Post-effective amendment to a registration statement that is not immediately effective upon filing

Consolidated Balance Sheets

v3.25.3
Consolidated Balance Sheets - USD ($)
$ in Thousands
Aug. 31, 2025
May 31, 2025
Aug. 31, 2024
May 31, 2024
May 31, 2023
Current assets:          
Cash and cash equivalents $ 9,332 $ 11,903   $ 3,110  
Restricted cash   0   6,704  
Prepaid expenses 560 252   463  
Prepaid service fees 3,458 3,723   538  
Other receivables   2,000      
Total current assets 13,350 17,878   10,815  
Other non-current assets 133 169   321  
Total assets 13,483 18,047   11,136  
Current liabilities:          
Accounts payable 14,175 14,692   29,561  
Accrued liabilities and compensation 2,823 2,206   2,810  
Accrued interest on convertible notes 16,577 18,151   15,227  
Accrued dividends on convertible preferred stock 8,642 8,269   6,791  
Convertible notes payable, net 27,200 27,200   29,793  
Derivative liability - equity instruments         $ 79
Total current liabilities 69,417 70,518   84,182  
Other liabilities (Note 9) 43,571 43,571   43,571  
Total liabilities 112,988 114,089   127,894  
Commitments and Contingencies (Note 9)    
Stockholders' deficit:          
Preferred stock      
Common stock, $0.001 par value; 1,750,000 shares authorized; 1,257,045 and 1,249,460 issued, and 1,256,759 and 1,249,174 outstanding at August 31, 2025 and May 31, 2025, respectively 1,257 1,249   1,059  
Treasury stock, $0.001 par value; 286 shares at August 31, 2025 and May 31, 2025    
Additional paid-in capital 792,564 790,495   773,714  
Accumulated deficit (893,326) (887,786)   (891,531)  
Total stockholders' deficit (99,505) (96,042) $ (85,210) (116,758) $ (109,501)
Total liabilities and stockholders' deficit 13,483 18,047   11,136  
Series B Convertible Preferred Stock          
Stockholders' deficit:          
Preferred stock    
Series C Convertible Preferred Stock          
Current liabilities:          
Accrued dividends on convertible preferred stock 3,929 3,769   3,135  
Stockholders' deficit:          
Preferred stock    
Series D Convertible Preferred Stock          
Current liabilities:          
Accrued dividends on convertible preferred stock 4,713 4,500   3,656  
Stockholders' deficit:          
Preferred stock