v3.25.1
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Net loss $ (7,707,000) $ (5,151,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Share-based compensation 867,000 488,000
Amortization of discounts on marketable securities (261,000) (329,000)
Non-cash lease expense 20,000 18,000
Depreciation 11,000 8,000
Changes in operating assets and liabilities:    
Amounts receivable (17,000) (30,000)
Prepaid expenses and other assets (422,000) (158,000)
Deposits 1,108,000 (1,308,000)
Accounts payable 567,000 (210,000)
Accrued liabilities and operating lease liabilities (1,315,000) 19,000
Net cash used in operating activities (7,149,000) (6,653,000)
us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract    
Purchase of marketable securities (6,866,000) (9,783,000)
Maturities of marketable securities 13,500,000 14,000,000
Purchase of property and equipment (12,000) (9,000)
Net cash provided by investing activities 6,622,000 4,208,000
Cash flows from financing activities:    
Proceeds from the exercise of stock options 94,000 0
Principal payments on finance lease obligations (3,000) (1,000)
Net cash provided by (used in) financing activities 91,000 (1,000)
Net decrease in cash and cash equivalents (436,000) (2,446,000)
Cash and cash equivalents at beginning of period 3,025,000 4,543,000
Cash and cash equivalents at end of period 2,589,000 2,097,000
Supplemental disclosure of cash flow information:    
Cash paid for income taxes $ 6,000 $ 7,000