INTEGRYS ENERGY GROUP INC

CUSIP: 45822P105 Class: COM

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

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

Q1 2015
Shares 151,147 Value ($000) $10,886 Avg Close — Range —
Q4 2014
Shares 153,700 Value ($000) $11,966 Avg Close — Range —
Q3 2014
Shares 152,248 Value ($000) $9,869 Avg Close — Range —
Q2 2014
Shares 145,973 Value ($000) $10,383 Avg Close — Range —
Q1 2014
Shares 143,973 Value ($000) $8,588 Avg Close — Range —
Q4 2013
Shares 143,273 Value ($000) $7,795 Avg Close — Range —
Q3 2013
Shares 142,273 Value ($000) $7,952 Avg Close — Range —
Q2 2013
Shares 137,887 Value ($000) $8,071 Avg Close — Range —
Q1 2013
Shares 136,152 Value ($000) $7,919 Avg Close — Range —