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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Cash flows from operating activities    
Net loss $ (15,626,883) $ (26,748,113)
Adjustments to reconcile net loss to net cash used in operating activities    
Depreciation and amortization 1,070,581 1,307,590
Noncash interest expense 1,261,495 1,973,437
Loss on disposal of equipment 15,988
Stock compensation expense 138,168 727,389
Change in inventory reserve 535,755 1,447,626
Cash bonus taken in the form of stock compensation 283,554
Change in fair value of derivative liabilities (65,800) (54,623)
Goodwill impairment charge 6,975,520
Changes in operating assets and liabilities    
Accounts receivable 91,522 386,704
Inventory 290,366 (600,186)
Other assets 86,516 (326,820)
Accounts payable 399,197 (519,625)
Accrued compensation and other liabilities (1,161,958) (1,250,476)
Deferred revenue 54,388 210,735
Net cash used in operating activities (12,643,099) (16,454,854)
Cash flows from investing activities    
Purchases of property and equipment (799,498) (186,556)
Net cash used in investing activities (799,498) (186,556)
Cash flows from financing activities    
Proceeds from issuance of common stock and pre-funded warrants, net of issuance costs 10,188,158
Proceeds from at the market offering, net of issuance costs 989,704
Payments on debt (3,910,010) (8,697,587)
Payments on finance lease obligations (2,523) (38,925)
Net cash provided by (used in) financing activities 6,275,625 (7,746,808)
Effects of exchange rates on cash 15,977 (1,548,819)
Net decrease in cash and cash equivalents and restricted cash (7,150,995) (25,937,037)
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 784,664 10,695,149
Supplemental disclosure of cash flow information    
Cash paid for interest 1,422,343 976,324
Supplemental disclosures of noncash investing and financing activities    
Right-of-use assets acquired through operating leases 801,321
Property and equipment transferred to inventory 152,243
Purchased equipment not yet paid for $ 94,784