MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328209 Class: Common Stock

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q1 2018
Shares 10,799 Value ($000) $87 Avg Close — Range —
Q4 2017
Shares 10,799 Value ($000) $111 Avg Close — Range —
Q3 2017
Shares 10,799 Value ($000) $157 Avg Close — Range —