3 Avg Close — Range —
Q4 2017
Shares 3,318 Value ($000) $169 Avg Close — Range —