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 |
Stock Option (right to buy)
|
Â
(1)
|
10/31/2007 |
Common Stock
|
5,000
|
$
33.25
|
D
|
Â
|
Stock Option (right to buy)
|
Â
(1)
|
10/15/2007 |
Common Stock
|
1,250
|
$
18.19
|
D
|
Â
|
Stock Option (right to buy)
|
09/29/2001 |
09/29/2010 |
Common Stock
|
4,000
|
$
3.47
|
D
|
Â
|
Stock Option (right to buy)
|
Â
(2)
|
02/01/2011 |
Common Stock
|
1,000
|
$
18.19
|
D
|
Â
|
Stock Option (right to buy)
|
Â
(2)
|
02/01/2011 |
Common Stock
|
4,000
|
$
33.25
|
D
|
Â
|
Stock Option (right to buy)
|
Â
(1)
|
09/20/2011 |
Common Stock
|
25,000
|
$
3.15
|
D
|
Â
|
Stock Option (right to buy)
|
Â
(3)
|
03/29/2014 |
Common Stock
|
27,362
|
$
2.72
|
D
|
Â
|
Stock Option (right to buy)
|
Â
(4)
|
03/29/2014 |
Common Stock
|
17,139
|
$
2.72
|
D
|
Â
|
Stock Option (right to buy)
|
Â
(3)
|
03/29/2014 |
Common Stock
|
75,988
|
$
2.72
|
D
|
Â
|
Stock Option (right to buy)
|
Â
(5)
|
03/29/2014 |
Common Stock
|
10,003
|
$
2.72
|
D
|
Â
|
* |
If the form is filed by more than one reporting person, see Instruction 5(b)(v). |
** |
Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). |
(1) |
The option vests and becomes exercisable annually at a rate of 20% of the shares subject to the option. |
(2) |
The option vested and became exercisable at a rate of 50% of the shares on the date of grant, 25% of the shares on 12/31/2001 and the remaining 25% of the shares on 12/31/2002. |
(3) |
The option vests and becomes exercisable at a rate of 1/12th per quarter for a period of 3 years. |
(4) |
The option vests and becomes exercisable in equal installments over a period of 9 months. |
(5) |
The option vests and becomes exercisable based on certain milestones assigned by the Board of Directors. |