CUBIST PHARMACEUTICALS INC

CUSIP: 229678123 Class: COMMON

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

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

Q4 2014
Shares 87,568 Value ($000) $4 Avg Close — Range —
Q3 2014
Shares 87,568 Value ($000) $10 Avg Close — Range —
Q2 2014
Shares 87,568 Value ($000) $10 Avg Close — Range —
Q1 2014
Shares 87,568 Value ($000) $57 Avg Close — Range —
Q4 2013
Shares 87,568 Value ($000) $118 Avg Close — Range —