MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

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

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

Q3 2016
Shares 277,641 Value ($000) $1,763 Avg Close — Range —
Q3 2015
Shares 329,361 Value ($000) $2,803 Avg Close — Range —
Q2 2015
Shares 494,325 Value ($000) $6,112 Avg Close — Range —
Q3 2014
Shares 176,647 Value ($000) $1,551 Avg Close — Range —
Q2 2014
Shares 77,585 Value ($000) $566 Avg Close — Range —