X0303 4/A 2008-08-11 2008-08-08 0 0000906193 KEY TECHNOLOGY INC KTEC 0001376350 Camp David M C/O KEY TECHNOLOGY, INC. 150 AVERY STREET WALLA WALLA WA 99362 1 1 0 0 President & CEO Common Stock 2008-08-11 4 P 0 500 26.2034 A 45614 D Includes 87 and 83 shares purchased on 3/31/08 and 6/30/08, respectively, under the Key Technology, Inc. Employee Stock Purchase Plan. /s/ David M. Camp by Michele R. Walters, Attorney-in-Fact 2008-08-12