MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q2 2017
Shares 124,036 Value ($000) $153 Avg Close — Range —
Q1 2017
Shares 40,402 Value ($000) $124 Avg Close — Range —
Q4 2016
Shares 61,304 Value ($000) $250 Avg Close — Range —
Q3 2016
Shares 74,116 Value ($000) $470 Avg Close — Range —
Q2 2016
Shares 6,836 Value ($000) $36 Avg Close — Range —
Q1 2016
Shares 7,644 Value ($000) $63 Avg Close — Range —
Q4 2015
Shares 12,824 Value ($000) $101 Avg Close — Range —
Q2 2015
Shares 6,346 Value ($000) $78 Avg Close — Range —