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 |
Series I Convertible Preferred Stock
|
Â
(1)
|
Â
(1)
|
Common Stock
|
9,156
|
$
(1)
|
D
|
Â
|
Stock Option (right to purchase)
|
01/01/2010 |
01/02/2019 |
Common Stock
|
4,576
|
$
5.76
|
D
|
Â
|
Stock Option (right to purchase)
|
01/16/2009 |
01/17/2019 |
Common Stock
|
375
|
$
5.76
|
D
|
Â
|
Stock Option (right to purchase)
|
01/01/2011 |
01/02/2020 |
Common Stock
|
4,576
|
$
5.76
|
D
|
Â
|
Stock Option (right to purchase)
|
01/01/2010 |
01/02/2020 |
Common Stock
|
375
|
$
5.76
|
D
|
Â
|
Stock Option (right to purchase)
|
01/01/2012 |
01/01/2021 |
Common Stock
|
4,576
|
$
6.13
|
D
|
Â
|
Stock Option (right to purchase)
|
12/31/2012 |
01/01/2022 |
Common Stock
|
4,726
|
$
6.13
|
D
|
Â
|
Stock Option (right to purchase)
|
01/26/2012 |
01/26/2022 |
Common Stock
|
412
|
$
6.13
|
D
|
Â
|
Stock Option (right to purchase)
|
02/01/2012 |
02/01/2022 |
Common Stock
|
412
|
$
6.13
|
D
|
Â
|
Stock Option (right to purchase)
|
06/21/2012 |
06/22/2022 |
Common Stock
|
412
|
$
7.53
|
D
|
Â
|
Stock Option (right to purchase)
|
07/03/2012 |
07/04/2022 |
Common Stock
|
412
|
$
7.53
|
D
|
Â
|
Stock Option (right to purchase)
|
10/03/2012 |
10/04/2022 |
Common Stock
|
412
|
$
13.28
|
D
|
Â
|
Stock Option (right to purchase)
|
12/17/2012 |
12/18/2022 |
Common Stock
|
412
|
$
13.28
|
D
|
Â
|
Stock Option (right to purchase)
|
01/01/2014 |
01/02/2023 |
Common Stock
|
5,026
|
$
13.28
|
D
|
Â
|
Stock Option (right to purchase)
|
01/01/2013 |
01/02/2023 |
Common Stock
|
7,501
|
$
13.28
|
D
|
Â
|
Stock Option (right to purchase)
|
02/01/2013 |
02/02/2023 |
Common Stock
|
450
|
$
13.28
|
D
|
Â
|
Stock Option (right to purchase)
|
03/14/2013 |
03/15/2023 |
Common Stock
|
450
|
$
13.28
|
D
|
Â
|
Stock Option (right to purchase)
|
04/22/2013 |
04/23/2023 |
Common Stock
|
450
|
$
14.74
|
D
|
Â
|
Stock Option (right to purchase)
|
04/26/2013 |
04/27/2023 |
Common Stock
|
450
|
$
14.74
|
D
|
Â
|
Stock Option (right to purchase)
|
06/07/2013 |
06/08/2023 |
Common Stock
|
450
|
$
14.74
|
D
|
Â
|
Stock Option (right to purchase)
|
06/11/2013 |
06/12/2023 |
Common Stock
|
450
|
$
14.74
|
D
|
Â
|
Stock Option (right to purchase)
|
06/17/2013 |
06/18/2023 |
Common Stock
|
450
|
$
14.74
|
D
|
Â
|