X0202 3 2006-03-15 0 0000726990 AMERICANWEST BANCORPORATION AWBC 0001356780 Armijo J Frank 41 W. RIVERSIDE AVE SUITE 400 SPOKANE WA 99201 1 0 0 0 Common Stock 4392 D Stock Option (right to buy) 16.63 2004-01-21 2014-01-21 Common Stock 180 D Stock Option (right to buy) 17.74 2005-01-19 2015-01-19 Common Stock 722 D Mr. Armijo previosuly held 2,435 shares of Columbia Trust Bancorp common stock. Effective with the close of the merger; March 15, 2006 the shares of common stock were converted at an exchange rate of 1.8035. Mr. Armijo previously held 100 stock options at an option price of $30.00 to purchase shares of Columbia Trust Bancorp common stock. Effective with the close of the merger, March 15, 2006, the stock options were converted at an exchange rate of 1.8035. Mr. Armijo previously held 400 stock options at an option price of $32.00 to purchase shares of Columbia Trust Bancorp common stock. Effective with the close of the merger, March 15, 2006, the stock options were converted at an exchange rate of 1.8035. /s/ Diane L. Kelleher, Pursuant to Power of Attorney on File 2006-03-20