Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 56,515	$ 77,605
Prepaid expenses and other assets	4,438	2,866
Total current assets	60,953	80,471
Property and equipment, net	7,550	6,764
Right of use assets – operating leases	5,150	2,173
Deferred financing costs	142	146
Total assets	73,795	89,554
Current liabilities:
Accounts payable	2,166	3,933
Accrued expenses	4,729	7,662
Deferred revenue	1,189	1,413
Operating lease liabilities	2,474	1,391
Finance lease liabilities	1,390	544
Other current liabilities	1,193	965
Total current liabilities	13,141	15,908
Deferred revenue	45,000	45,000
Operating lease liabilities	2,759	860
Finance lease liabilities	869	328
Other long-term liabilities	1,131	926
Total liabilities	62,900	63,022
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock $0.001 par value, 5,000,000 shares authorized, none issued or outstanding	0	0
Common stock $0.001 par value, 350,000,000 shares authorized, 41,542,744 and 40,609,915 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	41	40
Additional paid-in capital	274,934	271,594
Accumulated deficit	(264,080)	(245,102)
Total stockholders’ equity	10,895	26,532
Total liabilities and stockholders’ equity	$ 73,795	$ 89,554