ONYX PHARMACEUTICALS INC

CUSIP: 683399109 Class: COM

BROWN BROTHERS HARRIMAN & CO's Holding History (CIK: 0000014661)

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

Q2 2013
Shares 335 Value ($000) $29 Avg Close — Range —
Q1 2013
Shares 335 Value ($000) $30 Avg Close — Range —