ONYX PHARMACEUTICALS INC

CUSIP: 683399109 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q3 2013
Shares 130,842 Value ($000) $16,312 Avg Close — Range —
Q2 2013
Shares 126,752 Value ($000) $11,005 Avg Close — Range —
Q1 2013
Shares 124,951 Value ($000) $11,103 Avg Close — Range —