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Equity Incentive Plan (Tables) | 12 Months Ended
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Jun. 30, 2021
Equity Incentive Plan |
Significant assumptions used in valuing options/warrants issued | ​
​ | ​ | ​ | ​
​ | ​ | June 30, 2021 |
Expected volatility | ​ | 100.0 | %
Expected term (years) | ​ | 5.00 | ​
Risk-free interest rate | ​ | 0.90 | %
Dividend yield | ​ | 0.00 | %
Stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | ​ | ​ |  | Weighted
​ | ​ | ​ | ​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Weighted | ​ | Remaining
​ | ​ | Number of | ​ | Average | ​ | Contractual
​ | ​ | Options | ​ | Exercise Price | ​ | Life in Years
Outstanding June 30, 2019 |  | 188 | ​ | $ | 3,259.57 |  | 6.95
Granted |  | 76,950 | ​ | ​ | 12.42 |  |
Exercised |  | (500) | ​ | ​ | 9.70 |  |
Expired |  | (24) | ​ | ​ | 3,280.00 |  |
Outstanding June 30, 2020 |  | 76,614 | ​ | $ | 19.39 |  | 9.67
Granted |  | 69,721 | ​ | ​ | 6.35 |  |
Forfeited/Cancelled |  | (33,380) | ​ | ​ | 8.61 |  |
Expired |  | (3,367) | ​ | ​ | 14.77 |  |
Outstanding at June 30, 2021 |  | 109,588 | ​ | $ | 14.52 |  | 8.07
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable at June 30, 2021 |  | 54,539 | ​ | $ | 20.92 |  | 7.64
Stock options outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ |  |  |  | ​ | ​ |  | Weighted |  |  |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Remaining | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Weighted | ​ | Contractual | ​ | ​ | ​ | ​ | ​
Range of | ​ | Number of | ​ | Average | ​ | Life of | ​ | Number of | ​ | Weighted
Exercise | ​ | Options | ​ | Exercise | ​ | Options | ​ | Options | ​ | Average
Prices | ​ | Outstanding | ​ | Price | ​ | Outstanding | ​ | Exercisable | ​ | Exercise Price
$ | 6.2 - 9.70 |  | 58,316 | ​ | $ | 6.41 |  | 8.33 |  | 16,970 | ​ | $ | 6.51
$ | 9.80 - 14.70 |  | 51,114 | ​ | $ | 13.75 |  | 8.08 |  | 37,411 | ​ | $ | 13.79
$ | 2,800.00 - 4,200.00 |  | 158 | ​ | $ | 3,255.70 |  | 4.80 |  | 158 | ​ | $ | 3,255.70
​ | ​ |  | 109,588 | ​ | $ | 14.52 |  | 8.21 |  | 54,539 | ​ | $ | 20.92
Restricted stock activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average Grant
​ | ​ | Number of | ​ | Date Fair
​ | ​ | Shares | ​ | Value
Unvested at June 30, 2019 |  | 234,623 | ​ | $ | 18.30
Granted |  | 195,292 | ​ | ​ | 10.60
Vested |  | — | ​ | ​ | —
Forfeited |  | (11,461) | ​ | ​ | 17.90
Unvested at June 30, 2020 |  | 418,454 | ​ | $ | 14.69
Granted |  | 1,697,416 | ​ | ​ | 6.52
Vested |  | (160,602) | ​ | ​ | 11.75
Unvested at June 30, 2021 |  | 1,955,268 | ​ | $ | 7.83
Restricted stock units activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average Grant
​ | ​ | Number of | ​ | Date Fair
​ | ​ | Shares | ​ | Value
Unvested at June 30, 2020 |  | — | ​ | $ | —
Granted | ​ | 103,728 | ​ | ​ | 6.96
Vested |  | (9,962) | ​ | ​ | 4.99
Forfeited | ​ | (15,448) | ​ | ​ | 7.00
Unvested at June 30, 2021 |  | 78,318 | ​ | $ | 7.20
Stock-based compensation expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended June 30,
​ | ​ | 2021 |  | 2020
​ | ​ | (In thousands)
Cost of sales | ​ | $ | 16 | ​ | $ | —
Research and development | ​ | ​ | 68 | ​ | ​ | —
Selling and marketing | ​ | ​ | 27 | ​ | ​ | —
General and Administrative | ​ |  | 3,463 | ​ |  | 1,079
Total stock-based compensation expense | ​ | $ | 3,574 | ​ | $ | 1,079

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