MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q3 2015
Shares 414,962 Value ($000) $3,531 Avg Close — Range —
Q2 2015
Shares 336,678 Value ($000) $4,163 Avg Close — Range —
Q1 2015
Shares 316,978 Value ($000) $3,766 Avg Close — Range —
Q4 2014
Shares 222,867 Value ($000) $2,519 Avg Close — Range —
Q3 2014
Shares 160,056 Value ($000) $1,405 Avg Close — Range —
Q2 2014
Shares 23,900 Value ($000) $174 Avg Close — Range —
Q1 2014
Shares 172,900 Value ($000) $871 Avg Close — Range —