X0202 4 2007-07-31 0 0000054991 KEITHLEY INSTRUMENTS INC KEI 0001198932 BACHMAN BRIAN R KEITHLEY INSTRUMENTS, INC. 28775 AURORA ROAD SOLON OH 44139 1 0 0 0 Common Shares 1000 D Common Shares 2007-07-31 4 A 0 1319 0.00 A 8424 D Common Stock Option 17.7813 2000-08-13 2010-02-12 Common Stk 10000 10000 D Common Stock Option 36.85 2001-08-18 2011-02-17 Common Stk 10000 10000 D Common Stock Option 19.23 2002-08-17 2012-02-16 Common Stk 10000 10000 D Common Stock Option 10.70 2003-08-16 2013-02-15 Common Stk 10000 10000 D Common Stock Option 23.13 2004-08-15 2014-02-14 Common Stk 10000 10000 D Common Stock Option 16.67 2005-05-13 2015-02-12 Common Stk 10000 10000 D Phantom Stock Units Common Stk 4004.82 4004.82 D IRA Phantom shares were acquired on various dates (beginning 2/20/2002) with prices ranging from $10.17 to $31.70. The phantom stock units were accrued under the Keithley Instruments, Inc. Deferred Stock Plan and are to be settled in cash or common stock to the reporting person on the exercisable date per their deferral election. Mark J. Plush, Attorney-in Fact 2007-07-31