XOMA CORP DEL

CUSIP: 98419J107 Class: CMN

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

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

Q4 2013
Shares 3,806,868 Value ($000) $25,620 Avg Close — Range —
Q3 2013
Shares 6,096,634 Value ($000) $27,374 Avg Close — Range —
Q2 2013
Shares 1,200,000 Value ($000) $4,356 Avg Close — Range —