Stockholders' Equity (Tables)
|
6 Months Ended |
Jun. 30, 2019 |
Stockholders' Equity Note [Abstract] |
|
Schedule of stock-based compensation |
|
|
For the Three Months Ended
June 30, |
|
|
For the Six Months Ended
June 30, |
|
|
|
2019 |
|
|
2018 |
|
|
2019 |
|
|
2018 |
|
Research and development |
|
$ |
237,331 |
|
|
$ |
337,730 |
|
|
$ |
510,142 |
|
|
$ |
1,111,389 |
|
General and administrative |
|
|
426,833 |
|
|
|
470,740 |
|
|
|
917,681 |
|
|
|
675,789 |
|
Total |
|
$ |
664,164 |
|
|
$ |
808,470 |
|
|
$ |
1,427,823 |
|
|
$ |
1,787,178 |
|
|
Schedule of stock option activity |
|
|
|
|
|
|
|
|
Weighted Average |
|
|
|
|
|
|
Stock Options |
|
|
Exercise Price |
|
|
Fair Value |
|
|
Contractual |
|
|
Aggregate |
|
|
|
Outstanding |
|
|
Exercisable |
|
|
Outstanding |
|
|
Exercisable |
|
|
Vested |
|
|
Life (Years) |
|
|
Intrinsic Value |
|
Balance – December 31, 2018 |
|
|
5,488,282 |
|
|
|
4,384,294 |
|
|
$ |
2.10 |
|
|
$ |
1.32 |
|
|
$ |
1.32 |
|
|
|
5.80 |
|
|
$ |
- |
|
Granted |
|
|
2,579,000 |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
Exercised |
|
|
(233,214 |
) |
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
Cancelled |
|
|
(92,254 |
) |
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
Balance – June 30, 2019 |
|
|
7,741,814 |
|
|
|
4,540,410 |
|
|
$ |
2.15 |
|
|
$ |
1.45 |
|
|
$ |
1.45 |
|
|
|
6.27 |
|
|
$ |
2,768,087 |
|
|
Schedule of stock options outstanding and exercisable |
Grant Price |
|
|
Weighted Average |
|
|
Total |
|
|
Number |
|
|
Weighted Average Remaining Contractual |
|
From |
|
|
To |
|
|
Exercise Price |
|
|
Outstanding |
|
|
Exercisable |
|
|
Term |
|
$ |
0.26 |
|
|
$ |
2.02 |
|
|
$ |
0.89 |
|
|
|
3,299,604 |
|
|
|
3,281,062 |
|
|
|
4.06
years |
|
$ |
2.10 |
|
|
$ |
4.60 |
|
|
$ |
2.46 |
|
|
|
3,737,335 |
|
|
|
850,980 |
|
|
|
9.15 years |
|
$ |
5.30 |
|
|
$ |
8.86 |
|
|
$ |
6.60 |
|
|
|
704,875 |
|
|
|
408,368 |
|
|
|
8.86 years |
|
|
|
|
|
|
|
|
|
|
Totals |
|
|
|
7,741,814 |
|
|
|
4,540,410 |
|
|
|
|
|
|
Schedule of warrants activity |
|
|
|
|
|
|
|
|
Weighted Average |
|
|
|
|
|
|
Warrants |
|
|
Exercise Price |
|
|
Fair Value |
|
|
Contractual |
|
|
Aggregate |
|
|
|
Outstanding |
|
|
Exercisable |
|
|
Outstanding |
|
|
Exercisable |
|
|
Vested |
|
|
Life (Years) |
|
|
Intrinsic Value |
|
Balance – December 31, 2018 |
|
|
4,964,205 |
|
|
|
4,907,223 |
|
|
$ |
2.39 |
|
|
$ |
2.39 |
|
|
$ |
1.14 |
|
|
|
2.27 |
|
|
$ |
- |
|
Granted |
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
Exercised |
|
|
(50,000 |
) |
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
Cancelled |
|
|
(6,982 |
) |
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
Balance – June 30, 2019 |
|
|
4,907,223 |
|
|
|
4,907,223 |
|
|
$ |
2.40 |
|
|
$ |
2.40 |
|
|
$ |
1.11 |
|
|
|
1.80 |
|
|
$ |
1,175,115 |
|
|