Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 6,043,980	$ 6,205,926
Marketable investment securities	11,891,702	15,427,385
Accrued interest income	121,732	120,447
Prepaid and other current assets	362,629	567,915
Total current assets	18,420,043	22,321,673
Property and equipment, net of accumulated depreciation of $1,254,975 and $1,223,297 respectively	133,397	165,075
Other assets	23,753	23,753
Total assets	18,577,193	22,510,501
Current liabilities:
Accounts payable	442,994	271,696
Accrued expenses	685,779	921,240
Deferred revenue	320,000	320,000
Total current liabilities	1,448,773	1,512,936
Total liabilities	1,448,773	1,512,936
Commitments and contingencies (notes 8 and 11)
Stockholders’ equity:
Common stock, par value $0.0001 per share, 75,000,000 shares authorized; 5,374,431 and 5,348,276 issued and 5,374,095 and 5,347,940 outstanding, respectively	8,865	8,863
Additional paid-in capital	221,000,961	220,789,138
Treasury stock at cost, 336 shares	(40,712)	(40,712)
Accumulated other comprehensive income	(1,243)	9,138
Accumulated deficit	(203,839,451)	(199,768,862)
Total stockholders’ equity	17,128,420	20,997,565
Total liabilities and stockholders’ equity	$ 18,577,193	$ 22,510,501

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).