Annual report [Section 13 and 15(d), not S-K Item 405]

Consolidated Statements of Stockholders' Deficit

v3.25.2
Consolidated Statements of Stockholders' Deficit - USD ($)
shares in Thousands, $ in Thousands
Preferred stock
Common stock
Treasury stock
Additional paid-in capital
Accumulated deficit
Total
Beginning balance at May. 31, 2023   $ 919   $ 731,270 $ (841,690) $ (109,501)
Beginning balance (shares) at May. 31, 2023 34 919,053        
Beginning balance treasury stock (shares) at May. 31, 2023     443      
Issuance of stock for convertible note repayment   $ 34   5,216   5,250
Issuance of stock for convertible note repayment (in shares)   34,309        
Loss on induced conversion       6,680   6,680
Warrants issued in note offering       359   359
Note Conversion   $ 24   7,126   7,150
Note Conversion (in shares)   24,410        
Stock issued for compensation   $ 3   487   490
Stock issued for compensation (in shares)   2,608        
Stock issued for private offering   $ 76   21,621   21,697
Stock issued for private offering (in shares)   75,622        
Discount related to private offering modification       137   137
Warrant exercises   $ 3   297   300
Warrant exercises (in shares)   3,000        
Preferred stock dividends accrued       (1,483)   (1,483)
Reclassification of warrants from liability to equity classified       79   79
Stock-based compensation       1,925   1,925
Net Income (Loss)         (49,841) (49,841)
Ending balance at May. 31, 2024   $ 1,059   773,714 (891,531) $ (116,758)
Ending balance (shares) at May. 31, 2024 34 1,059,002        
Ending balance treasury stock (shares) at May. 31, 2024     443     443
Issuance of stock for convertible note repayment   $ 25   4,068   $ 4,093
Issuance of stock for convertible note repayment (in shares)   25,431        
Loss on induced conversion       1,180   1,180
Stock issued for tender offer   $ 153   13,873   14,026
Stock issued for tender offer (in shares)   152,505        
Issuance costs related to stock issued for tender offer       (3,649)   (3,649)
Stock option exercises   $ 1   105   106
Stock option exercises (in shares)   500        
Stock issued for compensation       100   100
Stock issued for compensation (in shares)   435        
Stock adjustment   $ (1)   1    
Stock adjustment (in shares)   (651) (157)      
Warrant exercises   $ 12   1,069   1,081
Warrant exercises (in shares)   12,238        
Preferred stock dividends accrued       (1,478)   (1,478)
Stock-based compensation       1,512   1,512
Net Income (Loss)         3,745 3,745
Ending balance at May. 31, 2025   $ 1,249   $ 790,495 $ (887,786) $ (96,042)
Ending balance (shares) at May. 31, 2025 34 1,249,460        
Ending balance treasury stock (shares) at May. 31, 2025     286     286