PROSENSA HLDG N V

CUSIP: N71546100 Class: COM

DEERFIELD MANAGEMENT COMPANY, L.P.'s Holding History (CIK: 0001009258)

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

Q4 2014
Shares 3,316,434 Value ($000) $62,183 Avg Close — Range —
Q3 2014
Shares 2,598,459 Value ($000) $21,905 Avg Close — Range —
Q2 2014
Shares 2,206,119 Value ($000) $27,846 Avg Close — Range —
Q1 2014
Shares 3,211,372 Value ($000) $18,080 Avg Close — Range —
Q4 2013
Shares 3,119,381 Value ($000) $14,568 Avg Close — Range —
Q3 2013
Shares 3,224,524 Value ($000) $21,314 Avg Close — Range —