MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

Paloma Partners Management Co's Holding History (CIK: 0001103882)

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

Q3 2014
Shares 18,822 Value ($000) $166 Avg Close — Range —
Q2 2013
Shares 13,100 Value ($000) $88 Avg Close — Range —