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v3.25.1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Cash flows from operating activities |  |
Net loss attributable to common stockholders | $ (1,478,358) | $ (6,088,711)
Adjustments to reconcile net loss attributable to common shareholders to net cash used in operating activities: |  |
Amortization of debt discount | 190,365 |
Depreciation and amortization | 368,503 | 397,286
Amortization of right-of-use asset | 36,245 | 45,927
Bad debt expense | 1,890 | 29,240
Impairment of patents |  | 64,296
Foreign currency transaction (gains) losses | (3,013,984) | 1,425,690
Debt costs |  | 10,713
Stock-based compensation | 818,426 | 959,465
Changes in operating assets and liabilities |  |
Grants and accounts receivable | (79,889) | (848,330)
Inventories | (198,802) | (429,869)
Prepaid expenses and other current assets | 257,931 | 886,258
Accounts payable and accrued expenses | (367,282) | (1,281,724)
Net cash used in operating activities | (3,464,955) | (4,829,759)
Cash flows from investing activities |  |
Purchases of property and equipment | (2,121) | (45,191)
Patent costs | (45,121) | (81,827)
Net cash used in investing activities | (47,242) | (127,018)
Cash flows from financing activities |  |
Repayment of long-term debt |  | (625,000)
Proceeds from exercise of common stock warrants | 1,439,828 | 53,238
Proceeds from rights offering, net of fees incurred | 5,392,306 |
Net cash provided by (used in) financing activities | 6,832,134 | (571,762)
Effect of exchange rates on cash | 25,912 | 5,782
Net change in cash, cash equivalents, and restricted cash | 3,345,849 | (5,522,757)
Cash, cash equivalents, and restricted cash at beginning of year | 9,763,884 | 15,615,095
Cash, cash equivalents, and restricted cash - end of period | 13,109,733 | 10,092,338
Supplemental disclosure of cash flow information |  |
Cash paid for interest | 506,250 | 199,418
Supplemental disclosure of non-cash financing activities |  |
Warrants issued in connection with long-term debt | 555,988 |
Offering fees included in accounts payable | 252,783 |
Settlement of accrued bonuses with restricted stock units | $ 2,025 | $ 2,024

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