Quarterly report [Sections 13 or 15(d)]

Condensed Consolidated Balance Sheets (Current Period Unaudited)

v3.25.3
Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
Sep. 30, 2025
Dec. 31, 2024
Current assets    
Cash and cash equivalents $ 3,586,000 $ 4,079,000
Note receivable - LINICO 0 100,000
Inventory 244,000 251,000
Prepaid expenses and other current assets 137,000 214,000
Total current assets 3,967,000 4,644,000
Non-current assets    
Total property and equipment, net 5,911,000 16,473,000
Intellectual property, net 93,000 146,000
Other assets 533,000 5,102,000
Total non-current assets 6,537,000 21,721,000
Total assets 10,504,000 26,365,000
Liabilities, Current [Abstract]    
Accounts payable 718,000 1,227,000
Accrued Expenses 2,506,000 3,130,000
Operating and Finance Lease Liability, Current 235,000 289,000
Notes payable, current portion 0 3,536,000
Total current liabilities 3,459,000 8,182,000
Liabilities, Noncurrent [Abstract]    
Operating and Finance Lease, Liability, Noncurrent 285,000 446,000
Total liabilities 3,982,000 10,121,000
Commitments and contingencies (see Note 13)
Stockholders’ equity    
Common stock; $0.001 par value; 300,000,000 shares authorized; 1,856,815 and 1,848,968, shares issued and outstanding as of September 30, 2025, respectively and 776,026 and 773,084 shares issued and outstanding as of December 31, 2024, respectively 2,000 1,000
Additional paid-in capital 272,527,000 264,205,000
Accumulated deficit (265,976,000) (247,770,000)
Treasury stock, at cost; common shares: 7,847 and 2,942 as of September 30, 2025 and December 31, 2024, respectively (31,000) (192,000)
Total stockholders’ equity 6,522,000 16,244,000
Total liabilities and stockholders’ equity 10,504,000 26,365,000
Warrant Liability [Member]    
Liabilities, Noncurrent [Abstract]    
Warrant liability 238,000 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