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)
|
08/28/2023 |
Common Stock
|
833
|
$
1.37
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(2)
|
02/02/2024 |
Common Stock
|
37,000
|
$
15.41
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(3)
|
01/25/2025 |
Common Stock
|
44,000
|
$
6.96
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(4)
|
01/07/2026 |
Common Stock
|
44,000
|
$
3.45
|
D
|
Â
|
Stock Option (Right to Buy)
|
Â
(5)
|
07/23/2027 |
Common Stock
|
20,000
|
$
7.65
|
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 vested in four equal quarterly installments following the grant date of August 29, 2013. |
(2) |
The option vested in four equal quarterly installments following the grant date of February 3, 2014. |
(3) |
The option vested in four equal quarterly installments following the grant date of January 26, 2015. |
(4) |
The option vested in four equal quarterly installments following the grant date of January 8, 2016. |
(5) |
10,000 shares subject to the option vested in two equal quarterly installments on October, 24, 2017 and January 24, 2018. The remaining 10,000 shares subject to the option vest in two equal quarterly installments on April 24, 2018 and July 24, 2018. |