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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Cash flows from operating activities:    
Net loss $ (9,068,000) $ (8,097,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 46,000 43,000
Stock-based compensation 809,000 10,000
Amortization of intangible asset 25,000 25,000
Amortization of debt discounts 1,389,000 0
Expense related to common stock issued in settlements 135,000 0
Change in fair value of warrant liability (24,000) (193,000)
Change in fair value of derivative liability 0 171,000
Gain on foreign currency translation from closure of subsidiary 48,000 296,000
Change in fair value of common stock warrants upon repricing 0 46,000
Changes in operating assets and liabilities:    
Accounts receivable (138,000) 28,000
Inventories 90,000 (653,000)
Prepaid expenses and other assets 66,000 (481,000)
Accounts payable (643,000) 164,000
Accrued liabilities (234,000) 187,000
Accrued interest 0 0
Net cash used in operating activities (7,499,000) (8,454,000)
Cash flows from investing activities:    
Proceeds from sale of property and equipment 0 0
Purchases of property and equipment (15,000) (31,000)
Sale of property and equipment 0 0
Net cash used in investing activities (15,000) (31,000)
Cash flows from financing activities:    
Proceeds from issuance of common stock, prefunded warrants and warrants, net of issuance costs 6,240,000 4,664,000
Proceeds from issuance of common stock, net of shelf offering costs 9,951,000 0
Proceeds from the issuance of preferred stock and common stock warrants, net of issuance costs 0 920,000
Proceeds from the exercise of prefunded warrants and common stock warrants, net of issuance costs 37,000 67,000
Proceeds from issuance of promissory notes 847,000 0
Proceeds from issuance of convertible notes payable, net of issuance costs 1,396,000 0
Repayment of convertible notes payable (2,151,000) 0
Taxes paid related to net share settlements of equity awards 0 (87,000)
Net cash provided by financing activities 16,320,000 5,564,000
Effect of exchange rate changes on cash and cash equivalents 0 (13,000)
Net increase (decrease) in cash and cash equivalents 8,806,000 (2,934,000)
Cash and cash equivalents as of beginning of period 298,000 3,218,000
Cash and cash equivalents as of end of period 9,104,000 284,000
Supplemental disclosure of cash flow information:    
Cash paid for interest 352,000 0
Cash paid for income taxes 3,000 7,000
Noncash Investing and Financing Activities:    
Issuance of warrants in connection with convertible notes payable 630,000 0
Issuance of common stock in connection with convertible notes payable 4,000 0
Issuance of warrants in connection with common stock offerings 8,354,000 0
Issuance of common stock warrants in connection with preferred stock offering 0 243,000
Issuance of warrants in connection with public offering 0 70,000
Fair value of derivative liability in connection with issuance of convertible preferred stock 0 216,000
Deemed dividend from warrant repricing (134,000) 0
Warrant repricing 134,000 0
Convertible preferred stock dividend 60,000 36,000
Issuance costs for shelf offering of common stock in accounts payable 35,000 0
Property and equipment purchased through capital lease $ 72,000 $ 0

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