MERRIMACK PHARMACEUTICALS IN

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

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q1 2016
Shares 19,655,000 Value ($000) $29,576 Avg Close — Range —
Q4 2015
Shares 19,655,000 Value ($000) $29,054 Avg Close — Range —
Q3 2015
Shares 21,655,000 Value ($000) $33,955 Avg Close — Range —
Q2 2015
Shares 26,155,000 Value ($000) $54,923 Avg Close — Range —
Q1 2015
Shares 32,155,000 Value ($000) $64,537 Avg Close — Range —
Q4 2014
Shares 33,655,000 Value ($000) $63,761 Avg Close — Range —
Q3 2014
Shares 33,655,000 Value ($000) $52,453 Avg Close — Range —
Q2 2014
Shares 24,650,000 Value ($000) $33,331 Avg Close — Range —
Q1 2014
Shares 20,000,000 Value ($000) $20,265 Avg Close — Range —
Q4 2013
Shares 9,000,000 Value ($000) $9,433 Avg Close — Range —
Q3 2013
Shares 9,000,000 Value ($000) $8,138 Avg Close — Range —