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BRIDGEWAY CAPITAL MANAGEMENT, LLC
> KEI
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2010 | KEITHLEY INSTRUMENTS INC | KEI | 200,000 | 200,000 | 1,766,000 | 1,766,000 | $8.83 |
| 12/31/2008 | KEITHLEY INSTRUMENTS INC | KEI | 0 | -106,252 | 0 | -1,625,000 | |
| 06/30/2007 | KEITHLEY INSTRUMENTS INC | KEI | 0 | -106,252 | 0 | -1,625,000 | |
| 03/31/2007 | KEITHLEY INSTRUMENTS INC | KEI | 106,252 | 19,700 | 1,625,000 | 487,000 | $15.29 |
| 12/31/2006 | KEITHLEY INSTRUMENTS INC | KEI | 86,552 | 0 | 1,138,000 | 34,000 | $13.15 |
| 09/30/2006 | KEITHLEY INSTRUMENTS INC | KEI | 86,552 | 0 | 1,104,000 | 2,000 | $12.76 |
| 06/30/2006 | KEITHLEY INSTRUMENTS INC | KEI | 86,552 | -21,048 | 1,102,000 | -551,000 | $12.73 |
| 03/31/2006 | KEITHLEY INSTRUMENTS INC | KEI | 107,600 | 83,800 | 1,653,000 | 1,320,000 | $15.36 |
| 12/31/2005 | KEITHLEY INSTRUMENTS INC | KEI | 23,800 | 23,800 | 333,000 | 333,000 | $13.99 |
| 03/31/2005 | KEITHLEY INSTRUMENTS INC | KEI | 0 | -16,300 | 0 | -321,000 | |
| 12/31/2004 | KEITHLEY INSTRUMENTS INC | KEI | 16,300 | 16,300 | 321,000 | 321,000 | $19.69 |
| 03/31/2001 | KEITHLEY INSTRUMENTS INC | KEI | 0 | -56,900 | 0 | -2,450,000 | |
| 12/31/2000 | KEITHLEY INSTRUMENTS INC | KEI | 56,900 | 18,000 | 2,450,000 | -274,000 | $43.06 |
| 09/30/2000 | KEITHLEY INSTRUMENTS INC | KEI | 38,900 | 38,900 | 2,724,000 | 2,724,000 | $70.03 |
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