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)
|
08/23/2010 |
Common Stock
|
20,000
|
$
2.78
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(1)
|
09/16/2012 |
Common Stock
|
488
|
$
7.85
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(1)
|
03/21/2013 |
Common Stock
|
1,632
|
$
9.8
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(2)
|
02/26/2014 |
Common Stock
|
8,030
|
$
16.63
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(3)
|
09/16/2014 |
Common Stock
|
15,000
|
$
18.39
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(4)
|
02/03/2015 |
Common Stock
|
9,000
|
$
20.61
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(5)
|
02/08/2016 |
Common Stock
|
10,000
|
$
21.25
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(6)
|
02/05/2017 |
Common Stock
|
8,250
|
$
15.91
|
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) |
All Shares are currently exercisable. |
(2) |
6,436 shares are currently exercisable; 531 additional shares become exercisable every 3 months beginning on 8/26/07. |
(3) |
10,311 shares are currently exercisable; 938 additional shares become exercisable every 3 months beginning on 8/1/07. |
(4) |
5,062 shares are currently exercisable; 563 additional shares become exercisable every 3 months beginning on 8/3/07. |
(5) |
3,125 shares are currently exercisable; 625 additional shares become exercisable every 3 months beginning on 8/8/07. |
(6) |
25% of such shares become exercisable on 2/5/08 and 6.25% become exercisable every 3 months thereafter. |