1. Title of Derivative Security (Instr. 4) |
2. Date Exercisable and Expiration Date (Month/Day/Year) |
3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) |
4. Conversion or Exercise Price of Derivative Security |
5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5) |
6. Nature of Indirect Beneficial Ownership (Instr. 5) |
Date Exercisable |
Expiration Date |
Title |
Amount or Number of Shares |
Incentive Stock Option (right to buy)
|
12/07/1996 |
12/07/2005 |
Common Stock
|
27,000
|
$
3.3519
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
02/26/1998 |
02/26/2007 |
Common Stock
|
25,314
|
$
5.7963
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
02/23/1999 |
02/23/2008 |
Common Stock
|
18,000
|
$
8.7222
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
10/23/2006 |
10/23/2012 |
Common Stock
|
1,250
|
$
9.32
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
02/27/2006 |
02/27/2012 |
Common Stock
|
2,500
|
$
13.11
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
07/18/2005 |
07/18/2011 |
Common Stock
|
1,787
|
$
15.02
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
02/28/2005 |
02/28/2011 |
Common Stock
|
3,500
|
$
20.9
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
02/25/2000 |
02/25/2009 |
Common Stock
|
8,955
|
$
23.3125
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
02/23/2001 |
02/23/2010 |
Common Stock
|
3,791
|
$
26.375
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
12/07/1996 |
12/07/2005 |
Common Stock
|
27,000
|
$
3.3519
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
08/01/1998 |
02/26/2007 |
Common Stock
|
25,314
|
$
6.8796
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
02/23/1999 |
02/23/2008 |
Common Stock
|
18,000
|
$
8.7222
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
12/15/2004 |
09/30/2011 |
Common Stock
|
91,241
|
$
9.19
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
10/23/2003 |
10/23/2012 |
Common Stock
|
3,750
|
$
9.32
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
11/08/2004 |
11/08/2012 |
Common Stock
|
18,000
|
$
9.71
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
09/24/2002 |
09/24/2011 |
Common Stock
|
11,600
|
$
10.2
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
02/27/2003 |
02/27/2012 |
Common Stock
|
7,500
|
$
13.11
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
07/18/2002 |
07/18/2011 |
Common Stock
|
56,213
|
$
15.02
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
05/04/2001 |
05/04/2011 |
Common Stock
|
3,000
|
$
20.68
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
02/28/2002 |
02/28/2011 |
Common Stock
|
16,500
|
$
20.9
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
02/25/2000 |
02/25/2009 |
Common Stock
|
15,045
|
$
23.3125
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
11/01/2000 |
11/01/2009 |
Common Stock
|
7,500
|
$
25.9167
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
02/23/2001 |
02/23/2010 |
Common Stock
|
12,710
|
$
26.375
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
12/15/2003 |
12/15/2010 |
Common Stock
|
40,000
|
$
28.75
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
10/25/2001 |
10/25/2010 |
Common Stock
|
5,000
|
$
31.0625
|
D
|
Â
|
Non-Qualified Stock Option (right to buy)
|
04/20/2000 |
04/20/2009 |
Common Stock
|
3,000
|
$
35.5833
|
D
|
Â
|