Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 13,081,000	$ 21,338,000
Tax incentive and other receivables	1,323,000	1,765,000
Prepaid expenses and other assets	966,000	1,848,000
Total current assets	15,370,000	24,951,000
Property and equipment, net	8,000	10,000
Other assets	244,000	1,000
Total assets	15,622,000	24,962,000
Current liabilities:
Accounts payable	4,759,000	8,186,000
Accrued expenses and other liabilities	2,593,000	3,121,000
Deferred revenue		226,000
Total current liabilities	7,352,000	11,533,000
Deferred revenue, non-current		2,565,000
Warrant liabilities	8,000	42,494,000
Total liabilities	7,360,000	56,592,000
Commitments and contingencies (Note 5)
Stockholders' equity (deficit):
Series C Preferred stock, $0.01 par value, 5,000,000 shares authorized, 7,440 shares issued, 6,737 and 7,398 shares outstanding at June 30, 2025 and December 31, 2024, respectively
Common stock, $0.01 par value, 250,000,000 shares authorized, 7,069,148 and 3,650,731 shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively	71,000	36,000
Additional paid-in capital	636,761,000	617,530,000
Accumulated deficit	(628,579,000)	(649,154,000)
Accumulated other comprehensive income (loss)	9,000	(42,000)
Total stockholders' equity (deficit)	8,262,000	(31,630,000)
Total liabilities and stockholders' equity (deficit)	$ 15,622,000	$ 24,962,000

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).