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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Operating activities:    
Net loss $ (2,324) $ (1,454)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation 7 14
Amortization of right of use lease asset 7 20
Realized and unrealized gain on marketable equity securities (58) (586)
Loss on derivative instruments 0 336
Stock-based compensation expense 167 251
Changes in operating assets and liabilities:    
Prepaid expenses and other current assets (82) (163)
Accounts payable and other current liabilities 435 181
Net cash used in operating activities (1,848) (1,401)
Investing activities:    
Purchase of short-term investments, net (927) (4,300)
Cash from the sale of marketable equity securities 270 1,507
Cash paid for settlement of derivative instruments   (403)
Net cash used by investing activities (657) (3,196)
Financing activities:    
Issuance of common stock ATM - net of issuing costs 2,647 94
Issuance of common stock Private Placement - net of issuing costs 228 4,411
Issuance of common stock upon exercise of stock options 61 206
Net cash provided by financing activities 2,936 4,711
Net increase in cash, cash equivalents and restricted cash 431 114
Cash, cash equivalents and restricted cash, beginning of period 312 311
Cash, cash equivalents and restricted cash, end of period $ 743 $ 425