MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2015
Shares 145,534 Value ($000) $1,150 Avg Close — Range —
Q3 2015
Shares 145,948 Value ($000) $1,242 Avg Close — Range —
Q2 2015
Shares 460,570 Value ($000) $5,695 Avg Close — Range —
Q1 2015
Shares 357,321 Value ($000) $4,245 Avg Close — Range —
Q4 2014
Shares 154,461 Value ($000) $1,745 Avg Close — Range —