| Summary of option activities |
| |
|
Number of Units |
|
|
Weighted
Average
Exercise
Price |
|
|
Weighted
Average
Remaining
Contractual
Term
(in years) |
|
|
Aggregate
Intrinsic
Value |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Outstanding, December 31, 2012 |
|
|
12,770,637 |
|
|
$ |
0.97 |
|
|
|
4.48 |
|
|
$ |
6,114,768 |
|
| Granted |
|
|
329,866 |
|
|
|
7.47 |
|
|
|
6.40 |
|
|
|
- |
|
| Exercised |
|
|
(2,403,429 |
) |
|
|
1.58 |
|
|
|
- |
|
|
|
- |
|
| Forfeited |
|
|
(1,023,784 |
) |
|
|
|
|
|
|
- |
|
|
|
- |
|
| Outstanding, December 31, 2013 |
|
|
9,673,290 |
|
|
$ |
1.06 |
|
|
|
4.89 |
|
|
$ |
47,396,307 |
|
| Granted |
|
|
491,928 |
|
|
|
8.33 |
|
|
|
7.90 |
|
|
|
- |
|
| Exercised |
|
|
(2,501,993 |
) |
|
|
0.67 |
|
|
|
- |
|
|
|
- |
|
| Forfeited |
|
|
(29,167 |
) |
|
|
6.70 |
|
|
|
- |
|
|
|
- |
|
| Outstanding, December 31, 2014 |
|
|
7,634,058 |
|
|
|
1.64 |
|
|
|
3.97 |
|
|
|
34,317,224 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercisable, December 31, 2014 |
|
|
7,349,058 |
|
|
$ |
1.40 |
|
|
|
3.76 |
|
|
$ |
34,283,224 |
|
|
| Summary of option activities |
| |
|
Number of Units |
|
|
Weighted
Average
Exercise
Price |
|
|
Weighted
Average
Remaining
Contractual
Term
(in years) |
|
|
Aggregate
Intrinsic
Value |
|
| Outstanding, December 31, 2012 |
|
|
2,330,134 |
|
|
$ |
0.96 |
|
|
|
8.91 |
|
|
$ |
685,800 |
|
| Granted |
|
|
787,450 |
|
|
|
6.62 |
|
|
|
10.00 |
|
|
|
|
|
| Cancelled |
|
|
(1,115,550 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
| Exercised |
|
|
(16,650 |
) |
|
|
0.78 |
|
|
|
|
|
|
|
|
|
| Outstanding, December 31, 2013 |
|
|
1,985,384 |
|
|
|
3.23 |
|
|
|
8.34 |
|
|
|
5,908,696 |
|
| Issued |
|
|
1,338,100 |
|
|
|
8.86 |
|
|
|
10.00 |
|
|
|
- |
|
| Exercised |
|
|
(310,400 |
) |
|
|
0.95 |
|
|
|
- |
|
|
|
- |
|
| Outstanding, December 31, 2014 |
|
|
3,013,084 |
|
|
|
5.98 |
|
|
|
8.35 |
|
|
|
4,728,842 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercisable, December 31, 2014 |
|
|
714,447 |
|
|
$ |
1.20 |
|
|
|
6.20 |
|
|
$ |
3,357,044 |
|
|