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 |
Employee Stock Option (right to buy)
|
Â
(1)
|
12/01/2014 |
Common Stock
|
64,547
|
$
0.638
|
D
|
Â
|
Employee Stock Option (right to buy)
|
Â
(2)
|
10/20/2015 |
Common Stock
|
36,667
|
$
5.33
|
D
|
Â
|
Employee Stock Option (right to buy)
|
Â
(3)
|
02/28/2016 |
Common Stock
|
33,334
|
$
5.33
|
D
|
Â
|
Employee Stock Option (right to buy)
|
Â
(4)
|
04/25/2017 |
Common Stock
|
80,000
|
$
13.43
|
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) |
These options vest and become exercisable in a series of installments. The first installment, which consisted of 25% of the total aggregate number of options granted, vested on December 1, 2005. The remaining options vest and become exercisable in a series of thirty-five successive equal monthly installments of 2,012 shares, beginning on January 1, 2006, with the final installment of 1,990 shares becoming exercisable on December 1, 2008. |
(2) |
These options vest and become exercisable in a series of installments. The first installment, which consisted of 25% of the total aggregate number of options granted, vested on October 20, 2006. The remaining options vest and become exercisable in a series of thirty-five successive equal monthly installments of 764 shares, beginning on November 1, 2006, with the final installment of 760 shares becoming exercisable on October 1, 2009. |
(3) |
These options vest and become exercisable in a series of installments. The first installment, which consisted of 25% of the total aggregate number of options granted, vested on February 28, 2007. The remaining options vest and become exercisable in a series of thirty-five successive equal monthly installments of 695 shares, beginning on March 1, 2007, with the final installment of 675 shares becoming exercisable on March 1, 2010. |
(4) |
These options vest and become exercisable in a series of installments. The first installment, which consists of 25% of the total aggregate number of options granted, will vest on April 25, 2008. The remaining options vest and become exercisable in a series of thirty-five successive equal monthly installments of 1,667 shares, beginning on May 1, 2008, with the final installment of 1,655 shares becoming exercisable on April 1, 2011. |