ONYX PHARMACEUTICALS INC

CUSIP: 683399109 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q3 2013
Shares 1,161,739 Value ($000) $144,834 Avg Close — Range —
Q2 2013
Shares 3,779,081 Value ($000) $328,101 Avg Close — Range —