ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

SRB CORP's Holding History (CIK: 0001496228)

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

Q1 2018

Shares 5,367 Value ($000) $219 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 4,428 Value ($000) $189 Avg Close $33.80 Range $31.68 - $35.41

Q3 2016

Shares 4,257 Value ($000) $163 Avg Close $29.26 Range $27.72 - $30.41

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	5,367	$219	$30.84	$28.88 - $33.21
Q4 2017	4,428	$189	$33.80	$31.68 - $35.41
Q3 2016	4,257	$163	$29.26	$27.72 - $30.41