MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328209 Class: Common Stock

HighTower Advisors, LLC's Holding History (CIK: 0001462245)

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

Q4 2018
Shares 15,050 Value ($000) $58 Avg Close — Range —
Q3 2018
Shares 15,150 Value ($000) $81 Avg Close — Range —
Q2 2018
Shares 15,150 Value ($000) $74 Avg Close — Range —
Q1 2018
Shares 30,150 Value ($000) $243 Avg Close — Range —
Q4 2017
Shares 30,150 Value ($000) $310 Avg Close — Range —
Q3 2017
Shares 30,150 Value ($000) $438 Avg Close — Range —