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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
783325	Wisconsin Energy Corp	WEC	Electric & Other Services Combined (4931)	391391525

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1542904	H. Susan Martin	231 West Michigan Street Milwaukee WI 53203	Executive Vp & General Counsel	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2012-04-26	3,000	$17.10	5,010	No	4	M	Direct
Common Stock	Disposition	2012-04-26	3,000	$36.25	2,010	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (right to buy)	Disposition	2012-04-26	3,000	$0.00	3,000	$17.10

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
70	2008-01-18	2015-01-18	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	3,022	Indirect	ERSP

Footnotes

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 9, 2012.
Includes shares acquired under Wisconsin Energy Corporation's Employee Retirement Savings Plan (ERSP) in transactions exempt from Section 16(b) pursuant to Rule 16b-3(c) and exempt from reporting pursuant to Rule 16a-3(f)(1)(i)(B). The number of shares in the ERSP attributable to any one participant varies with the price of the Common Stock. The information in this report is based on a plan statement dated as of March 31, 2012.