ARATANA THERAPEUTICS INC

CUSIP: 03874P101 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2018
Shares 162,672 Value ($000) $997 Avg Close — Range —
Q3 2016
Shares 45,255 Value ($000) $424 Avg Close — Range —
Q1 2015
Shares 30,897 Value ($000) $495 Avg Close — Range —