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 |
Non-qualified Stock Option (right to buy)
|
11/17/2001(2)
|
11/17/2008 |
Common Stock
|
4,392
|
$
3.81
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
11/17/2001(2)
|
11/17/2008 |
Common Stock
|
36,827
|
$
3.81
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
04/27/2002(2)
|
04/27/2009 |
Common Stock
|
4,679
|
$
5.73
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/27/2002(2)
|
04/27/2009 |
Common Stock
|
9,255
|
$
5.73
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
04/25/2003(2)
|
04/25/2010 |
Common Stock
|
5,102
|
$
5.71
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/25/2003(2)
|
04/25/2010 |
Common Stock
|
10,197
|
$
5.71
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/16/2004(2)
|
04/16/2011 |
Common Stock
|
13,316
|
$
7.36
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/30/2005(2)
|
04/30/2012 |
Common Stock
|
7,478
|
$
13.03
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
11/15/2005(2)
|
11/15/2012 |
Common Stock
|
11,375
|
$
10.75
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
11/15/2005(2)
|
11/15/2012 |
Common Stock
|
10,052
|
$
10.75
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
04/10/2006(2)
|
04/10/2013 |
Common Stock
|
8,825
|
$
12.09
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/10/2006(2)
|
04/10/2013 |
Common Stock
|
4,413
|
$
12.09
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
08/20/2006(2)
|
08/20/2013 |
Common Stock
|
19,857
|
$
10.97
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
08/20/2006(2)
|
08/20/2013 |
Common Stock
|
4,256
|
$
10.97
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
04/29/2007(2)
|
04/29/2014 |
Common Stock
|
8,150
|
$
14.22
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/29/2007(2)
|
04/29/2014 |
Common Stock
|
4,076
|
$
14.22
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
04/06/2008(2)
|
04/06/2015 |
Common Stock
|
4,089
|
$
21.65
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/06/2008(2)
|
04/06/2015 |
Common Stock
|
4,955
|
$
21.65
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
08/17/2008(2)
|
08/17/2015 |
Common Stock
|
1,649
|
$
21.07
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
08/17/2008(2)
|
08/17/2015 |
Common Stock
|
12,348
|
$
21.07
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/06/2009(2)
|
04/06/2013 |
Common Stock
|
3,329
|
$
23.08
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
04/06/2009(2)
|
04/06/2013 |
Common Stock
|
6,659
|
$
23.08
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
04/05/2010(2)
|
04/05/2014 |
Common Stock
|
12,568
|
$
22.54
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
04/05/2010(2)
|
04/05/2014 |
Common Stock
|
5,464
|
$
22.54
|
D
|
Â
|
Non-qualified Stock Option (right to buy)
|
01/10/2011(2)
|
01/10/2015 |
Common Stock
|
20,804
|
$
22.24
|
D
|
Â
|
Incentive Stock Option (right to buy)
|
01/10/2011(2)
|
01/10/2015 |
Common Stock
|
4,496
|
$
22.24
|
D
|
Â
|