Consolidated Balance Sheets - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 104,790,989	$ 52,858,311
Cash equivalent - reverse repurchase agreements	125,000,000	25,000,000
Marketable securities	0	0
Prepaid expenses and other current assets	2,961,781	5,200,957
Total current assets	232,752,770	83,059,268
Fixed assets, net	32,487	59,925
Right of use assets	351,863	233,310
Total assets	233,137,120	83,352,503
Current liabilities:
Accounts payable	1,019,702	381,638
Accrued expenses	10,523,353	8,134,765
Current portion of long-term debt	0	3,659,776
Current portion of operating lease liabilities	229,607	233,310
Total current liabilities	11,772,662	12,409,489
Operating lease liabilities, long-term	125,232	0
Long-term debt, net of current portion	15,503,703	11,434,456
Total liabilities	27,401,597	23,843,945
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock, $0.001 par value, 15,000,000 shares authorized, none issued and outstanding
Common stock, voting, $0.001 par value; 150,000,000 authorized and 58,081,215 and 38,667,491 shares issued and outstanding, respectively	58,081	38,667
Additional paid-in capital	500,369,444	296,385,619
Accumulated other comprehensive income	0	0
Accumulated deficit	(294,692,002)	(236,915,728)
Total stockholders’ equity	205,735,523	59,508,558
Total liabilities and stockholders’ equity	$ 233,137,120	$ 83,352,503