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STOCKHOLDERS' EQUITY (Tables) | 6 Months Ended
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Jun. 30, 2020
STOCKHOLDERS' EQUITY |
Schedule of assumptions |
|  | Six Months Ended June 30, |
|  | 2020 |  |  | 2019 |
Expected term |  | 5.5 - 6.3 years |  |  | 5.8 - 6.3 years |
Volatility |  | 62%-67% |  |  | 54%-62% |
Dividend yield |  | 0.0 |  |  | 0.0 |
Risk-free interest rate |  | 0.38-1.68% |  |  | 1.80-2.92% |
Schedule of compensation expense |
|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Balance at December 31, 2019 |  |  | - |  |  | $ | - |
Granted |  |  | 341,000 |  |  | $ | 2.80 |
Vested |  |  | - |  |  | $ | - |
Forfeited |  |  | (15,000 | ) |  | $ | 2.92 |
Balance at June 30, 2020 |  |  | 326,000 |  |  | $ | 2.80 |
Schedule of option activity |
|  | Shares |  |  | Weighted Average Exercise Price |
Balance at December 31, 2019 |  |  | 5,630,351 |  |  | $ | 4.76 |
Forfeited |  |  | (47,683 | ) |  | $ | 3.51 |
Expired |  |  | (6,763 | ) |  | $ | 4.34 |
Granted |  |  | 1,232,500 |  |  | $ | 2.96 |
Exercised |  |  | (6,626 | ) |  | $ | 2.03 |
Balance at June 30, 2020 |  |  | 6,801,779 |  |  | $ | 4.45 |
Options exercisable |  |  | 4,030,098 |  |  | $ | 5.19 |
Schedule of stock-based compensation expense |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Research and development |  | $ | 105,029 |  |  | $ | 89,543 |  |  | $ | 198,603 |  |  | $ | 176,066 |
Plasma centers |  |  | 8,510 |  |  |  | 13,213 |  |  |  | 15,754 |  |  |  | 24,753 |
Selling, general and administrative |  |  | 539,256 |  |  |  | 569,349 |  |  |  | 1,063,145 |  |  |  | 1,067,820 |
Cost of product revenue |  |  | 62,813 |  |  |  | 54,631 |  |  |  | 114,654 |  |  |  | 95,360 |
Total stock-based compensation expense |  | $ | 715,608 |  |  | $ | 726,736 |  |  | $ | 1,392,156 |  |  | $ | 1,363,999 |

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