v3.20.2
Balance Sheets - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 17,303,234 $ 21,684,089
At-the-market ("ATM") funds receivable 3,165,868  
Accounts receivable 26,350 63,144
Prepaid expenses and other current assets 781,598 450,231
Total current assets 21,277,050 22,197,464
Property and equipment, net 346,836 626,524
Operating lease right-of-use assets 1,487,116 2,057,576
Other assets 2,410 2,410
Total assets 23,113,412 24,883,974
Current liabilities:    
Accounts payable 1,045,466 1,671,519
Accrued expenses 1,403,601 2,063,097
Operating lease liabilities, current portion 845,108 722,291
Deferred revenue 12,000 12,000
Total current liabilities 3,306,175 4,468,907
Operating lease liabilities, long-term portion 765,209 1,402,193
Total liabilities 4,071,384 5,871,100
Commitments and contingencies
Stockholders’ equity:    
Preferred Stock, $0.00001 par value, 10,000,000 shares authorized at September 30, 2020 and December 31, 2019; no shares issued or outstanding
Common Stock, $0.00001 par value, 200,000,000 and 50,000,000 shares authorized at September 30, 2020 and December 31, 2019, respectively; 43,062,944 and 33,203,806 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively. 431 333
Additional paid-in capital 306,541,496 282,153,201
Accumulated deficit (287,499,899) (263,140,660)
Total stockholders’ equity 19,042,028 19,012,874
Total liabilities and stockholders’ equity $ 23,113,412 $ 24,883,974

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