Summary of option and warrant activities |
|
|
Number of Units |
|
|
Weighted Average Exercise Price |
|
|
Weighted Average Remaining Contractual Term (in years) |
|
|
Aggregate Intrinsic Value |
|
Outstanding, December 31, 2014 |
|
|
7,698,497 |
|
|
|
1.64 |
|
|
|
3.97 |
|
|
|
34,317,224 |
|
Granted |
|
|
3,333,333 |
|
|
|
6.50 |
|
|
|
|
|
|
|
|
|
Exercised |
|
|
(2,013,360 |
) |
|
|
0.41 |
|
|
|
|
|
|
|
|
|
Outstanding, December 31, 2015 |
|
|
9,018,470 |
|
|
|
3.73 |
|
|
|
2.93 |
|
|
|
10,199,230 |
|
Granted |
|
|
130,000 |
|
|
|
0.96 |
|
|
|
|
|
|
|
|
|
Exercised |
|
|
(183,718 |
) |
|
|
0.90 |
|
|
|
|
|
|
|
|
|
Outstanding, December 31, 2016 |
|
|
8,964,752 |
|
|
|
3.72 |
|
|
|
1.95 |
|
|
|
1,445,786 |
|
Granted |
|
|
18,496,575 |
|
|
|
1.05 |
|
|
|
|
|
|
|
|
|
Exercised |
|
|
(9,364 |
) |
|
|
0.78 |
|
|
|
|
|
|
|
|
|
Cancelled |
|
|
(1,789,623 |
) |
|
|
2.22 |
|
|
|
|
|
|
|
|
|
Outstanding, December 31, 2017 |
|
|
25,662,340 |
|
|
|
1.89 |
|
|
|
3.62 |
|
|
|
995,373 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Exercisable, December 31, 2017 |
|
|
25,462,340 |
|
|
|
1.85 |
|
|
|
3.61 |
|
|
|
995,373 |
|
|
Summary of option and warrant activities |
|
|
Number of Units |
|
|
Weighted Average Exercise Price |
|
|
Weighted Average Remaining Contractual Term (in years) |
|
|
Aggregate Intrinsic Value |
|
Outstanding, December 31, 2014 |
|
|
3,013,084 |
|
|
$ |
5.98 |
|
|
|
8.35 |
|
|
|
4,728,842 |
|
Granted |
|
|
1,554,499 |
|
|
|
2.78 |
|
|
|
|
|
|
|
|
|
Cancelled |
|
|
(576,000 |
) |
|
|
8.70 |
|
|
|
|
|
|
|
|
|
Exercised |
|
|
(20,000 |
) |
|
|
0.78 |
|
|
|
|
|
|
|
|
|
Outstanding, December 31, 2015 |
|
|
3,971,583 |
|
|
$ |
4.34 |
|
|
|
8.01 |
|
|
|
2,964,146 |
|
Granted |
|
|
2,225,000 |
|
|
|
1.92 |
|
|
|
|
|
|
|
|
|
Cancelled |
|
|
(266,485 |
) |
|
|
2.51 |
|
|
|
|
|
|
|
|
|
Exercised |
|
|
(23,212 |
) |
|
|
0.78 |
|
|
|
|
|
|
|
|
|
Outstanding, December 31, 2016 |
|
|
5,906,886 |
|
|
|
3.52 |
|
|
|
7.90 |
|
|
|
51,704 |
|
Granted |
|
|
2,597,500 |
|
|
|
1.32 |
|
|
|
|
|
|
|
|
|
Cancelled |
|
|
(3,329,794 |
) |
|
|
2.85 |
|
|
|
|
|
|
|
|
|
Outstanding, December 31, 2017 |
|
|
5,174,592 |
|
|
|
2.83 |
|
|
|
7.95 |
|
|
|
2,648 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Exercisable, December 31, 2017 |
|
|
2,415,632 |
|
|
|
3.98 |
|
|
|
6.38 |
|
|
|
- |
|
|