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Equity Incentive Plans (Tables) | 6 Months Ended
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Dec. 31, 2021
Equity Incentive Plans |
Stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | ​ | ​ |  | Weighted
​ | ​ | ​ | ​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Weighted | ​ | Remaining
​ | ​ | Number of | ​ | Average | ​ | Contractual
​ | ​ | Options | ​ | Exercise Price | ​ | Life in Years
Outstanding June 30, 2021 |  | 109,588 | ​ | $ | 14.52 |  | 8.07
Forfeited/Cancelled |  | (9,355) | ​ | ​ | 6.35 |  |
Expired |  | (9,502) | ​ | ​ | 8.10 |  |
Outstanding at December 31, 2021 |  | 90,731 | ​ | $ | 16.03 |  | 8.22
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable at December 31, 2021 |  | 47,838 | ​ | $ | 22.99 |  | 8.17
Restricted stock activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average Grant
​ | ​ | Number of | ​ | Date Fair
​ | ​ | Shares | ​ | Value
Unvested at June 30, 2021 |  | 1,955,268 | ​ | $ | 7.83
Granted |  | 295,000 | ​ | ​ | 3.67
Vested |  | (90,836) | ​ | ​ | 7.97
Unvested at December 31, 2021 |  | 2,159,432 | ​ | $ | 7.26
Restricted stock units activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average Grant
​ | ​ | Number of | ​ | Date Fair
​ | ​ | Shares | ​ | Value
Unvested at June 30, 2021 |  | 78,318 | ​ | $ | 7.20
Granted | ​ | 20,000 | ​ | ​ | 1.86
Vested |  | (1,972) | ​ | ​ | 6.04
Forfeited | ​ | (62,922) | ​ | ​ | 7.44
Unvested at December 31, 2021 |  | 33,424 | ​ | $ | 3.61
Stock-based compensation expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended
​ | ​ | December 31, | ​ | December 31,
​ |  | 2021 |  | 2020 | ​ | 2021 |  | 2020
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | (In thousands)
Cost of sales | ​ | $ | 8 | ​ | $ | — | ​ | $ | 17 | ​ | $ | —
Research and development | ​ | ​ | 75 | ​ | ​ | — | ​ | ​ | 394 | ​ | ​ | —
Selling and marketing | ​ | ​ | 19 | ​ | ​ | — | ​ | ​ | 28 | ​ | ​ | —
General and Administrative | ​ |  | 1,127 | ​ |  | 508 | ​ |  | 2,309 | ​ |  | 963
Total stock-based compensation expense | ​ | $ | 1,229 | ​ | $ | 508 | ​ | $ | 2,748 | ​ | $ | 963

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