Quarterly report pursuant to Section 13 or 15(d)

Balance Sheets

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Balance Sheets - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Current assets:    
Cash and cash equivalents $ 36,129,119 $ 20,106,485
Accounts receivable 66,650 44,550
Prepaid expenses and other current assets 490,295 637,708
Operating lease right-of-use assets 287,134  
Total current assets 36,973,198 20,788,743
Property and equipment, net 1,144,897 1,219,016
Other assets 2,410 2,410
Total assets 38,120,505 22,010,169
Current liabilities:    
Accounts payable 1,855,306 1,861,385
Accrued expenses 1,858,519 1,778,349
Operating lease liabilities 331,261  
Total current liabilities 4,045,086 3,639,734
Commitments and contingencies
Stockholders’ equity:    
Preferred Stock, $0.00001 par value, 10,000,000 shares authorized at March 31, 2019 and December 31, 2018; no shares issued or outstanding
Common Stock, $0.00001 par value, 50,000,000 shares authorized at March 31, 2019 and December 31, 2018; 30,328,549 and 26,526,303 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively. 303 265
Additional paid-in capital 269,836,155 243,111,741
Accumulated deficit (235,761,039) (224,741,571)
Total stockholders’ equity 34,075,419 18,370,435
Total liabilities and stockholders’ equity $ 38,120,505 $ 22,010,169