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v3.20.1

Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash Flows From Operating Activities: |  |  |
Net loss |  | $ (21,156,758) | $ (17,253,108)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation |  | 15,343 | 19,129
Stock-based compensation |  | 2,511,944 | 1,615,470
Changes in operating assets and liabilities: |  |  |
Prepaid expenses and other current assets |  | (63,924) | (95,607)
Accounts payable |  | 31,834 | 1,263,140
Accrued compensation |  | 4,769 | 912,104
Accrued expenses and other current liabilities |  | (266,283) | 503,950
Security deposit |  | 0 | (117,800)
Deferred rent |  | 3,767 | 41,584
Net Cash Used In Operating Activities |  | (18,919,308) | (13,111,138)
Cash Flows From Investing Activities: |  |  |
Purchases of property and equipment |  | (166,643) | (27,907)
Net Cash Used In Investing Activities |  | (166,643) | (27,907)
Cash Flows From Financing Activities: |  |  |
Proceeds from sale of common stock in initial public offering | [1] | 0 | 25,089,000
Payment of initial public offering issuance costs |  | 0 | (345,497)
Proceeds from sale of common stock in follow-on public offering | [2] | 0 | 3,084,330
Payment of follow-on public offering issuance costs |  | 0 | (266,581)
Proceeds from sale of common stock in public offering | [3] | 13,214,949 | 0
Payment of public offering issuance costs |  | (256,374) | 0
Proceeds from exercise of stock options |  | 551,777 | 56,482
Net Cash Provided By Financing Activities |  | 13,510,352 | 27,617,734
Net (Decrease) Increase in Cash and Cash Equivalents |  | (5,575,599) | 14,478,689
Cash and Cash Equivalents - Beginning of Year |  | 19,728,200 | 5,249,511
Cash and Cash Equivalents - End of Year |  | 14,152,601 | 19,728,200
Supplemental Disclosure of Non-Cash Investing and Financing Activities |  |  |
Accrued purchases of leasehold improvements |  | 42,500 | 0
Exercise of warrants on a cashless basis |  | 0 | 6
Exercise of stock options on a cashless basis |  | 24 | 0
Conversion of convertible preferred stock into common stock |  | 0 | 470
Reversal of previously accrued initial public offering issuance costs |  | 0 | (133,000)
Reclassification to additional paid-in capital for initial public offering issuance costs that were previously paid |  | $ 0 | $ (195,700)
[1] | [1] Includes gross proceeds of $27,300,000, less issuance costs of $2,211,000 deducted directly from the offering proceeds.
[2] | [2] Includes gross proceeds of $3,381,000, less issuance costs of $296,670 deducted directly from the offering proceeds.
[3] | [3] Includes gross proceeds of $14,030,001, less total issuance costs of $815,052 deducted directly from the offering proceeds.

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