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 |
Options to Purchase Common Stock
|
12/15/1999 |
12/14/2009 |
Common Stock
|
7,962
(2)
|
$
4.3956
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
03/31/2000 |
03/30/2010 |
Common Stock
|
283
(2)
|
$
4.3956
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
06/30/2000 |
06/29/2010 |
Common Stock
|
569
(2)
|
$
4.3956
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
09/30/2000 |
09/29/2010 |
Common Stock
|
626
(2)
|
$
4.2582
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
12/31/2000 |
12/30/2010 |
Common Stock
|
682
(2)
|
$
4.6044
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
03/31/2001 |
03/30/2011 |
Common Stock
|
569
(2)
|
$
4.6703
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
06/30/2001 |
06/29/2011 |
Common Stock
|
471
(2)
|
$
8.4615
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
09/30/2001 |
09/29/2011 |
Common Stock
|
625
(2)
|
$
8.8462
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
12/31/2001 |
12/30/2011 |
Common Stock
|
739
(2)
|
$
7.8077
(2)
|
D
|
Â
|
Options to Purchase Common Stock
|
07/01/2004 |
06/30/2014 |
Common Stock
|
520
(2)
|
$
13.8615
(2)
|
D
|
Â
|