MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

Invesco Ltd.'s Holding History (CIK: 0000914208)

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

Q2 2015
Shares 242,810 Value ($000) $3,002 Avg Close — Range —
Q1 2015
Shares 394,506 Value ($000) $4,687 Avg Close — Range —
Q4 2014
Shares 324,918 Value ($000) $3,672 Avg Close — Range —
Q3 2014
Shares 201,427 Value ($000) $1,769 Avg Close — Range —
Q2 2014
Shares 392,237 Value ($000) $2,859 Avg Close — Range —
Q4 2013
Shares 6,000 Value ($000) $32 Avg Close — Range —
Q3 2013
Shares 6,000 Value ($000) $23 Avg Close — Range —
Q2 2013
Shares 61,823 Value ($000) $416 Avg Close — Range —