NUVERRA ENVIRONMENTAL SOLUTI

CUSIP: 67091K203 Class: COM

GREAT WEST LIFE ASSURANCE CO /CAN/'s Holding History (CIK: 0001046192)

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

Q3 2014
Shares 609 Value ($000) $9 Avg Close — Range —
Q2 2014
Shares 609 Value ($000) $12 Avg Close — Range —
Q1 2014
Shares 609 Value ($000) $12 Avg Close — Range —
Q4 2013
Shares 609 Value ($000) $10 Avg Close — Range —