ONYX PHARMACEUTICALS INC

CUSIP: 683399AB5 Class: CNV

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM's Holding History (CIK: 0001132716)

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

Q2 2013
Shares 8,850,000 Value ($000) $20,226,000 Avg Close — Range —