NUVERRA ENVIRONMENTAL SOLUTI

CUSIP: 67091K104 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2013
Shares 82,481 Value ($000) $1,385 Avg Close — Range —
Q3 2013
Shares 842,506 Value ($000) $1,929 Avg Close — Range —
Q2 2013
Shares 33,178 Value ($000) $96 Avg Close — Range —