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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows from operating activities:    
Net loss $ (55,475,786) $ (48,016,713)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 4,019,532 1,386,621
Deferred revenue 2,240,250 (604,918)
Stock-based compensation 6,266,416 6,801,485
Change in inventory and prepaid purchases reserve 1,611,847 54,369
Non-cash lease expense 216,263 425,421
Change in fair value and gain on conversion of 2026 Notes and exchange of 2023 Warrants (2,937,925) 0
Change in fair value of 2024 Notes and 2024 Warrants 10,977,994 0
Other non-cash items 1,661,995 200,000
Effects of changes in operating assets and liabilities:    
Accounts receivable 3,709,705 (851,649)
Inventory, net (2,605,061) (25,909,707)
Prepaid expenses and other current assets 1,096,813 4,783,655
Accounts payable, accrued liabilities and other 414,822 (3,783,596)
Warranty liability (1,260,321) (285,094)
Net cash used in operating activities (30,063,456) (65,800,126)
Cash flows from investing activities:    
Capital expenditures (3,759,353) (10,472,730)
Net cash used in investing activities (3,759,353) (10,472,730)
Cash flows from financing activities:    
Proceeds on convertible notes 19,500,000 0
Payments on convertible notes (20,000,000) 0
Proceeds from issuance of common stock 4,366,649 40,291,607
Payments on finance lease (412,530) (439,722)
Exercise of options and restricted share award activity (168,614) (475,590)
Net cash provided by financing activities 3,285,505 39,376,295
Change in cash and cash equivalents (30,537,304) (36,896,561)
Cash and cash equivalents, beginning of the period 35,845,915 99,276,301
Cash and cash equivalents, end of the period $ 5,308,611 $ 62,379,740