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SHARE CAPITAL (Tables) | 12 Months Ended
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Dec. 31, 2021
SHARE CAPITAL |
Schedule of Options and Restricted Stocks Granted | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | No. of options or | ​ | ​ | ​ | ​ | ​ | ​ | Fair value | ​ | ​
​ | ​ | restricted stock | ​ | Exercise | ​ | Vesting | ​ | at grant (U.S. dollars | ​ | Expiration
Year of grant | ​ | granted | ​ | price | ​ | period | ​ | in thousands) | ​ | period
2019 | ​ | 160,000 | ​ | $ | 4.69 | ​ | 4 years | ​ | $ | 449 | ​ | 10 years
2019 | ​ | 80,000 | ​ | $ | 2.00 | ​ | 4 years | ​ | $ | 97 | ​ | 10 years
2020 | ​ | 196,995 | ​ | $ | 3.59 | ​ | 4 years | ​ | $ | 482 | ​ | 10 years
2020 | ​ | 760,311 | ​ | $ | 3.66 | ​ | 4 years | ​ | $ | 1,893 | ​ | 10 years
2020 | ​ | 129,771 | ​ | $ | 3.73 | ​ | 4 years | ​ | $ | 329 | ​ | 10 years
2020 | ​ | 694,073 | ​ | $ | n/a | ​ | 4 years | ​ | $ | 2,492 | ​ | 10 years
2020 | ​ | 122,656 | ​ | $ | 3.59 | ​ | 4 years | ​ | $ | 299 | ​ | 10 years
2021 | ​ | 50,000 | ​ | $ | 1.57 | ​ | 4 years | ​ | $ | 55 | ​ | 10 years
Summary of Stock Option Activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31, 2021
​ |  | ​ |  | Weighted
​ | ​ | Number | ​ | average
​ | ​ | of | ​ | exercise
​ | ​ | options | ​ | price
Outstanding at beginning of year |  | 2,087,275 | ​ | $ | 5.66
Changes during the year: |  |  | ​ |  |
Granted |  | 50,000 | ​ |  | 1.57
Forfeited and expired |  | 318,255 | ​ |  | 11.00
Outstanding at end of year |  | 1,819,020 | ​ | $ | 4.61
Exercisable at end of year |  | 961,940 | ​ | $ | 5.47
Summary of Restricted Stock Activity | ​
​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, 2021 | ​
​ | ​ | Number of Restricted Stock | ​
Outstanding at beginning of year | ​ | 624,580 | ​
Changes during the year: | ​ | ​ | ​
Vested | ​ | 166,553 | ​
Non vested at end of year | ​ | 458,027 | ​
Summary of Options Granted to Consultants, Directors, and Other Service Providers | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31, 2021
​ | ​ | ​ | ​ | Weighted
​ | ​ | Number | ​ | average
​ | ​ | of | ​ | exercise
​ | ​ | options | ​ | price
Outstanding at beginning of year |  | 464,375 | ​ | $ | 3.74
Changes during the year: |  |  | ​ |  |
Expired |  | 24,375 | ​ |  | 5.60
Outstanding at end of year |  | 440,000 | ​ |  | 3.63
Exercisable at end of year |  | 192,500 | ​ | $ | 3.63
Summary of Share Options Outstanding and Exercisable |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021
​ | ​ | Options outstanding | ​ | Options exercisable
​ |  | Number of |  | Weighted |  | ​ |  | Weighted
​ | ​ | options | ​ | average | ​ | ​ | ​ | average
​ | ​ | outstanding | ​ | remaining | ​ | Number of | ​ | remaining
Exercise | ​ | at end of | ​ | contractual | ​ | options | ​ | contractual
prices | ​ | year | ​ | life | ​ | exercisable* | ​ | life
$1.57 | ​ | 50,000 | ​ | 9.57 | ​ | 3,125 | ​ | 9.57
$2.00 |  | 80,000 |  | 7.73 |  | 45,000 |  | 7.73
$3.55 | ​ | 200,000 | ​ | 8.06 | ​ | 87,500 | ​ | 8.06
$3.59 | ​ | 319,651 | ​ | 8.51 | ​ | 112,203 | ​ | 8.50
$3.66 | ​ | 641,718 | ​ | 7.71 | ​ | 280,835 | ​ | 6.74
$3.70 | ​ | 240,000 | ​ | 8.10 | ​ | 105,000 | ​ | 8.10
$3.73 | ​ | 129,771 | ​ | 8.52 | ​ | 40,553 | ​ | 8.52
$4.69 |  | 160,000 |  | 7.50 |  | 100,000 |  | 7.50
$5.10 |  | 215,030 |  | 5.69 |  | 181,749 |  | 5.50
$5.60 |  | 130,000 |  | 6.71 |  | 105,625 |  | 6.71
$17.20 |  | 92,850 |  | 2.93 |  | 92,850 |  | 2.93
​ |  | 2,259,020 | ​ | ​ |  | 1,154,440 | ​ | ​
Schedule of Stock-Based Compensation Expense in Statement of Operations |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31,
(U.S. dollars in thousands) |  | 2019 |  | 2020 |  | 2021
Cost of goods sold | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 269
Research and development expenses | ​ | $ | 513 | ​ | $ | 1,036 | ​ | ​ | 648
Selling, general and administrative expenses | ​ |  | 322 | ​ |  | 2,090 | ​ |  | 1,458
​ | ​ | $ | 835 | ​ | $ | 3,126 | ​ | $ | 2,375

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