Stock Options, Restricted Stock Units And Warrants (Tables)
|
6 Months Ended |
Jun. 30, 2022 |
Share-Based Payment Arrangement [Abstract] |
|
Schedule of stock based compensation |
|
|
Three months ended June 30, |
|
|
Six months ended June 30, |
|
|
|
2022 |
|
|
2021 |
|
|
2022 |
|
|
2021 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Research and development expenses |
|
$ |
445 |
|
|
$ |
32 |
|
|
$ |
500 |
|
|
$ |
614 |
|
Selling, general and administrative expenses |
|
|
1,003 |
|
|
|
2,551 |
|
|
|
2,031 |
|
|
|
5,435 |
|
Total stock-based compensation |
|
$ |
1,448 |
|
|
$ |
2,583 |
|
|
$ |
2,531 |
|
|
$ |
6,049 |
|
|
Schedule of estimation of fair value of stock-based compensation |
|
|
Three months ended
June 30, |
|
Six months ended
June 30, |
|
|
2022 |
|
2021 |
|
2022 |
|
2021 |
Dividend yield |
|
0% |
|
0% |
|
0% |
|
0% |
Expected price volatility |
|
91.7% |
|
50.0% |
|
91.7% |
|
50.0% |
Risk free interest rate |
|
3.25% |
|
0.35% - 0.90% |
|
3.25% |
|
0.22-0.94% |
Expected term |
|
5.0-7.0 years |
|
3.0-5.0 years |
|
5.0-7.0 years |
|
2.5-7.0 years |
|
Schedule of stock options |
|
|
Shares Underlying
Options |
|
|
Weighted Average
Exercise Price |
|
|
Weighted Average
Remaining
Contractual Term (Years) |
|
|
Aggregate Intrinsic
Value |
|
Outstanding at December 31, 2021 |
|
|
11,135,432 |
|
|
$ |
2.85 |
|
|
|
7.6 |
|
|
$ |
13,031 |
|
Granted |
|
|
65,000 |
|
|
$ |
1.12 |
|
|
|
9.9 |
|
|
|
|
|
Canceled |
|
|
(652,776 |
) |
|
$ |
3.50 |
|
|
|
- |
|
|
|
|
|
Forfeited |
|
|
(1,476,670 |
) |
|
$ |
2.60 |
|
|
|
- |
|
|
|
|
|
Outstanding at June 30, 2022 |
|
|
9,070,986 |
|
|
$ |
2.83 |
|
|
|
6.9 |
|
|
$ |
510 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Exercisable at June 30, 2022 |
|
|
8,395,464 |
|
|
$ |
2.78 |
|
|
|
6.7 |
|
|
$ |
510 |
|
|
Schedule of restricted stock unit |
|
|
Number of Shares |
|
|
Weighted Average Grant-Date Fair Value |
|
Unvested at December 31, 2021 |
|
|
1,939,683 |
|
|
$ |
3.40 |
|
Granted |
|
|
138,850 |
|
|
$ |
1.48 |
|
Vested |
|
|
(1,561,904 |
) |
|
$ |
3.88 |
|
Unvested at June 30, 2022 |
|
|
516,629 |
|
|
$ |
4.28 |
|
|
Schedule of warrant activity |
|
|
Shares Underlying Warrants |
|
|
Weighted Average Exercise Price |
|
|
Weighted Average Remaining Contractual Term (Years) |
|
|
Aggregate Intrinsic Value |
|
Outstanding at December 31, 2021 |
|
|
4,525,177 |
|
|
$ |
2.65 |
|
|
|
4.0 |
|
|
$ |
7,088 |
|
Issued |
|
|
200,000 |
|
|
$ |
2.00 |
|
|
|
|
|
|
|
|
|
Outstanding at June 30, 2022 |
|
|
4,725,177 |
|
|
$ |
2.62 |
|
|
|
3.5 |
|
|
$ |
611 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Exercisable at June 30, 2022 |
|
|
1,175,913 |
|
|
$ |
0.33 |
|
|
|
3.6 |
|
|
$ |
611 |
|
|
Schedule of estimated the fair value of the warrants |
|
|
Six months ended
June 30, |
|
|
|
2022 |
|
|
2021 |
|
|
|
|
|
|
|
|
Expected price volatility |
|
|
103.0 |
% |
|
|
50.0 |
% |
Risk free interest rate |
|
|
2.2 |
% |
|
|
0.4 |
% |
Expected term (years) |
|
|
5.0 |
|
|
|
5.0 |
|
|