v3.22.2.2
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Cash flows from operating activities:    
Net loss $ (5,986,703) $ (5,640,932)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 44,649 37,606
Amortization of debt discount and issuance costs 56,182 0
Non-cash lease expense 60,929 60,957
Loss on abandonment of patent applications 62,388 0
Stock compensation expense 225,404 263,478
Gain on extinguishment of debt 0 (366,000)
Value of stock issued to 401(k) plan for employer matching contributions 44,720 76,846
Value of stock issued in payment of employee bonuses 16,965 0
Value of stock issued in payment of director fees 12,975 0
Changes in operating assets and liabilities:    
Receivables 62,924 (130,218)
Inventory (164,515) (9,032)
Prepaid expenses and other assets 411,284 350,477
Accounts payable 1,005,335 (81,647)
Accrued and other liabilities (418,347) 71,825
Lease liabilities (175,535) (156,634)
Deferred revenue 45,929 45,928
Net cash used in operating activities (4,695,415) (5,477,346)
Cash flows from investing activities:    
Payments for purchases of equipment (48,657) (2,707)
Patent and trademark costs (190,727) (104,067)
Net cash used in investing activities (239,384) (106,774)
Cash flows from financing activities:    
Proceeds from issuance of preferred stock, including stock subscriptions receivable 0 10,475,000
Proceeds from issuance of common stock 0 2,133
Proceeds from note payable 1,500,000 0
Payment of debt issuance costs (14,627) 0
Principal payments on notes payable (453,427) (379,443)
Net cash provided by financing activities 1,031,946 10,027,728
Net (decrease) increase in cash and cash equivalents (3,902,853) 4,443,608
Cash and cash equivalents, beginning of period 4,230,865 2,670,495
Cash and cash equivalents, end of period 328,012 7,114,103
Preferred Stock Issuance Costs [Member]    
Cash flows from financing activities:    
Payment of stock issuance costs $ 0 $ (69,962)

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