MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q2 2017
Shares 217,900 Value ($000) $270 Avg Close — Range —
Q1 2017
Shares 104,700 Value ($000) $322 Avg Close — Range —
Q4 2016
Shares 187,400 Value ($000) $765 Avg Close — Range —
Q3 2016
Shares 187,400 Value ($000) $1,190 Avg Close — Range —
Q2 2016
Shares 187,400 Value ($000) $1,010 Avg Close — Range —
Q1 2016
Shares 168,300 Value ($000) $1,409 Avg Close — Range —
Q4 2015
Shares 168,300 Value ($000) $1,330 Avg Close — Range —
Q3 2015
Shares 171,300 Value ($000) $1,458 Avg Close — Range —
Q2 2015
Shares 171,600 Value ($000) $2,122 Avg Close — Range —
Q1 2015
Shares 161,100 Value ($000) $1,914 Avg Close — Range —
Q4 2014
Shares 161,100 Value ($000) $1,820 Avg Close — Range —
Q3 2014
Shares 161,100 Value ($000) $1,414 Avg Close — Range —
Q2 2014
Shares 161,100 Value ($000) $1,174 Avg Close — Range —
Q1 2014
Shares 157,836 Value ($000) $795 Avg Close — Range —
Q4 2013
Shares 108,036 Value ($000) $577 Avg Close — Range —
Q3 2013
Shares 161,736 Value ($000) $615 Avg Close — Range —
Q2 2013
Shares 154,653 Value ($000) $1,041 Avg Close — Range —