MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

Spark Investment Management LLC's Holding History (CIK: 0001554871)

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

Q4 2015
Shares 99,400 Value ($000) $785 Avg Close — Range —
Q2 2015
Shares 19,700 Value ($000) $243 Avg Close — Range —
Q1 2015
Shares 234,100 Value ($000) $2,781 Avg Close — Range —
Q4 2014
Shares 184,600 Value ($000) $2,087 Avg Close — Range —
Q3 2014
Shares 90,500 Value ($000) $793 Avg Close — Range —