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Consolidated Balance Sheets - USD ($)
Jun. 30, 2021
Jun. 30, 2020
Current assets    
Cash and cash equivalents $ 35,936,000 $ 3,349,000
Short-term investments 27,351,000 0
Accounts receivable 5,000 101,000
Inventory, net:    
Raw materials 1,056,000 416,000
Work-in-process 147,000 38,000
Finished goods 297,000 222,000
Income tax receivable   429,000
Prepaid expenses and other current assets 318,000 117,000
Total current assets 65,110,000 4,672,000
Property and equipment, net 263,000 99,000
Assets held for disposal, net   237,000
Operating leases, right-of-use asset, net 249,000 851,000
Other assets, net 11,000 71,000
Total assets 65,633,000 5,930,000
Current liabilities    
Accounts payable 396,000 239,000
Payroll related accruals 344,000 433,000
Accrued expenses and other liabilities 888,000 627,000
Income tax payable 2,000 2,000
Term note payable - related party 2,500,000 2,500,000
Term note payable   210,000
Lease liabilities, current 81,000 339,000
Total current liabilities 4,211,000 4,350,000
Term note payable, net of current portion   332,000
Lease liabilities, non-current 215,000 623,000
Total liabilities 4,426,000 5,305,000
Commitments and contingencies (Note 14)
Stockholders’ equity    
Common stock, $0.001 par value, 50,000,000 shares authorized at June 30, 2021 and 2020; 49,450,558 and 8,250,286 shares issued at June 30, 2021 and 2020, respectively; 49,450,558 and 7,850,362 shares outstanding at June 30, 2021 and 2020, respectively 190,641,000 190,599,000
Treasury stock, no shares and 399,916 shares at cost at June 30, 2021 and 2020, respectively   (4,129,000)
Additional paid-in capital 77,971,000 13,934,000
Accumulated deficit (207,382,000) (199,779,000)
Accumulated other comprehensive loss (23,000)  
Total stockholders’ equity 61,207,000 625,000
Total liabilities and stockholders’ equity 65,633,000 5,930,000
Convertible Preferred Stock    
Stockholders’ equity    
Convertible preferred stock, $0.001 par value, 2,500,000 shares authorized; 280,898 shares of Series D issued and outstanding at June 30, 2021 and 2020, respectively