INTEGRYS ENERGY GROUP INC

CUSIP: 45822P105 Class: COM

Employees Retirement System of Texas's Holding History (CIK: 0001398739)

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

Q1 2015
Shares 5,000 Value ($000) $360 Avg Close — Range —
Q4 2014
Shares 5,000 Value ($000) $389 Avg Close — Range —
Q3 2014
Shares 5,000 Value ($000) $324 Avg Close — Range —
Q2 2014
Shares 5,000 Value ($000) $356 Avg Close — Range —
Q1 2014
Shares 7,000 Value ($000) $418 Avg Close — Range —
Q4 2013
Shares 9,000 Value ($000) $490 Avg Close — Range —
Q3 2013
Shares 9,000 Value ($000) $503 Avg Close — Range —
Q2 2013
Shares 9,000 Value ($000) $527 Avg Close — Range —