Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Operating activities
Net loss	$ (25,020)	$ (25,028)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	851	860
Stock-based compensation expense	1,863	1,642
Non-cash lease expense	954	835
Non-cash interest expense	16	49
Change in operating assets and liabilities:
Prepaid expenses and other current assets	310	(546)
Accounts payable	(15)	(59)
Accrued expenses and other liabilities	(1,755)	(1,027)
Deferred revenue	(385)	0
Operating lease assets and liabilities	(1,448)	(1,307)
Net cash used in operating activities	(24,629)	(24,581)
Investing activities
Purchases of property and equipment	(279)	(178)
Net cash used in investing activities	(279)	(178)
Financing activities
Proceeds from issuance of common stock	0	2
Principal payments on financing obligation	0	(230)
Principal payments on finance leases	(79)	(178)
Payments of deferred offering costs	0	(608)
Net cash used in financing activities	(79)	(1,014)
Net decrease in cash, cash equivalents and restricted cash	(24,987)	(25,773)
Cash, cash equivalents and restricted cash – beginning of year	65,663	40,004
Cash, cash equivalents and restricted cash – end of period	40,676	14,231
Supplemental disclosures of cash flow information:
Deferred offering costs in accounts payable and accrued expenses	0	1,147
Finance lease right-of-use asset converted to fixed asset	$ 290	$ 0