INTEGRYS ENERGY GROUP INC

CUSIP: 45822P105 Class: COM

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q1 2015
Shares 141,380 Value ($000) $10,182 Avg Close — Range —
Q4 2014
Shares 141,421 Value ($000) $11,010 Avg Close — Range —
Q3 2014
Shares 141,421 Value ($000) $9,167 Avg Close — Range —
Q2 2014
Shares 141,421 Value ($000) $10,059 Avg Close — Range —
Q1 2014
Shares 146,660 Value ($000) $8,748 Avg Close — Range —
Q4 2013
Shares 150,883 Value ($000) $8,210 Avg Close — Range —
Q3 2013
Shares 163,259 Value ($000) $9,125 Avg Close — Range —
Q2 2013
Shares 178,078 Value ($000) $10,423 Avg Close — Range —