XML 79 R63.htm IDEA: XBRL DOCUMENT v3.23.2
Schedule of Stock Option Activity (Details)
 12 Months Ended
Apr. 30, 2023
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Shares Underlying Options Outstanding, beginning | shares 1,110,356
Weighted Average Exercise Price, Beginning balance | $ / shares $ 2.34
Weighted Average Remaining Contractual Term (In Years), Beginning 9 years 2 months 12 days
Shares underlying Options Outstanding, Granted | shares 601,089
Weighted Average Exercise Price, Granted | $ / shares $ 0.68
Shares Underlying Options ,Exercised | shares
Weighted Average Exercise Price, Exercised | $ / shares
Shares Underlying Options, Cancelled/forfeited | shares (182,165)
Weighted Average Exercise Price, Cancelled/forfeited | $ / shares $ 1.59
Shares underlying options outstanding, expired | shares (95)
Weighted average exercise price, expired | $ / shares $ 511.12
Shares Underlying Options, ending | shares 1,529,185
Weighted average exercise price, ending balance | $ / shares $ 1.75
Weighted Average Remaining Contractual Term (In Years), Ending 8 years 9 months 18 days
Shares Underlying Options, Exercisable at Ending | shares 513,077
Weighted Average Exercise Price, Exercisable at ending | $ / shares $ 3.22
Weighted Average Remaining Contractual Term (In Years), Exercisable at Ending 7 years 8 months 12 days
Performance Stock Options [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Shares Underlying Options Outstanding, beginning | shares 210,122
Weighted Average Exercise Price, Beginning balance | $ / shares $ 2.20
Weighted Average Remaining Contractual Term (In Years), Beginning 8 years 9 months 18 days
Shares underlying Options Outstanding, Granted | shares
Weighted Average Exercise Price, Granted | $ / shares
Shares Underlying Options ,Exercised | shares
Weighted Average Exercise Price, Exercised | $ / shares
Shares Underlying Options, Cancelled/forfeited | shares (143,455)
Weighted Average Exercise Price, Cancelled/forfeited | $ / shares $ 2.93
Shares Underlying Options, ending | shares 66,667
Weighted average exercise price, ending balance | $ / shares $ 0.62
Weighted Average Remaining Contractual Term (In Years), Ending 8 years 1 month 6 days
Shares Underlying Options, Exercisable at Ending | shares
Weighted Average Exercise Price, Exercisable at ending | $ / shares