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STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Total
--- | --- | --- | --- | ---
BALANCE at Sep. 30, 2016 | $ 62,480 | $ 284,649,429 | $ (285,391,122) | $ (679,213)
BALANCE, Shares at Sep. 30, 2016 | 6,248,035 |  |  |
Sale of common stock | $ 47,389 | 10,482,917 |  | 10,530,306
Sale of common stock, Shares | 4,738,920 |  |  |
Issuance of warrants in connection with sale of common stock |  | (4,665,683) |  | (4,665,683)
Warrants issued with notes payable |  | 1,108,867 |  | 1,108,867
Beneficial conversion feature on notes payable |  | 1,108,867 |  | 1,108,867
401(k) contributions paid in common stock | $ 799 | 150,509 |  | 151,308
401(k) contributions paid in common stock, Shares | 79,941 |  |  |
Conversion of notes payable to common stock | $ 2,667 | 448,033 |  | 450,700
Conversion of notes payable to common stock, Shares | 266,686 |  |  |
Stock issued to nonemployees for service | $ 766 | 203,817 |  | 204,583
Stock issued to nonemployees for service, Shares | 76,551 |  |  |
Shares issued for settlement of clinical research costs | $ 4,800 | 1,305,600 |  | 1,310,400
Shares issued for settlement of clinical research costs, shares | 480,000 |  |  |
Equity based compensation - employees | $ 130 | 1,481,120 |  | 1,481,250
Equity based compensation - employees, Shares | 13,000 |  |  |
Equity based compensation - non-employees |  | 24,925 |  | 24,925
Net loss |  |  | (14,363,287) | (14,363,287)
BALANCE at Sep. 30, 2017 | $ 119,031 | 296,298,401 | (299,754,409) | (3,336,977)
BALANCE, Shares at Sep. 30, 2017 | 11,903,133 |  |  |
Sale of common stock | $ 76,906 | 11,508,752 |  | 11,585,658
Sale of common stock, Shares | 7,690,623 |  |  |
Warrant exercises | $ 40,721 | 10,752,142 |  | 10,792,863
Warrant exercises, shares | 4,072,109 |  |  |
Warrants issued with notes payable |  | 947,616 |  | 947,616
401(k) contributions paid in common stock | $ 937 | 144,153 |  | 145,090
401(k) contributions paid in common stock, Shares | 93,640 |  |  |
Conversion of notes payable to common stock | $ 11,950 | 2,363,066 |  | 2,375,016
Conversion of notes payable to common stock, Shares | 1,194,930 |  |  |
Stock issued to nonemployees for service | $ 3,562 | 689,626 |  | 693,188
Stock issued to nonemployees for service, Shares | 356,197 |  |  |
Shares issued for settlement of clinical research costs | $ 22,600 | 5,484,800 |  | 5,507,400
Shares issued for settlement of clinical research costs, shares | 2,260,000 |  |  |
Equity based compensation - employees |  | 2,743,267 |  | 2,743,267
Employee stock purchases | $ 4,639 | 380,361 |  | 385,000
Employee stock purchases, shares | 463,855 |  |  |
Net loss |  |  | (31,837,205) | (31,837,205)
BALANCE at Sep. 30, 2018 | $ 280,346 | $ 331,312,184 | $ (331,591,614) | $ 916
BALANCE, Shares at Sep. 30, 2018 | 28,034,487 |  |  |

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