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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Cash flows from operating activities    
Net loss $ (5,736,603) $ (6,803,716)
Adjustments to reconcile net loss to net cash used in operating activities    
Depreciation and amortization 350,452 514,269
Non-cash interest expense 456,679 1,091,843
Stock compensation expense 211,122 241,619
Change in inventory reserve 256,814
Change in fair value of derivative liabilities (12,694) (109,744)
Changes in operating assets and liabilities    
Accounts receivable (142,177) 889,810
Inventory (195,029) (170,028)
Other assets 3,498 110,332
Accounts payable (157,139) (423,955)
Accrued compensation and other liabilities 100,388 (381,830)
Deferred revenue (97,929)  
Net cash used in operating activities (4,962,618) (5,041,400)
Cash flows from investing activities    
Purchases of property and equipment (330,446) (38,713)
Net cash used in investing activities (330,446) (38,713)
Cash flows from financing activities    
Proceeds from issuance of common stock and pre-funded warrants, net of issuance costs 6,974,050  
Payments on debt (2,229,560)  
Payments on finance lease obligations (841) (17,529)
Net cash provided by (used in) financing activities 4,743,649 (17,529)
Effects of exchange rates on cash 150,186 (413,093)
Net decrease in cash and cash equivalents and restricted cash (399,229) (5,510,735)
Cash and cash equivalents and restricted cash at beginning of period 7,935,659 36,632,186
Cash and cash equivalents and restricted cash at end of period 7,536,430 31,121,451
Supplemental disclosure of cash flow information    
Cash paid for interest 56,320 1,120
Supplemental disclosures of noncash investing and financing activities    
Right-of-use assets acquired through operating leases $ 801,321