v3.24.1.u1
Condensed Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES    
Net Loss $ (4,822) $ (5,019)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 17 20
Operating lease right of use asset amortization 58 52
Financing lease right of use asset amortization 281 291
Stock-based compensation 1,024 927
Net accretion of discounts on available-for-sale securities (46) (3)
Changes in operating assets and liabilities:    
Unbilled contracts receivable 550 0
Interest receivable 12 (46)
Prepaid and other current assets (84) 168
Accounts payable (114) 26
Accrued expenses (12) 69
Accrued payroll expenses (928) (675)
Operating lease liability (102) (44)
Deferred revenue 17 0
Net cash used in operating activities (4,149) (4,234)
CASH FLOWS FROM INVESTING ACTIVITIES    
Acquisition of property and equipment 0 (15)
Purchase of available-for-sale securities (1,479) (4,942)
Maturity of available-for-sale securities 4,000 0
Net cash provided by/(used in) investing activities 2,521 (4,957)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from at-the-market sale of stock, net of commissions and expenses 3,950 274
Proceeds from exercise of stock options 86 39
Payments on principal of financing lease (193) (188)
Net cash provided by financing activities 3,843 125
Net increase/(decrease) in cash and cash equivalents 2,215 (9,066)
Cash and cash equivalents at beginning of period 12,591 21,184
Cash and cash equivalents at end of period 14,806 12,118
Supplemental information:    
Cash paid for interest 26 53
Cash paid for taxes $ 0 $ 0