ALLIANT ENERGY CORP — Director's Dealing 2013

May 1, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ALLIANT ENERGY CORP (LNT)
CIK: 0000352541
Period of Report: 2013-04-30

Reporting Person: ALLER THOMAS L (Senior Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-04-30	Common Stock	M	18767	$24.90	Acquired	33905.9	Direct
2013-04-30	Common Stock	M	2887	$25.93	Acquired	36792.9	Direct
2013-04-30	Common Stock	S	18767	$53.00	Disposed	18025.9	Direct
2013-04-30	Common Stock	S	2887	$53.00	Disposed	15138.9	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-04-30	Employee Stock Option (Right to Buy)	$24.90	M	18767	Disposed	2014-01-02	Common Stock (18767)	Direct
2013-04-30	Employee Stock Option (Right to Buy)	$25.93	M	2887	Disposed	2014-02-09	Common Stock (2887)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5072.951	Indirect
Common Stock	1000	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Deferred Common Stock	$0		Common Stock (9304.1203)	9304.1203	Direct

Footnotes

F1: Reflects 401(k) holdings as of this filing date.

F2: Units are to be settled upon reporting person's retirement.