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v3.3.1.900

Statements of Stockholders' Equity - USD ($) | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Total
--- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2013 | $ 4,867 | $ 61,251,183 | $ (61,122,674) | $ 133,376
Beginning Balance (in shares) at Dec. 31, 2013 | 4,867,063 |  |  |
Issuance of common stock | $ 10 | 12,490 |  | 12,500
Issuance of common stock (in shares) | 10,000 |  |  |
Exercise of warrants | $ 458 | 137,042 |  | 137,500
Exercise of warrants (in shares) | 457,813 |  |  |
Exercise of stock options | $ 69 | 47,102 |  | $ 47,171
Exercise of stock options (in shares) | 68,975 |  |  | (31,475)
Stock-based compensation |  | 204,678 |  | $ 204,678
Loss on extinguishment of debt |  | 61,500 |  | 61,500
Net income |  |  | 432,117 | 432,117
Ending Balance at Dec. 31, 2014 | $ 5,404 | 61,713,995 | (60,690,557) | 1,028,842
Ending Balance (in shares) at Dec. 31, 2014 | 5,403,851 |  |  |
Exercise of warrants | $ 125 | 131,125 |  | 131,250
Exercise of warrants (in shares) | 125,271 |  |  |
Exercise of stock options | $ 91 | 155,858 |  | $ 155,949
Exercise of stock options (in shares) | 91,333 |  |  | (91,333)
Stock-based compensation |  | 209,864 |  | $ 209,864
Loss on extinguishment of debt |  |  |  |
Net income |  |  | 1,817,672 | $ 1,817,672
Ending Balance at Dec. 31, 2015 | $ 5,620 | $ 62,210,842 | $ (58,872,885) | $ 3,343,577
Ending Balance (in shares) at Dec. 31, 2015 | 5,620,455 |  |  |

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