INTERSTATE POWER & LIGHT

CUSIP: 461070856 Class: Pfd Stk

PRIVATE TRUST CO NA's Holding History (CIK: 0001277557)

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

Q3 2014
Shares 625 Value ($000) $16 Avg Close — Range —
Q2 2014
Shares 625 Value ($000) $16 Avg Close — Range —
Q1 2014
Shares 625 Value ($000) $14 Avg Close — Range —
Q4 2013
Shares 625 Value ($000) $13 Avg Close — Range —