MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328AA8 Class: NOTE 4.5% 7/1

SILVERBACK ASSET MANAGEMENT LLC's Holding History (CIK: 0001278960)

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

Q1 2016
Shares 13,780,000 Value ($000) $20,739 Avg Close — Range —
Q4 2015
Shares 14,780,000 Value ($000) $21,781 Avg Close — Range —
Q3 2015
Shares 14,500,000 Value ($000) $22,711 Avg Close — Range —
Q2 2015
Shares 16,729,000 Value ($000) $35,081 Avg Close — Range —
Q1 2015
Shares 15,229,000 Value ($000) $30,553 Avg Close — Range —
Q4 2014
Shares 1,500,000 Value ($000) $2,831 Avg Close — Range —
Q3 2014
Shares 3,500,000 Value ($000) $5,455 Avg Close — Range —
Q2 2014
Shares 3,500,000 Value ($000) $4,734 Avg Close — Range —
Q1 2014
Shares 4,000,000 Value ($000) $4,095 Avg Close — Range —
Q4 2013
Shares 4,000,000 Value ($000) $4,200 Avg Close — Range —
Q3 2013
Shares 3,000,000 Value ($000) $2,730 Avg Close — Range —