| Dec'19 | Dec'18 | Dec'17 | ||||
|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||
Net loss | ||||||
-12,038 | -67,357 | -25,652 | ||||
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||
Depreciation and amortization | ||||||
58 | 42 | 59 | ||||
Stock-based compensation | ||||||
105 | 2,834 | 0 | ||||
Amortization of intangible asset | ||||||
33 | 33 | 5 | ||||
Amortization of debt discounts | ||||||
0 | 27,184 | 11,159 | ||||
Loss on disposal of property and equipment | ||||||
-2 | 0 | - | ||||
Change in fair value of warrant liability | ||||||
-204 | 8,051 | -4,309 | ||||
Change in fair value of derivative liability | ||||||
-171 | -14,294 | -9,040 | ||||
Gain on extinguishment of convertible notes payable | ||||||
- | - | 621 | ||||
Expense for issuance of warrants and common stock for services | ||||||
310 | 241 | 0 | ||||
Issuance of common stock for warrant settlement | ||||||
112 | 0 | - | ||||
Change in fair value of common stock warrants upon repricing | ||||||
892 | 0 | - | ||||
Changes in operating assets and liabilities: | ||||||
Accounts receivable | ||||||
-4 | 57 | 47 | ||||
Inventories | ||||||
1,283 | 691 | 384 | ||||
Prepaid expenses and other assets | ||||||
516 | 221 | 101 | ||||
Accounts payable | ||||||
1,022 | -752 | 295 | ||||
Accrued liabilities | ||||||
300 | 131 | -1,376 | ||||
Accrued interest | ||||||
0 | 6,316 | 1,545 | ||||
Net cash used in operating activities | ||||||
-11,032 | -9,952 | -10,388 | ||||
Cash flows from investing activities: | ||||||
Proceeds from sale of property and equipment | ||||||
1 | 0 | - | ||||
Acquisition of intangible asset | ||||||
- | - | 100 | ||||
Purchases of property and equipment | ||||||
- | - | 66 | ||||
Net cash used in investing activities | ||||||
-34 | -87 | -166 | ||||
Cash flows from financing activities: | ||||||
Proceeds from issuance of common stock, net of issuance costs | ||||||
6,149 | 10,273 | 0 | ||||
Proceeds from the issuance of convertible preferred stock and common stock warrant, net of issuance costs | ||||||
920 | 0 | - | ||||
Proceeds from issuance of pre-funded warrants and exercise of common stock warrants | ||||||
1,167 | 0 | - | ||||
Proceeds from issuance of promissory notes, net of issuance costs | ||||||
0 | 2,002 | 0 | ||||
Proceeds from issuance of convertible notes payable, net of issuance costs | ||||||
0 | 1,435 | 15,808 | ||||
Repayment of convertible notes payable | ||||||
0 | 200 | 5,067 | ||||
Taxes paid related to net share settlements of equity awards | ||||||
87 | 499 | 0 | ||||
Repurchase of common stock | ||||||
- | - | 25 | ||||
Net cash provided by financing activities | ||||||
8,149 | 13,011 | 10,715 | ||||
Effect of exchange rate changes on cash and cash equivalents | ||||||
-3 | -3 | -4 | ||||
Net decrease in cash and cash equivalents | ||||||
-2,920 | 2,969 | - | ||||
Net decrease in cash and cash equivalents | ||||||
- | - | 156 | ||||
Supplemental disclosure of cash flow information: | ||||||
Cash paid for income taxes | ||||||
8 | 8 | 2 | ||||
Noncash Investing and Financing Activities: | ||||||
Issuance of warrants in connection with convertible notes payable | ||||||
0 | 2,048 | 4,279 | ||||
Issuance of warrant in connection with settlement agreement with Series E holders | ||||||
0 | 1,590 | 0 | ||||
Issuance of common stock warrants in connection with convertible preferred stock offering | ||||||
243 | 0 | - | ||||
Issuance of warrants in connection in public offering | ||||||
97 | 169 | - | ||||
Issuance of warrants in connection in initial public offering | ||||||
- | - | 0 | ||||
Beneficial conversion feature of convertible notes payable | ||||||
0 | 1,918 | 3,581 | ||||
Fair value of derivative liability in connection with issuance of preferred stock | ||||||
216 | 0 | - | ||||
Convertible preferred stock dividend | ||||||
56 | 0 | - | ||||
Issuance of convertible notes payable upon amendment of promissory notes | ||||||
- | - | 150 | ||||
Issuance of convertible notes in lieu of employee expense payments | ||||||
0 | 50 | 0 | ||||
Reduction of convertible notes payable by shipment of inventories | ||||||
- | - | 277 | ||||
Conversion of accrued interest to accounts payable | ||||||
0 | 2 | 14 | ||||
Conversion of interest to convertible notes payable as principal | ||||||
0 | 10 | 27 | ||||
Issuance of convertible notes payable in lieu of vendor expense payment | ||||||
- | - | 12 | ||||
Reclassification of promissory notes to convertible notes payable | ||||||
0 | 2,250 | 0 | ||||
Fair value of derivative liability in connection with issuance of notes payable | ||||||
0 | 7,886 | 13,058 | ||||
Conversion of preferred units to common stock upon initial public offering | ||||||
0 | 64,735 | 0 | ||||
Conversion of convertible notes and accrued interest to common stock upon initial public offering | ||||||
0 | 30,450 | 0 | ||||
Reclassification of derivative liability to equity upon initial public offering | ||||||
0 | 43,012 | 0 | ||||
Reclassification of warrant liability to equity upon initial public offering | ||||||
0 | 9,310 | - | ||||
Reclassification of warrant from liability to equity | ||||||
- | - | 0 | ||||
Issuance of warrants in connection in public offering | ||||||
97 | 169 | - | ||||