ARATANA THERAPEUTICS INC

CUSIP: 03874P101 Class: COM

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q2 2019
Shares 143,710 Value ($000) $742 Avg Close — Range —
Q1 2019
Shares 158,350 Value ($000) $570 Avg Close — Range —
Q4 2018
Shares 262,500 Value ($000) $1,609 Avg Close — Range —
Q3 2018
Shares 288,525 Value ($000) $1,685 Avg Close — Range —
Q2 2018
Shares 601,480 Value ($000) $2,556 Avg Close — Range —
Q1 2018
Shares 866,002 Value ($000) $3,819 Avg Close — Range —
Q4 2017
Shares 830,265 Value ($000) $4,367 Avg Close — Range —
Q3 2017
Shares 790,833 Value ($000) $4,848 Avg Close — Range —
Q2 2017
Shares 751,220 Value ($000) $5,431 Avg Close — Range —
Q1 2017
Shares 667,163 Value ($000) $4,249 Avg Close — Range —
Q4 2016
Shares 615,471 Value ($000) $4,419 Avg Close — Range —
Q3 2016
Shares 649,531 Value ($000) $6,080 Avg Close — Range —
Q2 2016
Shares 603,652 Value ($000) $3,815 Avg Close — Range —
Q1 2016
Shares 549,949 Value ($000) $3,035 Avg Close — Range —
Q4 2015
Shares 405,401 Value ($000) $2,261 Avg Close — Range —
Q3 2015
Shares 348,581 Value ($000) $2,949 Avg Close — Range —
Q2 2015
Shares 337,200 Value ($000) $5,097 Avg Close — Range —
Q1 2015
Shares 251,240 Value ($000) $4,022 Avg Close — Range —
Q4 2014
Shares 248,550 Value ($000) $4,429 Avg Close — Range —
Q3 2014
Shares 155,925 Value ($000) $1,565 Avg Close — Range —
Q2 2014
Shares 109,745 Value ($000) $1,713 Avg Close — Range —
Q1 2014
Shares 421,135 Value ($000) $7,816 Avg Close — Range —
Q4 2013
Shares 22,740 Value ($000) $434 Avg Close — Range —