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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Cash Flows From Operating Activities    
Net loss $ (2,335,194) $ (1,828,465)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock based compensation 426,283 482,964
Depreciation and amortization 425,281 218,276
Change of right-of-use asset 119,428 118,206
Net change in fair value of marketable securities 15,548 (8,034)
Change in inventory reserve 113,252 0
Changes in operating assets and liabilities:    
Accounts receivable (10,712) (611,163)
Inventories 881,527 (788,455)
Prepaid expenses and other current assets 45,954 263,842
Accounts payable (904,756) 650,441
Accrued liabilities (377,715) (611,553)
Operating lease liabilities (126,069) (119,209)
Contract liabilities (22,747) 500
Net cash used in operating activities (1,749,920) (2,232,650)
Cash Flows From Investing Activities    
Security deposit 2,709 0
Realized gain on sale of marketable securities, available for sale (35,210) 0
Net sales of investment in trading marketable securities 3,500,000 501,001
Purchase of property and equipment (1,991,051) (744,008)
Net cash provided by (used in) investing activities 1,476,448 (243,007)
Cash Flows From Financing Activities    
Finance lease payments (83,735) (2,835)
Net cash used in financing activities (83,735) (2,835)
Net change in cash, cash equivalents and restricted cash (357,207) (2,478,492)
Cash, cash equivalents and restricted cash at beginning of the year 16,755,233 23,501,007
Cash, cash equivalents and restricted cash at end of the period 16,398,027 21,022,515
Supplemental Cash Flow Information    
Cash paid for income taxes 0 0
Cash paid for interest 51,978 59,895
Non Cash Investing and Financing Activities    
Increase in the right-of-use asset and lease liability 31,572 92,405
Reconciliation to the Consolidated Balance Sheet    
Cash and cash equivalents 16,137,920 21,022,515
Restricted cash 260,107 0
Total cash, cash equivalents and restricted cash $ 16,398,027 $ 21,022,515

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