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v3.21.1

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) | Common Stock Outstanding [Member] | Additional Paid in Capital [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income [Member] | Accumulated Deficit [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2019 | $ 232,562 | $ 304,885,663 | $ (85,188) | $ 42,778 | $ (290,516,780) | $ 14,559,035
Balance, shares at Dec. 31, 2019 | 23,255,818 |  | 334 |  |  |
Net loss |  |  |  |  | (5,056,878) | (5,056,878)
Sale of equity through equity financing facilities net of fees | $ 55,713 | 5,739,034 |  |  |  | 5,794,747
Sale of equity through equity financing facilities net of fees, shares | 5,571,428 |  |  |  |  |
Realized and unrealized gains and losses, net, on investment securities |  |  |  | (38,965) |  | (38,965)
Stock-based compensation expense |  | 451,965 |  |  |  | 451,965
Issuance of restricted stock | $ 4,299 | 494,333 |  |  |  | 498,632
Issuance of restricted stock, shares | 429,855 |  |  |  |  |
Balance at Mar. 31, 2020 | $ 292,574 | 311,570,995 | $ (85,188) | 3,813 | (295,573,658) | 16,208,536
Balance, shares at Mar. 31, 2020 | 29,257,101 |  | 334 |  |  |
Balance at Dec. 31, 2019 | $ 232,562 | 304,885,663 | $ (85,188) | 42,778 | (290,516,780) | 14,559,035
Balance, shares at Dec. 31, 2019 | 23,255,818 |  | 334 |  |  |
Balance at Dec. 31, 2020 | $ 407,014 | 330,289,596 | $ (85,188) |  | (312,000,341) | 18,611,081
Balance, shares at Dec. 31, 2020 | 40,701,022 |  | 334 |  |  |
Net loss |  |  |  |  | (5,689,003) | (5,689,003)
Sale of equity through equity financing facilities net of fees | $ 330,941 | 38,612,537 |  |  |  | 38,943,478
Sale of equity through equity financing facilities net of fees, shares | 33,094,085 |  |  |  |  |
Shares issued upon exercise of common stock warrants, net of fees | $ 12,166 | 1,496,500 |  |  |  | 1,508,666
Shares issued upon exercise of common stock warrants, net of fees, shares | 1,216,667 |  |  |  |  |
Shares issued upon exercise of options to purchase common stock | $ 75 | 4,650 |  |  |  | 4,725
Shares issued upon exercise of options to purchase common stock, shares | 7,500 |  |  |  |  |
Realized and unrealized gains and losses, net, on investment securities |  |  |  | 1,785 |  | 1,785
Stock-based compensation expense |  | 1,579,326 |  |  |  | 1,579,326
Balance at Mar. 31, 2021 | $ 750,196 | $ 371,982,609 | $ (85,188) | $ 1,785 | $ (317,689,344) | $ 54,960,058
Balance, shares at Mar. 31, 2021 | 75,019,274 |  | 334 |  |  |

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