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Condensed Statements of Cash Flows - USD ($)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Cash flows from operating activities:    
Net loss $ (16,647,765) $ (24,261,685)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 1,758,315 1,951,317
Depreciation 53,058 40,573
Fair value of shares issued for commitment fee 355,555  
Loss on disposal of property and equipment   57,578
Non-cash interest expense 2,297  
Changes in operating assets and liabilities    
Prepaid expenses and other current assets (39,043) 102,957
Accounts payable 353,114 (1,004,260)
Accrued expenses and other current liabilities 1,016,936 (2,391,433)
Other non-current assets   (10,620)
Net cash used in operating activities (13,147,533) (25,515,573)
Cash flows from investing activities:    
Purchase of property and equipment (2,229) (126,080)
Net cash used in investing activities (2,229) (126,080)
Cash flows from financing activities:    
Proceeds from issuance of common stock, net of issuance costs 6,667,091  
Proceeds from Paycheck Protection Program loan 562,479  
Proceeds from the exercise of stock options   92,272
Net cash provided by financing activities 7,229,570 92,272
Net decrease in cash and cash equivalents (5,920,192) (25,549,381)
Cash and cash equivalents, beginning of period 12,077,640 41,671,284
Cash and cash equivalents, end of period $ 6,157,448 $ 16,121,903