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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash flow from operating activities:    
Net loss $ (3,370,715) $ (3,888,713)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 323,602 321,980
Vesting expense 36,518 565,082
Common stock issued for consulting and other 162,122 (4,048)
Amortization of debt discount 0 244,830
Gain on valuation of equity-linked instruments and derivative liability (1,908) (95,671)
Loss on fixed asset disposal 1,200 0
Changes in assets and liabilities:    
Accounts receivable 89,230 (8,050)
Inventories (67,996) (3,289)
Prepaid expense and other assets 197,123 (55,431)
Accounts payable 85,037 (345,070)
Accrued expenses and other liabilities (581,267) (82,271)
Deferred revenue (4,325) 101,167
Other long-term liabilities 37,683 (72,607)
Net cash used in operating activities: (3,093,696) (3,322,091)
Cash flow from investing activities:    
Purchase of fixed assets (45,399) (391,685)
Acquisition of intangibles (34,844) (1,436)
Net cash used in investing activities (80,243) (393,121)
Cash flow from financing activities:    
Proceeds from issuance of common stock and warrants, net 0 31,077,231
Proceeds from exercise of warrants into common stock 0 4,495,270
Repayment of debt 0 (4,162,744)
Payment premium 0 (1,073,470)
Proceeds from issuance of common stock pursuant to equity line 86,885 0
Net cash provided by financing activities 86,885 30,336,287
Net increase (decrease) in cash and cash equivalents (3,087,054) 26,621,075
Cash and cash equivalents at beginning of period 28,202,615 678,332
Cash and cash equivalents at end of period 25,115,561 27,299,407
Non-cash transactions:    
Shares issued to CEO per agreement related to accrued interest 0 143,573
Shares issued pursuant to convertible debt $ 0 $ 514,011