Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Current assets:    
Cash $ 9,281,554 $ 11,527,552
Prepaid expenses and other 917,826 841,958
Total current assets 10,199,380 12,369,510
Other assets 715,898 809,985
Total assets 10,915,278 13,179,495
Current liabilities:    
Accounts payable 305,088 327,396
Accrued expenses and other current liabilities 653,126 609,532
Total current liabilities 958,214 936,928
Other long-term liabilities 7,957 27,043
Total liabilities 966,171 963,971
Stockholders' equity:    
Common stock, $0.001 par value; 50,000,000 shares authorized as of June 30, 2021 and December 31, 2020; 8,773,683 and 8,772,198 shares issued as of June 30, 2021 and December 31, 2020, respectively; 8,746,692 and 8,745,207 shares outstanding as of June 30, 2021 and December 31, 2020, respectively 8,772 8,771
Additional paid in capital 194,319,716 194,133,511
Accumulated deficit (179,354,709) (176,902,086)
Accumulated other comprehensive income 253,734 253,734
Treasury stock (5,281,180) (5,281,180)
Total stockholders' equity 9,949,107 12,215,524
Total liabilities and stockholders' equity 10,915,278 13,179,495
Series B Preferred Stock [Member]    
Stockholders' equity:    
Preferred Stock, Value, Issued 1,804 1,804
Series A Preferred Stock [Member]    
Stockholders' equity:    
Preferred Stock, Value, Issued $ 970 $ 970