MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328100 Class: CMN

VIRGINIA RETIREMENT SYSTEMS ET AL's Holding History (CIK: 0001005354)

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

Q3 2014
Shares 22,500 Value ($000) $198 Avg Close — Range —
Q2 2014
Shares 27,500 Value ($000) $200 Avg Close — Range —