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STATEMENTS OF CASH FLOWS - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Cash flows from operating activities |  |  |
Net income (loss) | $ (11,886,524) | $ (7,011,036) | $ 5,078,557
Adjustments to reconcile net income (loss) to net cash from (used) operating activities: |  |  |
Depreciation and amortization | 7,569,946 | 7,527,227 | 4,602,961
Net unrealized (gain) loss on investments | (10,806,320) | 10,521,166 | (2,343,359)
Realized gain (loss) on investments |  | (5,574,792) | 327,926
Accreted interest |  | 9,157 | 60,115
Bond amortization | (1,024) | (970) | (159)
Deferred taxes | 8,392,030 | (1,873,367) | 7,347,171
Provision for credit losses | 571,682 | 626,940 | 322,991
Share-based compensation |  |  | 10,125,813
Net realizable value inventory adjustment |  | 175,355 |
Other income - TIA | (5,900,985) | (6,223,891) | (3,832,747)
(Increase) decrease in operating assets: |  |  |
Accounts receivable | 2,313,342 | (6,463,542) | 29,701,396
Inventories | (1,608,385) | 2,927,445 | (94,249)
Other current assets | 199,606 | 313,848 | (564,496)
Income taxes receivable | 176,226 | 9,464,758 | (10,619,886)
Other assets | 48,439 | 32,460 | (178,850)
Increase (decrease) in operating liabilities: |  |  |
Accounts payable | (488,447) | (1,625,890) | (13,999,647)
Accrued liabilities | (136,262) | 807 | (4,269,163)
Income taxes payable | (360) | (58,827) | (4,896,246)
Net cash from (used) operating activities | (11,557,036) | 2,766,848 | 16,768,128
Cash flows from investing activities |  |  |
Purchase of property, plant, and equipment | (1,439,943) | (852,979) | (16,830,077)
Purchase of debt and equity securities | (899,750) | (68,481,490) | (18,135,191)
Proceeds from the sales of debt and equity securities | 6,000,000 | 58,572,186 | 3,762,454
Net cash from (used) investing activities | 3,660,307 | (10,762,283) | (31,202,814)
Cash flows from financing activities |  |  |
Repayments of long-term debt | (304,988) | (281,866) | (283,933)
Proceeds from Technology Investment Agreement (TIA) |  | 2,563,229 | 14,235,417
Proceeds from the exercise of stock options |  |  | 13,800
Payment of preferred stock repurchase payable |  | (1,101,110) | (1,101,110)
Payment of preferred stock dividends | (230,445) | (232,445) | (252,879)
Redemption of preferred stock |  | (6,168) |
Repurchase of common stock |  |  | (7,618,177)
Net cash from (used) financing activities | (535,433) | 941,640 | 4,993,118
Net decrease in cash and cash equivalents | (8,432,162) | (7,053,795) | (9,441,568)
Cash and cash equivalents at: |  |  |
Beginning of period | 12,667,550 | 19,721,345 | 29,162,913
End of period | 4,235,388 | 12,667,550 | 19,721,345
Supplemental schedule of cash flow information: |  |  |
Interest paid | 122,500 | 161,322 | 110,537
Income taxes paid (received) |  | (9,747,329) | 12,323,857
Supplemental schedule of noncash investing and financing activities: |  |  |
Preferred dividends declared, not paid | 57,611 | 57,611 | 58,111
Amounts receivable under Technology Investment Agreement (TIA) |  |  | 2,025,413
Redemption price payable | $ 6,000 | $ 6,000 | 6,000
Preferred stock repurchase payable |  |  | $ 1,091,953

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