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v3.20.2

CONDENSED STATEMENTS OF CASH FLOWS - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
Operating activities |  |
Net loss | $ (12,709,625) | $ (12,171,623)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Impairment loss | 34,169 | 0
Depreciation | 348,748 | 372,828
Stock-based compensation expense | 820,969 | 615,226
Change in fair value of derivative financial instruments—warrants | 186,072 | (27,359)
Release of clinical trial funding commitment | 868,093 | 509,034
Changes in operating assets and liabilities: |  |
Other assets | 1,806 | (68,145)
Accounts receivable and unbilled receivable | (886) | 15,717
Prepaid expenses | (623,902) | 277,876
Operating lease right-of-use assets | 240,086 | 224,400
Accounts payable and accrued expenses | 318,991 | 837,551
Operating lease liabilities | (635,630) | (576,141)
Other liabilities | (39,916) | 0
Net cash used in operating activities | (11,191,025) | (9,990,636)
Investing activities: |  |
Capital expenditures | (153,784) | (67,622)
Net cash used in investing activities | (153,784) | (67,622)
Financing activities: |  |
Proceeds from sales of common stock, preferred stock and warrants, net of expenses of $633,807 and $97,260, respectively | 18,278,429 | 4,386,321
Costs related to the clinical trial funding commitment | (7,500) | (40,000)
Proceeds from exercise of options | 6,832 | 0
Proceeds from exercise of warrants | 18,972,188 | 3,291,010
Borrowings under note payable | 305,000 | 0
Net cash provided by financing activities | 37,554,949 | 7,637,331
Net change in cash and cash equivalents | 26,210,140 | (2,420,927)
Cash and cash equivalents—Beginning of period | 10,195,292 | 11,453,133
Cash and cash equivalents—End of period | 36,405,432 | 9,032,206
Supplementary disclosure of cash flow activity: |  |
Cash paid for taxes | 800 | 800
Supplemental disclosure of non-cash investing and financing activities: |  |
Preferred stock dividend payable on Series A Convertible Preferred Stock | 18,180 | 18,180
Series C Convertible Preferred Stock |  |
Supplemental disclosure of non-cash investing and financing activities: |  |
Deemed dividend recognized for beneficial conversion features of Convertible Preferred Stock issuance | 0 | 268,269
Common stock, preferred stock and warrants issued in connection with clinical trial funding commitment | 0 | 1,675,000
Common stock issued upon conversion of convertible preferred stock | 0 | 33
Series D Convertible Preferred Stock |  |
Supplemental disclosure of non-cash investing and financing activities: |  |
Deemed dividend recognized for beneficial conversion features of Convertible Preferred Stock issuance | 601,767 | 0
Common stock, preferred stock and warrants issued in connection with clinical trial funding commitment | 2,300,000 | 0
Common stock issued upon conversion of convertible preferred stock | 155 | 0
Series E Convertible Preferred Stock |  |
Supplemental disclosure of non-cash investing and financing activities: |  |
Deemed dividend recognized for beneficial conversion features of Convertible Preferred Stock issuance | $ 2,664,717 | $ 0

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