ARATANA THERAPEUTICS INC

CUSIP: 03874P101 Class: COM

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

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

Q3 2015
Shares 3,501 Value ($000) $30 Avg Close — Range —
Q2 2015
Shares 3,501 Value ($000) $53 Avg Close — Range —
Q1 2015
Shares 3,501 Value ($000) $56 Avg Close — Range —