MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

PRIVATE TRUST CO NA's Holding History (CIK: 0001277557)

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

Q2 2013
Shares 271 Value ($000) $2 Avg Close — Range —
Q1 2013
Shares 271 Value ($000) $2 Avg Close — Range —