X0303 4 2011-01-13 0000054507 WESTAR ENERGY INC /KS WR 0001236789 MOORE WILLIAM B 818 SW KANSAS AVENUE TOPEKA KS 66612 1 1 0 0 President and CEO Common Stock, par value $5.00 2011-01-13 4 A 0 14924 0 A 282657 D Common Stock, par value $5.00 2011-01-13 4 F 0 6186 25.275 D 276471 D Common Stock, par value $5.00 102985 I By trust Common Stock, par value $5.00 1315 I By trust Vesting and distribution of 14,924 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 82,000 restricted share units and performance-based restricted share units that are subject to forfeiture. Forfeiture of 6,186 shares for the payment of taxes upon the vesting and distribution of 14,924 performance-based restricted share units granted to the reporting person on 2/24/10 and described in this report. Shares are held in a trust, of which the reporting person is both a co-trustee and beneficiary of the trust. Shares are held in a trust, of which the reporting person is a co-trustee. William B. Moore 2011-01-17