CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 29,586	$ 23,767
Short-term investments	67,968	0
Restricted cash	62	62
Prepaid materials, net	3,010	3,010
Prepaid expenses and other current assets	821	1,340
Total current assets	101,447	28,179
Long-term investments	10,171	0
Property and equipment, net	1,086	1,061
Intangibles, net	30	33
Right of use asset	1,330	1,477
Other assets	74	0
Total assets	114,138	30,750
Current liabilities:
Accounts payable	406	204
Accrued liabilities	604	691
Accrued research and development expenses	700	921
Accrued compensation	1,185	2,979
Term loan, less debt issuance costs	540	1,334
Other current liabilities	2,247	2,379
Total current liabilities	5,682	8,508
Lease liability, less current portion	868	1,055
Total liabilities	6,550	9,563
Commitments and Contingencies
Stockholders’ equity:
Common stock, $0.001 par value; 300,000,000 shares authorized at March 31, 2024 and December 31, 2023; 65,465,251 and 20,222,672 shares issued and outstanding at March 31, 2024 (unaudited) and December 31, 2023, respectively	65	20
Additional paid-in capital	629,245	534,375
Accumulated other comprehensive loss	(45)	0
Accumulated deficit	(521,682)	(513,213)
Total stockholders’ equity	107,588	21,187
Total liabilities and stockholders’ equity	114,138	30,750
Class A-1 Convertible Preferred Stock
Stockholders’ equity:
Convertible preferred stock	0	0
Class A-2 Convertible Preferred Stock
Stockholders’ equity:
Convertible preferred stock	1	1
Class A-3 Convertible Preferred Stock
Stockholders’ equity:
Convertible preferred stock	0	0
Class A-4 Convertible Preferred Stock
Stockholders’ equity:
Convertible preferred stock	4	4
Class A-5 Convertible Preferred Stock
Stockholders’ equity:
Convertible preferred stock	0	0
Class A-6 Convertible Preferred Stock
Stockholders’ equity:
Convertible preferred stock	$ 0	$ 0