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STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($) | Preferred Stock | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Treasury Stock | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2018 | $ 2,830,000 | $ 1,505 | $ 27,416,802 | $ (30,269,833) | $ (149,459) | $ (170,985)
Balance, shares at Dec. 31, 2018 | 2,830 | 1,505,883 |  |  |  |
Commons stock issued for warrants exercised |  | $ 214 | 1,649,786 |  |  | 1,650,000
Commons stock issued for warrants exercised, shares |  | 214,286 |  |  |  |
Stock options granted to employees |  |  | 21,892 |  |  | 21,892
Net Income (Loss) |  |  |  | 44,169 |  | 44,169
Balance at Mar. 31, 2019 | $ 2,830,000 | $ 1,719 | 29,088,480 | (30,225,664) | (149,459) | 1,545,076
Balance, shares at Mar. 31, 2019 | 2,830 | 1,720,169 |  |  |  |
Balance at Dec. 31, 2018 | $ 2,830,000 | $ 1,505 | 27,416,802 | (30,269,833) | (149,459) | (170,985)
Balance, shares at Dec. 31, 2018 | 2,830 | 1,505,883 |  |  |  |
Net Income (Loss) |  |  |  |  |  | (1,905,622)
Balance at Jun. 30, 2019 | $ 2,830 | $ 1,796 | 29,598,664 | (32,175,455) | (150,610) | 104,395
Balance, shares at Jun. 30, 2019 | 2,830,000 | 1,796,803 |  |  |  |
Balance at Dec. 31, 2018 | $ 2,830,000 | $ 1,505 | 27,416,802 | (30,269,833) | (149,459) | (170,985)
Balance, shares at Dec. 31, 2018 | 2,830 | 1,505,883 |  |  |  |
Balance at Dec. 31, 2019 | $ 1,705,000 | $ 1,982 | 31,063,915 | (32,740,715) | (157,452) | (127,270)
Balance, shares at Dec. 31, 2019 | 1,705 | 1,982,039 |  |  |  |
Balance at Mar. 31, 2019 | $ 2,830,000 | $ 1,719 | 29,088,480 | (30,225,664) | (149,459) | 1,545,076
Balance, shares at Mar. 31, 2019 | 2,830 | 1,720,169 |  |  |  |
Commons stock issued for warrants exercised |  | $ 77 | 513,943 |  |  | 514,020
Commons stock issued for warrants exercised, shares |  | 76,634 |  |  |  |
Stock Repurchase |  |  |  |  | (1,151) | (1,151)
Stock options granted to employees |  |  | 6,241 |  |  | 6,241
Stock issuance costs |  |  | (10,000) |  |  | (10,000)
Net Income (Loss) |  |  |  | (1,949,791) |  | (1,949,791)
Balance at Jun. 30, 2019 | $ 2,830 | $ 1,796 | 29,598,664 | (32,175,455) | (150,610) | 104,395
Balance, shares at Jun. 30, 2019 | 2,830,000 | 1,796,803 |  |  |  |
Balance at Dec. 31, 2019 | $ 1,705,000 | $ 1,982 | 31,063,915 | (32,740,715) | (157,452) | (127,270)
Balance, shares at Dec. 31, 2019 | 1,705 | 1,982,039 |  |  |  |
Common stock issued |  | $ 1,542 | 9,251,586 |  |  | $ 9,253,128
Common stock issued, shares |  | 1,542,188 |  |  |  | 1,542,188
Stock options granted to employees |  |  | 8,100 |  |  | $ 8,100
Stock issuance costs |  |  | (1,001,885) |  |  | (1,001,885)
Common stock issued for services |  | $ 2 | 7,498 |  |  | 7,500
Common stock issued for services, shares |  | 1,611 |  |  |  |
Net Income (Loss) |  |  |  | (2,147,049) |  | (2,147,049)
Balance at Mar. 31, 2020 | $ 1,705,000 | $ 3,526 | 39,329,214 | (34,887,764) | (157,452) | 5,992,524
Balance, shares at Mar. 31, 2020 | 1,705 | 3,525,838 |  |  |  |
Balance at Dec. 31, 2019 | $ 1,705,000 | $ 1,982 | 31,063,915 | (32,740,715) | (157,452) | (127,270)
Balance, shares at Dec. 31, 2019 | 1,705 | 1,982,039 |  |  |  |
Common stock issued |  |  |  |  |  | $ 9,250,000
Common stock issued, shares |  |  |  |  |  | 1,542,188
Stock options cancelled and replaced to employees |  |  |  |  |  | 102,800
Net Income (Loss) |  |  |  |  |  | $ (3,612,938)
Balance at Jun. 30, 2020 | $ 1,705 | $ 3,528 | 39,527,682 | (36,353,653) | (157,452) | 4,725,105
Balance, shares at Jun. 30, 2020 | 1,705,000 | 3,527,470 |  |  |  |
Balance at Mar. 31, 2020 | $ 1,705,000 | $ 3,526 | 39,329,214 | (34,887,764) | (157,452) | 5,992,524
Balance, shares at Mar. 31, 2020 | 1,705 | 3,525,838 |  |  |  |
Modification of employee stock options |  |  | 102,800 |  |  | 102,800
Stock options granted to employees |  |  | 88,170 |  |  | 88,170
Common stock issued for services |  | $ 2 | 7,498 |  |  | 7,500
Common stock issued for services, shares |  | 1,632 |  |  |  |
Net Income (Loss) |  |  |  | (1,465,889) |  | (1,465,889)
Balance at Jun. 30, 2020 | $ 1,705 | $ 3,528 | $ 39,527,682 | $ (36,353,653) | $ (157,452) | $ 4,725,105
Balance, shares at Jun. 30, 2020 | 1,705,000 | 3,527,470 |  |  |  |

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