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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
ASSETS    
Cash and cash equivalents $ 23,849,860 $ 27,612,732
Prepaid expenses 2,138,971 1,325,998
Total current assets 25,988,831 28,938,730
Property and equipment, net 217,593 234,912
Other assets 1,197,788 2,174,286
Total assets 27,404,212 31,347,928
Current liabilities:    
Accounts payable 1,287,995 1,747,682
Accrued expenses 3,251,060 3,000,212
Total current liabilities 4,539,055 4,747,894
Stockholders’ equity:    
Authorized shares – 600,000,000 Issued and outstanding shares – 26,443,649 and 26,334,953 at March 31, 2023 and December 31, 2022, respectively 26,444 26,335
Additional paid-in capital 105,273,652 104,970,722
Accumulated deficit (82,434,939) (78,397,023)
Total stockholders’ equity 22,865,157 26,600,034
Total liabilities and stockholders’ equity $ 27,404,212 $ 31,347,928