X0303 4 2011-02-01 0000783325 WISCONSIN ENERGY CORP WEC 0001250991 LEVERETT ALLEN L 231 WEST MICHIGAN STREET MILWAUKEE WI 53203 0 1 0 0 Executive VP & CFO Common Stock 2011-02-01 4 M 0 30500 33.435 A 44881 D Common Stock 2011-02-01 4 S 0 30500 61.00 D 14381 D Common Stock 1223.504 I ERSP Stock Option (right to buy) 33.435 2011-02-01 4 M 0 30500 0 D 2004-12-31 2014-01-02 Common Stock 30500 91510 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 30, 2010. 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 January 31, 2010. By action of the Compensation Committee on December 28, 2004, all options granted to employees of the Issuer, including the reporting person, in 2002, 2003 and 2004, and not otherwise exercisable, became exercisable as of December 31, 2004. /s/ Joshua M. Erickson, as Attorney-in-Fact 2011-02-03