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v3.23.3

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 24, 2022
Cash flows from operating activities: |  |
Net loss | $ (13,259,247) | $ (13,169,027)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 498,188 | 665,217
Accretion of premium or discount on marketable debt securities |  | 128
Stock-based compensation | 2,343,782 | 1,370,654
Foreign currency losses | 27,478 | 339,186
Change in allowance for credit losses | 726,413 | 4,772
Write-off of excess inventory | 292,405 | 1,670,993
Investment impairment (unrealized gains on investments) | 2,887,893 | (2,700,000)
Loss on sale of property and plant | 18,878 | 202,670
Income taxes | 117,316 | 107,509
Changes in other non-cash items | 194,890 | 1,451,478
Changes in assets and liabilities: |  |
Accounts receivable | (2,137,460) | 3,756,182
Contract assets and unbilled receivables | (1,651,437) | (2,302,972)
Inventory | (2,944,672) | (1,944,577)
Prepaid expenses, other current assets and other assets | (461,365) | (272,446)
Accounts payable and accrued expenses | 1,799,444 | (1,651,538)
Contract liabilities and billings in excess of revenue earned | (244,188) | (3,130,965)
Net cash used in operating activities | (11,791,682) | (15,602,736)
Cash flows from investing activities: |  |
Other assets | 14,656 | 23,802
Capital expenditures | (478,282) | (642,146)
Equity investment purchase |  | (499,998)
Proceeds from sale of marketable debt securities | 10,374,593 | 1,000,000
Purchases of marketable debt securities | (17,624,779) | (4,000,042)
Net cash used in investing activities | (7,713,812) | (4,118,384)
Cash flows from financing activities: |  |
Sale of treasury stock, net of costs |  | 461,723
Issuance of common stock and pre-funded warrants, net of costs | 21,335,000 | 2,397,618
Settlements of restricted stock for tax withholding obligations |  | (95,613)
Net cash provided by financing activities | 21,335,000 | 2,763,728
Effect of exchange rate changes on cash | 11,291 | (205,125)
Net increase (decrease) in cash, cash equivalents, and restricted cash | 1,840,797 | (17,162,517)
Cash, cash equivalents and restricted cash: |  |
Beginning of period | 8,258,878 | 26,787,931
End of period | $ 10,099,675 | $ 9,625,414

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