X0303 4 2011-01-13 0000054507 WESTAR ENERGY INC /KS WR 0001406082 Lennen C. Michael 818 SW KANSAS AVENUE TOPEKA KS 66612 0 1 0 0 VP, Regulatory Affairs Common Stock, par value $5.00 2011-01-13 4 A 0 1137 0 A 18155 D Common Stock, par value $5.00 2011-01-13 4 F 0 358 25.275 D 17797 D Vesting and distribution of 1,137 performance-based restricted share units that were granted on February 24, 2010 and vested on January 1, 2011. The determination of the number of performance-based restricted share units that vested and that the performance criteria was met was made on January 13, 2011. Under the terms of the grant, the number of shares to be received by the Reporting Person is increased or decreased based on the Issuer's Total Shareholder Return as compared to the Total Shareholder Return for a defined Peer Group of companies for the defined Performance Period. Includes 70 shares aquired through the reinvestment of dividends and 6,250 restricted share units and performance-based restricted share units that are subject to forfeiture. Forfeiture of 358 shares for the payment of taxes upon the vesting and distribution of 1,137 performance-based restricted share units granted on 2/24/10 and described in this report. C. Michael Lennen 2011-01-17