Quarterly report [Sections 13 or 15(d)]

Condensed Consolidated Balance Sheets (Current Period Unaudited)

v3.25.2
Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Current assets    
Cash and cash equivalents $ 1,933,000 $ 4,079,000
Note receivable - LINICO 0 100,000
Inventory 245,000 251,000
Prepaid expenses and other current assets 191,000 214,000
Total current assets 2,369,000 4,644,000
Non-current assets    
Total property and equipment, net 4,984,000 16,473,000
Intellectual property, net 110,000 146,000
Other assets 1,781,000 5,102,000
Total non-current assets 6,875,000 21,721,000
Total assets 9,244,000 26,365,000
Liabilities, Current [Abstract]    
Accounts payable 905,000 1,227,000
Accrued Expenses 2,462,000 3,130,000
Operating and Finance Lease Liability, Current 266,000 289,000
Notes payable, current portion 0 3,536,000
Total current liabilities 3,633,000 8,182,000
Liabilities, Noncurrent [Abstract]    
Operating and Finance Lease, Liability, Noncurrent 327,000 446,000
Total liabilities 4,126,000 10,121,000
Commitments and contingencies (see Note 13)
Stockholders’ equity    
Common stock; $0.001 par value; 300,000,000 shares authorized; 1,030,349 and 1,027,701, shares issued and outstanding as of June 30, 2025, respectively and 776,026 and 773,084 shares issued and outstanding as of December 31, 2024, respectively 1,000 1,000
Additional paid-in capital 268,039,000 264,205,000
Accumulated deficit (262,855,000) (247,770,000)
Treasury stock, at cost; common shares: 2,648 and 2,942 as of June 30, 2025 and December 31, 2024, respectively (67,000) (192,000)
Total stockholders’ equity 5,118,000 16,244,000
Total liabilities and stockholders’ equity 9,244,000 26,365,000
Warrant Liability [Member]    
Liabilities, Noncurrent [Abstract]    
Warrant liability 166,000 1,493,000
Related Party [Member]    
Liabilities, Current [Abstract]    
Notes payable, current portion 0 306,000
Nonrelated Party [Member]    
Liabilities, Current [Abstract]    
Notes payable, current portion $ 0 $ 3,230,000