v3.25.1
CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash flows from operating activities:    
Net loss $ (3,366,000) $ (6,599,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 45,000 48,000
Stock-based compensation 111,000 404,000
Accrued interest 14,000  
Amortization of short-term loan fees 17,000  
Change in fair value of warrant liability (267,000) 82,000
Changes in operating assets and liabilities:    
Accounts receivable (234,000) 75,000
Inventory (146,000) (193,000)
Prepaid expenses and other current assets 139,000 223,000
Operating lease right-of-use ("ROU") assets 288,000 160,000
Accounts payable (576,000) (347,000)
Accrued expenses (545,000) (84,000)
Accrued severance expense 73,000 1,335,000
Operating lease liabilities (219,000) (160,000)
Deferred revenue (2,000) (17,000)
Net cash used in operating activities (4,668,000) (5,073,000)
Cash flows from investing activities:    
Purchases of property and equipment (21,000) (1,000)
Net cash used in investing activities (21,000) (1,000)
Cash flows from financing activities:    
Repayments of short-term loan (328,000)  
Payments from financed insurance premiums (54,000)  
Net proceeds from an ATM offering 13,803,000 47,000
Net proceeds from a sale of common stock and warrant issuance   1,770,000
Proceeds from contributions to the ESPP   36,000
Net cash provided by financing activities 13,421,000 1,853,000
Net increase (decrease) in cash, cash equivalents and restricted cash 8,732,000 (3,221,000)
Cash, cash equivalents and restricted cash - beginning 1,353,000 13,936,000
Cash, cash equivalents and restricted cash - ending 10,085,000 10,715,000
Supplemental disclosure of cash flow information:    
Interest paid 184,000  
Supplemental disclosure of non-cash investing and financing activities:    
Decrease in operating lease ROU assets and operating lease liabilities from lease amendment   $ 51,000
Increase in operating lease ROU assets and operating lease liabilities from lease modification 896,000  
Increase in ROU assets from shares issued to landlord 25,000  
Accrued interest included in short-term loan payable $ 70,000