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STOCKHOLDERS' EQUITY (DEFICIT) (Tables)
6 Months Ended
Nov. 30, 2022
Equity [Abstract]  
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity
The following is a summary of the activity and balances for unvested restricted stock awards granted for the six months ended November 30, 2022:

Number of SharesWeighted Average Grant Date Fair Value Per Share
Outstanding as of May 31, 2022$1,366,666 $8.04 
Granted77,500 $2.04 
Vested(952,500)$7.55 
Forfeited— $— 
Outstanding as of November 30, 2022491,666 $8.04 
The following is a summary of the activity and balances for unvested restricted stock units granted for the six months ended November 30, 2022:

Number of SharesWeighted Average Grant Date Fair Value Per Share
Outstanding as of May 31, 20221,791,666 $8.04 
Granted7,897,907 $2.32 
Vested(179,166)$8.04 
Forfeited(445,749)$7.65 
Outstanding as of November 30, 20229,064,658 $3.07