MAXYGEN INC

CUSIP: 577776107 Class: CMN

CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM's Holding History (CIK: 0000919079)

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

Q3 2013
Shares 24,000 Value ($000) $61 Avg Close — Range —
Q2 2013
Shares 26,155 Value ($000) $65 Avg Close — Range —