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Share-based Payments (Details Narrative) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2021 | Nov. 30, 2020
Stock options granted | 0 |  | 0 |
Issuance of shares upon exercise of options, shares | 17,081 | 0 | 16,226 | 0
Stock options exercised, weighted average exercise price | $ 0.80 |  | $ 0.80 |
Stock options forfeited | 0 |  | 0 |
Stock options expired | 0 |  | 0 |
Issuances of stock options | 0 | 0 | 0 | 0
Stock options outstanding | 1,570,000 | 1,587,081 | 1,570,000 | 1,587,081
Stock options outstanding, weighted average exercise price | $ 6.87 | $ 6.81 | $ 6.87 | $ 6.81
Stock options exercisable | 1,286,667 | 986,248 | 1,286,667 | 986,248
Stock options exercisable, weighted average exercise price | $ 7.30 | $ 7.05 | $ 7.30 | $ 7.05
Stock-based compensation expense | $ 311,004 | $ 551,720 | $ 1,203,975 | $ 1,662,155
Research and Development Expenses |  |  |  |
Restricted stock unit expense | 362,435 | 350,393 | 1,152,506 | 1,054,682
General and Administrative Expenses |  |  |  |
Restricted stock unit expense | $ 279,574 | $ 546,601 | 209,236 | 1,720,067
Net reversal in stock-based compensation |  |  | $ 935,837 | $ 4,005
Restricted Stock Units |  |  |  |
Restricted stock units granted | 62,638 | 57,859 | 349,580 | 180,232
Restricted stock units granted, weighted average exercise price | $ 10.16 | $ 12.96 | $ 13.64 | $ 10.18
Restricted stock units settled | 200,000 | 200,000 | 231,660 | 224,436
Restricted stock units settled, weighted average exercise price | $ 0.80 | $ 0.80 | $ 1.90 | $ 1.78
Restricted stock units forfeited | 17,988 | 0 | 313,512 | 2,989
Restricted stock units forfeited, weighted average exercise price | $ 8.73 | $ 0 | $ 7.97 | $ 8.78
Restricted stock units outstanding | 4,014,928 | 4,171,609 | 4,014,928 | 4,171,609
Restricted stock units vested |  | 691,327 | 525,313 |
Restricted stock unit expense | $ 331,005 | $ 345,274 | $ 157,769 | $ 1,028,152
Net reversal in expenses attributable to RSUs |  |  | $ 963,022 | $ 4,005

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