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

Consolidated Balance Sheets

v3.26.1
Consolidated Balance Sheets - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Current assets    
Cash and cash equivalents $ 10,810,000 $ 4,079,000
Inventory 244,000 251,000
Prepaid expenses and other current assets 282,000 214,000
Total current assets 13,405,000 4,644,000
Non-current assets    
Property, plant and equipment, net 5,763,000 16,473,000
Intellectual property, net 76,000 146,000
Other assets 462,000 5,102,000
Total non-current assets 6,301,000 21,721,000
Total assets 19,706,000 26,365,000
Liabilities, Current [Abstract]    
Accounts payable 547,000 1,227,000
Accrued Expenses 3,570,000 3,130,000
Operating and Finance Lease Liability, Current 311,000 289,000
Notes payable, current portion 0 3,536,000
Total current liabilities 4,428,000 8,182,000
Operating and Finance Lease, Liability, Noncurrent 281,000 446,000
Total liabilities 4,936,000 10,121,000
Commitments and contingencies (see Note 14)
Stockholders’ equity    
Common stock; $0.001 par value; 300,000,000 shares authorized; 3,004,898 and 2,999,592, shares issued and outstanding as of December 31, 2025, respectively and 776,026 and 773,084 shares issued and outstanding as of December 31, 2024 3,000 1,000
Additional paid-in capital 285,212,000 264,205,000
Accumulated deficit (270,416,000) (247,770,000)
Treasury stock, at cost; common shares: 5,306 and 2,942 as of December 31, 2025 and December 31, 2024, respectively (29,000) (192,000)
Total stockholders’ equity 14,770,000 16,244,000
Total liabilities and stockholders’ equity 19,706,000 26,365,000
Warrant Liability [Member]    
Liabilities, Current [Abstract]    
Warrant liability 227,000 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
LINICO Note [Member]    
Current assets    
Note receivable 0 100,000
Lion Energy Note [Member]    
Current assets    
Note receivable $ 2,069,000 $ 0